The Tor Browser: browser/devtools/webaudioeditor/lib/d3.js@6474c204b198 (annotated)

browser/devtools/webaudioeditor/lib/d3.js@6474c204b198 (annotated)

browser/devtools/webaudioeditor/lib/d3.js

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 !function() {
   var d3 = {
     version: "3.4.2"
   };
   if (!Date.now) Date.now = function() {
     return +new Date();
   };
   var d3_arraySlice = [].slice, d3_array = function(list) {
     return d3_arraySlice.call(list);
   };
   var d3_document = document, d3_documentElement = d3_document.documentElement, d3_window = window;
   try {
     d3_array(d3_documentElement.childNodes)[0].nodeType;
   } catch (e) {
     d3_array = function(list) {
       var i = list.length, array = new Array(i);
       while (i--) array[i] = list[i];
       return array;
     };
   }
   try {
     d3_document.createElement("div").style.setProperty("opacity", 0, "");
   } catch (error) {
     var d3_element_prototype = d3_window.Element.prototype, d3_element_setAttribute = d3_element_prototype.setAttribute, d3_element_setAttributeNS = d3_element_prototype.setAttributeNS, d3_style_prototype = d3_window.CSSStyleDeclaration.prototype, d3_style_setProperty = d3_style_prototype.setProperty;
     d3_element_prototype.setAttribute = function(name, value) {
       d3_element_setAttribute.call(this, name, value + "");
     };
     d3_element_prototype.setAttributeNS = function(space, local, value) {
       d3_element_setAttributeNS.call(this, space, local, value + "");
     };
     d3_style_prototype.setProperty = function(name, value, priority) {
       d3_style_setProperty.call(this, name, value + "", priority);
     };
   }
   d3.ascending = function(a, b) {
     return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
   };
   d3.descending = function(a, b) {
     return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
   };
   d3.min = function(array, f) {
     var i = -1, n = array.length, a, b;
     if (arguments.length === 1) {
       while (++i < n && !((a = array[i]) != null && a <= a)) a = undefined;
       while (++i < n) if ((b = array[i]) != null && a > b) a = b;
     } else {
       while (++i < n && !((a = f.call(array, array[i], i)) != null && a <= a)) a = undefined;
       while (++i < n) if ((b = f.call(array, array[i], i)) != null && a > b) a = b;
     }
     return a;
   };
   d3.max = function(array, f) {
     var i = -1, n = array.length, a, b;
     if (arguments.length === 1) {
       while (++i < n && !((a = array[i]) != null && a <= a)) a = undefined;
       while (++i < n) if ((b = array[i]) != null && b > a) a = b;
     } else {
       while (++i < n && !((a = f.call(array, array[i], i)) != null && a <= a)) a = undefined;
       while (++i < n) if ((b = f.call(array, array[i], i)) != null && b > a) a = b;
     }
     return a;
   };
   d3.extent = function(array, f) {
     var i = -1, n = array.length, a, b, c;
     if (arguments.length === 1) {
       while (++i < n && !((a = c = array[i]) != null && a <= a)) a = c = undefined;
       while (++i < n) if ((b = array[i]) != null) {
         if (a > b) a = b;
         if (c < b) c = b;
       }
     } else {
       while (++i < n && !((a = c = f.call(array, array[i], i)) != null && a <= a)) a = undefined;
       while (++i < n) if ((b = f.call(array, array[i], i)) != null) {
         if (a > b) a = b;
         if (c < b) c = b;
       }
     }
     return [ a, c ];
   };
   d3.sum = function(array, f) {
     var s = 0, n = array.length, a, i = -1;
     if (arguments.length === 1) {
       while (++i < n) if (!isNaN(a = +array[i])) s += a;
     } else {
       while (++i < n) if (!isNaN(a = +f.call(array, array[i], i))) s += a;
     }
     return s;
   };
   function d3_number(x) {
     return x != null && !isNaN(x);
   }
   d3.mean = function(array, f) {
     var n = array.length, a, m = 0, i = -1, j = 0;
     if (arguments.length === 1) {
       while (++i < n) if (d3_number(a = array[i])) m += (a - m) / ++j;
     } else {
       while (++i < n) if (d3_number(a = f.call(array, array[i], i))) m += (a - m) / ++j;
     }
     return j ? m : undefined;
   };
   d3.quantile = function(values, p) {
     var H = (values.length - 1) * p + 1, h = Math.floor(H), v = +values[h - 1], e = H - h;
     return e ? v + e * (values[h] - v) : v;
   };
   d3.median = function(array, f) {
     if (arguments.length > 1) array = array.map(f);
     array = array.filter(d3_number);
     return array.length ? d3.quantile(array.sort(d3.ascending), .5) : undefined;
   };
   d3.bisector = function(f) {
     return {
       left: function(a, x, lo, hi) {
         if (arguments.length < 3) lo = 0;
         if (arguments.length < 4) hi = a.length;
         while (lo < hi) {
           var mid = lo + hi >>> 1;
           if (f.call(a, a[mid], mid) < x) lo = mid + 1; else hi = mid;
         }
         return lo;
       },
       right: function(a, x, lo, hi) {
         if (arguments.length < 3) lo = 0;
         if (arguments.length < 4) hi = a.length;
         while (lo < hi) {
           var mid = lo + hi >>> 1;
           if (x < f.call(a, a[mid], mid)) hi = mid; else lo = mid + 1;
         }
         return lo;
       }
     };
   };
   var d3_bisector = d3.bisector(function(d) {
     return d;
   });
   d3.bisectLeft = d3_bisector.left;
   d3.bisect = d3.bisectRight = d3_bisector.right;
   d3.shuffle = function(array) {
     var m = array.length, t, i;
     while (m) {
       i = Math.random() * m-- | 0;
       t = array[m], array[m] = array[i], array[i] = t;
     }
     return array;
   };
   d3.permute = function(array, indexes) {
     var i = indexes.length, permutes = new Array(i);
     while (i--) permutes[i] = array[indexes[i]];
     return permutes;
   };
   d3.pairs = function(array) {
     var i = 0, n = array.length - 1, p0, p1 = array[0], pairs = new Array(n < 0 ? 0 : n);
     while (i < n) pairs[i] = [ p0 = p1, p1 = array[++i] ];
     return pairs;
   };
   d3.zip = function() {
     if (!(n = arguments.length)) return [];
     for (var i = -1, m = d3.min(arguments, d3_zipLength), zips = new Array(m); ++i < m; ) {
       for (var j = -1, n, zip = zips[i] = new Array(n); ++j < n; ) {
         zip[j] = arguments[j][i];
       }
     }
     return zips;
   };
   function d3_zipLength(d) {
     return d.length;
   }
   d3.transpose = function(matrix) {
     return d3.zip.apply(d3, matrix);
   };
   d3.keys = function(map) {
     var keys = [];
     for (var key in map) keys.push(key);
     return keys;
   };
   d3.values = function(map) {
     var values = [];
     for (var key in map) values.push(map[key]);
     return values;
   };
   d3.entries = function(map) {
     var entries = [];
     for (var key in map) entries.push({
       key: key,
       value: map[key]
     });
     return entries;
   };
   d3.merge = function(arrays) {
     var n = arrays.length, m, i = -1, j = 0, merged, array;
     while (++i < n) j += arrays[i].length;
     merged = new Array(j);
     while (--n >= 0) {
       array = arrays[n];
       m = array.length;
       while (--m >= 0) {
         merged[--j] = array[m];
       }
     }
     return merged;
   };
   var abs = Math.abs;
   d3.range = function(start, stop, step) {
     if (arguments.length < 3) {
       step = 1;
       if (arguments.length < 2) {
         stop = start;
         start = 0;
       }
     }
     if ((stop - start) / step === Infinity) throw new Error("infinite range");
     var range = [], k = d3_range_integerScale(abs(step)), i = -1, j;
     start *= k, stop *= k, step *= k;
     if (step < 0) while ((j = start + step * ++i) > stop) range.push(j / k); else while ((j = start + step * ++i) < stop) range.push(j / k);
     return range;
   };
   function d3_range_integerScale(x) {
     var k = 1;
     while (x * k % 1) k *= 10;
     return k;
   }
   function d3_class(ctor, properties) {
     try {
       for (var key in properties) {
         Object.defineProperty(ctor.prototype, key, {
           value: properties[key],
           enumerable: false
         });
       }
     } catch (e) {
       ctor.prototype = properties;
     }
   }
   d3.map = function(object) {
     var map = new d3_Map();
     if (object instanceof d3_Map) object.forEach(function(key, value) {
       map.set(key, value);
     }); else for (var key in object) map.set(key, object[key]);
     return map;
   };
   function d3_Map() {}
   d3_class(d3_Map, {
     has: d3_map_has,
     get: function(key) {
       return this[d3_map_prefix + key];
     },
     set: function(key, value) {
       return this[d3_map_prefix + key] = value;
     },
     remove: d3_map_remove,
     keys: d3_map_keys,
     values: function() {
       var values = [];
       this.forEach(function(key, value) {
         values.push(value);
       });
       return values;
     },
     entries: function() {
       var entries = [];
       this.forEach(function(key, value) {
         entries.push({
           key: key,
           value: value
         });
       });
       return entries;
     },
     size: d3_map_size,
     empty: d3_map_empty,
     forEach: function(f) {
       for (var key in this) if (key.charCodeAt(0) === d3_map_prefixCode) f.call(this, key.substring(1), this[key]);
     }
   });
   var d3_map_prefix = "\x00", d3_map_prefixCode = d3_map_prefix.charCodeAt(0);
   function d3_map_has(key) {
     return d3_map_prefix + key in this;
   }
   function d3_map_remove(key) {
     key = d3_map_prefix + key;
     return key in this && delete this[key];
   }
   function d3_map_keys() {
     var keys = [];
     this.forEach(function(key) {
       keys.push(key);
     });
     return keys;
   }
   function d3_map_size() {
     var size = 0;
     for (var key in this) if (key.charCodeAt(0) === d3_map_prefixCode) ++size;
     return size;
   }
   function d3_map_empty() {
     for (var key in this) if (key.charCodeAt(0) === d3_map_prefixCode) return false;
     return true;
   }
   d3.nest = function() {
     var nest = {}, keys = [], sortKeys = [], sortValues, rollup;
     function map(mapType, array, depth) {
       if (depth >= keys.length) return rollup ? rollup.call(nest, array) : sortValues ? array.sort(sortValues) : array;
       var i = -1, n = array.length, key = keys[depth++], keyValue, object, setter, valuesByKey = new d3_Map(), values;
       while (++i < n) {
         if (values = valuesByKey.get(keyValue = key(object = array[i]))) {
           values.push(object);
         } else {
           valuesByKey.set(keyValue, [ object ]);
         }
       }
       if (mapType) {
         object = mapType();
         setter = function(keyValue, values) {
           object.set(keyValue, map(mapType, values, depth));
         };
       } else {
         object = {};
         setter = function(keyValue, values) {
           object[keyValue] = map(mapType, values, depth);
         };
       }
       valuesByKey.forEach(setter);
       return object;
     }
     function entries(map, depth) {
       if (depth >= keys.length) return map;
       var array = [], sortKey = sortKeys[depth++];
       map.forEach(function(key, keyMap) {
         array.push({
           key: key,
           values: entries(keyMap, depth)
         });
       });
       return sortKey ? array.sort(function(a, b) {
         return sortKey(a.key, b.key);
       }) : array;
     }
     nest.map = function(array, mapType) {
       return map(mapType, array, 0);
     };
     nest.entries = function(array) {
       return entries(map(d3.map, array, 0), 0);
     };
     nest.key = function(d) {
       keys.push(d);
       return nest;
     };
     nest.sortKeys = function(order) {
       sortKeys[keys.length - 1] = order;
       return nest;
     };
     nest.sortValues = function(order) {
       sortValues = order;
       return nest;
     };
     nest.rollup = function(f) {
       rollup = f;
       return nest;
     };
     return nest;
   };
   d3.set = function(array) {
     var set = new d3_Set();
     if (array) for (var i = 0, n = array.length; i < n; ++i) set.add(array[i]);
     return set;
   };
   function d3_Set() {}
   d3_class(d3_Set, {
     has: d3_map_has,
     add: function(value) {
       this[d3_map_prefix + value] = true;
       return value;
     },
     remove: function(value) {
       value = d3_map_prefix + value;
       return value in this && delete this[value];
     },
     values: d3_map_keys,
     size: d3_map_size,
     empty: d3_map_empty,
     forEach: function(f) {
       for (var value in this) if (value.charCodeAt(0) === d3_map_prefixCode) f.call(this, value.substring(1));
     }
   });
   d3.behavior = {};
   d3.rebind = function(target, source) {
     var i = 1, n = arguments.length, method;
     while (++i < n) target[method = arguments[i]] = d3_rebind(target, source, source[method]);
     return target;
   };
   function d3_rebind(target, source, method) {
     return function() {
       var value = method.apply(source, arguments);
       return value === source ? target : value;
     };
   }
   function d3_vendorSymbol(object, name) {
     if (name in object) return name;
     name = name.charAt(0).toUpperCase() + name.substring(1);
     for (var i = 0, n = d3_vendorPrefixes.length; i < n; ++i) {
       var prefixName = d3_vendorPrefixes[i] + name;
       if (prefixName in object) return prefixName;
     }
   }
   var d3_vendorPrefixes = [ "webkit", "ms", "moz", "Moz", "o", "O" ];
   function d3_noop() {}
   d3.dispatch = function() {
     var dispatch = new d3_dispatch(), i = -1, n = arguments.length;
     while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
     return dispatch;
   };
   function d3_dispatch() {}
   d3_dispatch.prototype.on = function(type, listener) {
     var i = type.indexOf("."), name = "";
     if (i >= 0) {
       name = type.substring(i + 1);
       type = type.substring(0, i);
     }
     if (type) return arguments.length < 2 ? this[type].on(name) : this[type].on(name, listener);
     if (arguments.length === 2) {
       if (listener == null) for (type in this) {
         if (this.hasOwnProperty(type)) this[type].on(name, null);
       }
       return this;
     }
   };
   function d3_dispatch_event(dispatch) {
     var listeners = [], listenerByName = new d3_Map();
     function event() {
       var z = listeners, i = -1, n = z.length, l;
       while (++i < n) if (l = z[i].on) l.apply(this, arguments);
       return dispatch;
     }
     event.on = function(name, listener) {
       var l = listenerByName.get(name), i;
       if (arguments.length < 2) return l && l.on;
       if (l) {
         l.on = null;
         listeners = listeners.slice(0, i = listeners.indexOf(l)).concat(listeners.slice(i + 1));
         listenerByName.remove(name);
       }
       if (listener) listeners.push(listenerByName.set(name, {
         on: listener
       }));
       return dispatch;
     };
     return event;
   }
   d3.event = null;
   function d3_eventPreventDefault() {
     d3.event.preventDefault();
   }
   function d3_eventSource() {
     var e = d3.event, s;
     while (s = e.sourceEvent) e = s;
     return e;
   }
   function d3_eventDispatch(target) {
     var dispatch = new d3_dispatch(), i = 0, n = arguments.length;
     while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
     dispatch.of = function(thiz, argumentz) {
       return function(e1) {
         try {
           var e0 = e1.sourceEvent = d3.event;
           e1.target = target;
           d3.event = e1;
           dispatch[e1.type].apply(thiz, argumentz);
         } finally {
           d3.event = e0;
         }
       };
     };
     return dispatch;
   }
   d3.requote = function(s) {
     return s.replace(d3_requote_re, "\\$&");
   };
   var d3_requote_re = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g;
   var d3_subclass = {}.__proto__ ? function(object, prototype) {
     object.__proto__ = prototype;
   } : function(object, prototype) {
     for (var property in prototype) object[property] = prototype[property];
   };
   function d3_selection(groups) {
     d3_subclass(groups, d3_selectionPrototype);
     return groups;
   }
   var d3_select = function(s, n) {
     return n.querySelector(s);
   }, d3_selectAll = function(s, n) {
     return n.querySelectorAll(s);
   }, d3_selectMatcher = d3_documentElement[d3_vendorSymbol(d3_documentElement, "matchesSelector")], d3_selectMatches = function(n, s) {
     return d3_selectMatcher.call(n, s);
   };
   if (typeof Sizzle === "function") {
     d3_select = function(s, n) {
       return Sizzle(s, n)[0] || null;
     };
     d3_selectAll = function(s, n) {
       return Sizzle.uniqueSort(Sizzle(s, n));
     };
     d3_selectMatches = Sizzle.matchesSelector;
   }
   d3.selection = function() {
     return d3_selectionRoot;
   };
   var d3_selectionPrototype = d3.selection.prototype = [];
   d3_selectionPrototype.select = function(selector) {
     var subgroups = [], subgroup, subnode, group, node;
     selector = d3_selection_selector(selector);
     for (var j = -1, m = this.length; ++j < m; ) {
       subgroups.push(subgroup = []);
       subgroup.parentNode = (group = this[j]).parentNode;
       for (var i = -1, n = group.length; ++i < n; ) {
         if (node = group[i]) {
           subgroup.push(subnode = selector.call(node, node.__data__, i, j));
           if (subnode && "__data__" in node) subnode.__data__ = node.__data__;
         } else {
           subgroup.push(null);
         }
       }
     }
     return d3_selection(subgroups);
   };
   function d3_selection_selector(selector) {
     return typeof selector === "function" ? selector : function() {
       return d3_select(selector, this);
     };
   }
   d3_selectionPrototype.selectAll = function(selector) {
     var subgroups = [], subgroup, node;
     selector = d3_selection_selectorAll(selector);
     for (var j = -1, m = this.length; ++j < m; ) {
       for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
         if (node = group[i]) {
           subgroups.push(subgroup = d3_array(selector.call(node, node.__data__, i, j)));
           subgroup.parentNode = node;
         }
       }
     }
     return d3_selection(subgroups);
   };
   function d3_selection_selectorAll(selector) {
     return typeof selector === "function" ? selector : function() {
       return d3_selectAll(selector, this);
     };
   }
   var d3_nsPrefix = {
     svg: "http://www.w3.org/2000/svg",
     xhtml: "http://www.w3.org/1999/xhtml",
     xlink: "http://www.w3.org/1999/xlink",
     xml: "http://www.w3.org/XML/1998/namespace",
     xmlns: "http://www.w3.org/2000/xmlns/"
   };
   d3.ns = {
     prefix: d3_nsPrefix,
     qualify: function(name) {
       var i = name.indexOf(":"), prefix = name;
       if (i >= 0) {
         prefix = name.substring(0, i);
         name = name.substring(i + 1);
       }
       return d3_nsPrefix.hasOwnProperty(prefix) ? {
         space: d3_nsPrefix[prefix],
         local: name
       } : name;
     }
   };
   d3_selectionPrototype.attr = function(name, value) {
     if (arguments.length < 2) {
       if (typeof name === "string") {
         var node = this.node();
         name = d3.ns.qualify(name);
         return name.local ? node.getAttributeNS(name.space, name.local) : node.getAttribute(name);
       }
       for (value in name) this.each(d3_selection_attr(value, name[value]));
       return this;
     }
     return this.each(d3_selection_attr(name, value));
   };
   function d3_selection_attr(name, value) {
     name = d3.ns.qualify(name);
     function attrNull() {
       this.removeAttribute(name);
     }
     function attrNullNS() {
       this.removeAttributeNS(name.space, name.local);
     }
     function attrConstant() {
       this.setAttribute(name, value);
     }
     function attrConstantNS() {
       this.setAttributeNS(name.space, name.local, value);
     }
     function attrFunction() {
       var x = value.apply(this, arguments);
       if (x == null) this.removeAttribute(name); else this.setAttribute(name, x);
     }
     function attrFunctionNS() {
       var x = value.apply(this, arguments);
       if (x == null) this.removeAttributeNS(name.space, name.local); else this.setAttributeNS(name.space, name.local, x);
     }
     return value == null ? name.local ? attrNullNS : attrNull : typeof value === "function" ? name.local ? attrFunctionNS : attrFunction : name.local ? attrConstantNS : attrConstant;
   }
   function d3_collapse(s) {
     return s.trim().replace(/\s+/g, " ");
   }
   d3_selectionPrototype.classed = function(name, value) {
     if (arguments.length < 2) {
       if (typeof name === "string") {
         var node = this.node(), n = (name = d3_selection_classes(name)).length, i = -1;
         if (value = node.classList) {
           while (++i < n) if (!value.contains(name[i])) return false;
         } else {
           value = node.getAttribute("class");
           while (++i < n) if (!d3_selection_classedRe(name[i]).test(value)) return false;
         }
         return true;
       }
       for (value in name) this.each(d3_selection_classed(value, name[value]));
       return this;
     }
     return this.each(d3_selection_classed(name, value));
   };
   function d3_selection_classedRe(name) {
     return new RegExp("(?:^|\\s+)" + d3.requote(name) + "(?:\\s+|$)", "g");
   }
   function d3_selection_classes(name) {
     return name.trim().split(/^|\s+/);
   }
   function d3_selection_classed(name, value) {
     name = d3_selection_classes(name).map(d3_selection_classedName);
     var n = name.length;
     function classedConstant() {
       var i = -1;
       while (++i < n) name[i](this, value);
     }
     function classedFunction() {
       var i = -1, x = value.apply(this, arguments);
       while (++i < n) name[i](this, x);
     }
     return typeof value === "function" ? classedFunction : classedConstant;
   }
   function d3_selection_classedName(name) {
     var re = d3_selection_classedRe(name);
     return function(node, value) {
       if (c = node.classList) return value ? c.add(name) : c.remove(name);
       var c = node.getAttribute("class") || "";
       if (value) {
         re.lastIndex = 0;
         if (!re.test(c)) node.setAttribute("class", d3_collapse(c + " " + name));
       } else {
         node.setAttribute("class", d3_collapse(c.replace(re, " ")));
       }
     };
   }
   d3_selectionPrototype.style = function(name, value, priority) {
     var n = arguments.length;
     if (n < 3) {
       if (typeof name !== "string") {
         if (n < 2) value = "";
         for (priority in name) this.each(d3_selection_style(priority, name[priority], value));
         return this;
       }
       if (n < 2) return d3_window.getComputedStyle(this.node(), null).getPropertyValue(name);
       priority = "";
     }
     return this.each(d3_selection_style(name, value, priority));
   };
   function d3_selection_style(name, value, priority) {
     function styleNull() {
       this.style.removeProperty(name);
     }
     function styleConstant() {
       this.style.setProperty(name, value, priority);
     }
     function styleFunction() {
       var x = value.apply(this, arguments);
       if (x == null) this.style.removeProperty(name); else this.style.setProperty(name, x, priority);
     }
     return value == null ? styleNull : typeof value === "function" ? styleFunction : styleConstant;
   }
   d3_selectionPrototype.property = function(name, value) {
     if (arguments.length < 2) {
       if (typeof name === "string") return this.node()[name];
       for (value in name) this.each(d3_selection_property(value, name[value]));
       return this;
     }
     return this.each(d3_selection_property(name, value));
   };
   function d3_selection_property(name, value) {
     function propertyNull() {
       delete this[name];
     }
     function propertyConstant() {
       this[name] = value;
     }
     function propertyFunction() {
       var x = value.apply(this, arguments);
       if (x == null) delete this[name]; else this[name] = x;
     }
     return value == null ? propertyNull : typeof value === "function" ? propertyFunction : propertyConstant;
   }
   d3_selectionPrototype.text = function(value) {
     return arguments.length ? this.each(typeof value === "function" ? function() {
       var v = value.apply(this, arguments);
       this.textContent = v == null ? "" : v;
     } : value == null ? function() {
       this.textContent = "";
     } : function() {
       this.textContent = value;
     }) : this.node().textContent;
   };
   d3_selectionPrototype.html = function(value) {
     return arguments.length ? this.each(typeof value === "function" ? function() {
       var v = value.apply(this, arguments);
       this.innerHTML = v == null ? "" : v;
     } : value == null ? function() {
       this.innerHTML = "";
     } : function() {
       this.innerHTML = value;
     }) : this.node().innerHTML;
   };
   d3_selectionPrototype.append = function(name) {
     name = d3_selection_creator(name);
     return this.select(function() {
       return this.appendChild(name.apply(this, arguments));
     });
   };
   function d3_selection_creator(name) {
     return typeof name === "function" ? name : (name = d3.ns.qualify(name)).local ? function() {
       return this.ownerDocument.createElementNS(name.space, name.local);
     } : function() {
       return this.ownerDocument.createElementNS(this.namespaceURI, name);
     };
   }
   d3_selectionPrototype.insert = function(name, before) {
     name = d3_selection_creator(name);
     before = d3_selection_selector(before);
     return this.select(function() {
       return this.insertBefore(name.apply(this, arguments), before.apply(this, arguments) || null);
     });
   };
   d3_selectionPrototype.remove = function() {
     return this.each(function() {
       var parent = this.parentNode;
       if (parent) parent.removeChild(this);
     });
   };
   d3_selectionPrototype.data = function(value, key) {
     var i = -1, n = this.length, group, node;
     if (!arguments.length) {
       value = new Array(n = (group = this[0]).length);
       while (++i < n) {
         if (node = group[i]) {
           value[i] = node.__data__;
         }
       }
       return value;
     }
     function bind(group, groupData) {
       var i, n = group.length, m = groupData.length, n0 = Math.min(n, m), updateNodes = new Array(m), enterNodes = new Array(m), exitNodes = new Array(n), node, nodeData;
       if (key) {
         var nodeByKeyValue = new d3_Map(), dataByKeyValue = new d3_Map(), keyValues = [], keyValue;
         for (i = -1; ++i < n; ) {
           keyValue = key.call(node = group[i], node.__data__, i);
           if (nodeByKeyValue.has(keyValue)) {
             exitNodes[i] = node;
           } else {
             nodeByKeyValue.set(keyValue, node);
           }
           keyValues.push(keyValue);
         }
         for (i = -1; ++i < m; ) {
           keyValue = key.call(groupData, nodeData = groupData[i], i);
           if (node = nodeByKeyValue.get(keyValue)) {
             updateNodes[i] = node;
             node.__data__ = nodeData;
           } else if (!dataByKeyValue.has(keyValue)) {
             enterNodes[i] = d3_selection_dataNode(nodeData);
           }
           dataByKeyValue.set(keyValue, nodeData);
           nodeByKeyValue.remove(keyValue);
         }
         for (i = -1; ++i < n; ) {
           if (nodeByKeyValue.has(keyValues[i])) {
             exitNodes[i] = group[i];
           }
         }
       } else {
         for (i = -1; ++i < n0; ) {
           node = group[i];
           nodeData = groupData[i];
           if (node) {
             node.__data__ = nodeData;
             updateNodes[i] = node;
           } else {
             enterNodes[i] = d3_selection_dataNode(nodeData);
           }
         }
         for (;i < m; ++i) {
           enterNodes[i] = d3_selection_dataNode(groupData[i]);
         }
         for (;i < n; ++i) {
           exitNodes[i] = group[i];
         }
       }
       enterNodes.update = updateNodes;
       enterNodes.parentNode = updateNodes.parentNode = exitNodes.parentNode = group.parentNode;
       enter.push(enterNodes);
       update.push(updateNodes);
       exit.push(exitNodes);
     }
     var enter = d3_selection_enter([]), update = d3_selection([]), exit = d3_selection([]);
     if (typeof value === "function") {
       while (++i < n) {
         bind(group = this[i], value.call(group, group.parentNode.__data__, i));
       }
     } else {
       while (++i < n) {
         bind(group = this[i], value);
       }
     }
     update.enter = function() {
       return enter;
     };
     update.exit = function() {
       return exit;
     };
     return update;
   };
   function d3_selection_dataNode(data) {
     return {
       __data__: data
     };
   }
   d3_selectionPrototype.datum = function(value) {
     return arguments.length ? this.property("__data__", value) : this.property("__data__");
   };
   d3_selectionPrototype.filter = function(filter) {
     var subgroups = [], subgroup, group, node;
     if (typeof filter !== "function") filter = d3_selection_filter(filter);
     for (var j = 0, m = this.length; j < m; j++) {
       subgroups.push(subgroup = []);
       subgroup.parentNode = (group = this[j]).parentNode;
       for (var i = 0, n = group.length; i < n; i++) {
         if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
           subgroup.push(node);
         }
       }
     }
     return d3_selection(subgroups);
   };
   function d3_selection_filter(selector) {
     return function() {
       return d3_selectMatches(this, selector);
     };
   }
   d3_selectionPrototype.order = function() {
     for (var j = -1, m = this.length; ++j < m; ) {
       for (var group = this[j], i = group.length - 1, next = group[i], node; --i >= 0; ) {
         if (node = group[i]) {
           if (next && next !== node.nextSibling) next.parentNode.insertBefore(node, next);
           next = node;
         }
       }
     }
     return this;
   };
   d3_selectionPrototype.sort = function(comparator) {
     comparator = d3_selection_sortComparator.apply(this, arguments);
     for (var j = -1, m = this.length; ++j < m; ) this[j].sort(comparator);
     return this.order();
   };
   function d3_selection_sortComparator(comparator) {
     if (!arguments.length) comparator = d3.ascending;
     return function(a, b) {
       return a && b ? comparator(a.__data__, b.__data__) : !a - !b;
     };
   }
   d3_selectionPrototype.each = function(callback) {
     return d3_selection_each(this, function(node, i, j) {
       callback.call(node, node.__data__, i, j);
     });
   };
   function d3_selection_each(groups, callback) {
     for (var j = 0, m = groups.length; j < m; j++) {
       for (var group = groups[j], i = 0, n = group.length, node; i < n; i++) {
         if (node = group[i]) callback(node, i, j);
       }
     }
     return groups;
   }
   d3_selectionPrototype.call = function(callback) {
     var args = d3_array(arguments);
     callback.apply(args[0] = this, args);
     return this;
   };
   d3_selectionPrototype.empty = function() {
     return !this.node();
   };
   d3_selectionPrototype.node = function() {
     for (var j = 0, m = this.length; j < m; j++) {
       for (var group = this[j], i = 0, n = group.length; i < n; i++) {
         var node = group[i];
         if (node) return node;
       }
     }
     return null;
   };
   d3_selectionPrototype.size = function() {
     var n = 0;
     this.each(function() {
       ++n;
     });
     return n;
   };
   function d3_selection_enter(selection) {
     d3_subclass(selection, d3_selection_enterPrototype);
     return selection;
   }
   var d3_selection_enterPrototype = [];
   d3.selection.enter = d3_selection_enter;
   d3.selection.enter.prototype = d3_selection_enterPrototype;
   d3_selection_enterPrototype.append = d3_selectionPrototype.append;
   d3_selection_enterPrototype.empty = d3_selectionPrototype.empty;
   d3_selection_enterPrototype.node = d3_selectionPrototype.node;
   d3_selection_enterPrototype.call = d3_selectionPrototype.call;
   d3_selection_enterPrototype.size = d3_selectionPrototype.size;
   d3_selection_enterPrototype.select = function(selector) {
     var subgroups = [], subgroup, subnode, upgroup, group, node;
     for (var j = -1, m = this.length; ++j < m; ) {
       upgroup = (group = this[j]).update;
       subgroups.push(subgroup = []);
       subgroup.parentNode = group.parentNode;
       for (var i = -1, n = group.length; ++i < n; ) {
         if (node = group[i]) {
           subgroup.push(upgroup[i] = subnode = selector.call(group.parentNode, node.__data__, i, j));
           subnode.__data__ = node.__data__;
         } else {
           subgroup.push(null);
         }
       }
     }
     return d3_selection(subgroups);
   };
   d3_selection_enterPrototype.insert = function(name, before) {
     if (arguments.length < 2) before = d3_selection_enterInsertBefore(this);
     return d3_selectionPrototype.insert.call(this, name, before);
   };
   function d3_selection_enterInsertBefore(enter) {
     var i0, j0;
     return function(d, i, j) {
       var group = enter[j].update, n = group.length, node;
       if (j != j0) j0 = j, i0 = 0;
       if (i >= i0) i0 = i + 1;
       while (!(node = group[i0]) && ++i0 < n) ;
       return node;
     };
   }
   d3_selectionPrototype.transition = function() {
     var id = d3_transitionInheritId || ++d3_transitionId, subgroups = [], subgroup, node, transition = d3_transitionInherit || {
       time: Date.now(),
       ease: d3_ease_cubicInOut,
       delay: 0,
       duration: 250
     };
     for (var j = -1, m = this.length; ++j < m; ) {
       subgroups.push(subgroup = []);
       for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
         if (node = group[i]) d3_transitionNode(node, i, id, transition);
         subgroup.push(node);
       }
     }
     return d3_transition(subgroups, id);
   };
   d3_selectionPrototype.interrupt = function() {
     return this.each(d3_selection_interrupt);
   };
   function d3_selection_interrupt() {
     var lock = this.__transition__;
     if (lock) ++lock.active;
   }
   d3.select = function(node) {
     var group = [ typeof node === "string" ? d3_select(node, d3_document) : node ];
     group.parentNode = d3_documentElement;
     return d3_selection([ group ]);
   };
   d3.selectAll = function(nodes) {
     var group = d3_array(typeof nodes === "string" ? d3_selectAll(nodes, d3_document) : nodes);
     group.parentNode = d3_documentElement;
     return d3_selection([ group ]);
   };
   var d3_selectionRoot = d3.select(d3_documentElement);
   d3_selectionPrototype.on = function(type, listener, capture) {
     var n = arguments.length;
     if (n < 3) {
       if (typeof type !== "string") {
         if (n < 2) listener = false;
         for (capture in type) this.each(d3_selection_on(capture, type[capture], listener));
         return this;
       }
       if (n < 2) return (n = this.node()["__on" + type]) && n._;
       capture = false;
     }
     return this.each(d3_selection_on(type, listener, capture));
   };
   function d3_selection_on(type, listener, capture) {
     var name = "__on" + type, i = type.indexOf("."), wrap = d3_selection_onListener;
     if (i > 0) type = type.substring(0, i);
     var filter = d3_selection_onFilters.get(type);
     if (filter) type = filter, wrap = d3_selection_onFilter;
     function onRemove() {
       var l = this[name];
       if (l) {
         this.removeEventListener(type, l, l.$);
         delete this[name];
       }
     }
     function onAdd() {
       var l = wrap(listener, d3_array(arguments));
       onRemove.call(this);
       this.addEventListener(type, this[name] = l, l.$ = capture);
       l._ = listener;
     }
     function removeAll() {
       var re = new RegExp("^__on([^.]+)" + d3.requote(type) + "$"), match;
       for (var name in this) {
         if (match = name.match(re)) {
           var l = this[name];
           this.removeEventListener(match[1], l, l.$);
           delete this[name];
         }
       }
     }
     return i ? listener ? onAdd : onRemove : listener ? d3_noop : removeAll;
   }
   var d3_selection_onFilters = d3.map({
     mouseenter: "mouseover",
     mouseleave: "mouseout"
   });
   d3_selection_onFilters.forEach(function(k) {
     if ("on" + k in d3_document) d3_selection_onFilters.remove(k);
   });
   function d3_selection_onListener(listener, argumentz) {
     return function(e) {
       var o = d3.event;
       d3.event = e;
       argumentz[0] = this.__data__;
       try {
         listener.apply(this, argumentz);
       } finally {
         d3.event = o;
       }
     };
   }
   function d3_selection_onFilter(listener, argumentz) {
     var l = d3_selection_onListener(listener, argumentz);
     return function(e) {
       var target = this, related = e.relatedTarget;
       if (!related || related !== target && !(related.compareDocumentPosition(target) & 8)) {
         l.call(target, e);
       }
     };
   }
   var d3_event_dragSelect = "onselectstart" in d3_document ? null : d3_vendorSymbol(d3_documentElement.style, "userSelect"), d3_event_dragId = 0;
   function d3_event_dragSuppress() {
     var name = ".dragsuppress-" + ++d3_event_dragId, click = "click" + name, w = d3.select(d3_window).on("touchmove" + name, d3_eventPreventDefault).on("dragstart" + name, d3_eventPreventDefault).on("selectstart" + name, d3_eventPreventDefault);
     if (d3_event_dragSelect) {
       var style = d3_documentElement.style, select = style[d3_event_dragSelect];
       style[d3_event_dragSelect] = "none";
     }
     return function(suppressClick) {
       w.on(name, null);
       if (d3_event_dragSelect) style[d3_event_dragSelect] = select;
       if (suppressClick) {
         function off() {
           w.on(click, null);
         }
         w.on(click, function() {
           d3_eventPreventDefault();
           off();
         }, true);
         setTimeout(off, 0);
       }
     };
   }
   d3.mouse = function(container) {
     return d3_mousePoint(container, d3_eventSource());
   };
   var d3_mouse_bug44083 = /WebKit/.test(d3_window.navigator.userAgent) ? -1 : 0;
   function d3_mousePoint(container, e) {
     if (e.changedTouches) e = e.changedTouches[0];
     var svg = container.ownerSVGElement || container;
     if (svg.createSVGPoint) {
       var point = svg.createSVGPoint();
       if (d3_mouse_bug44083 < 0 && (d3_window.scrollX || d3_window.scrollY)) {
         svg = d3.select("body").append("svg").style({
           position: "absolute",
           top: 0,
           left: 0,
           margin: 0,
           padding: 0,
           border: "none"
         }, "important");
         var ctm = svg[0][0].getScreenCTM();
         d3_mouse_bug44083 = !(ctm.f || ctm.e);
         svg.remove();
       }
       if (d3_mouse_bug44083) point.x = e.pageX, point.y = e.pageY; else point.x = e.clientX,
       point.y = e.clientY;
       point = point.matrixTransform(container.getScreenCTM().inverse());
       return [ point.x, point.y ];
     }
     var rect = container.getBoundingClientRect();
     return [ e.clientX - rect.left - container.clientLeft, e.clientY - rect.top - container.clientTop ];
   }
   d3.touches = function(container, touches) {
     if (arguments.length < 2) touches = d3_eventSource().touches;
     return touches ? d3_array(touches).map(function(touch) {
       var point = d3_mousePoint(container, touch);
       point.identifier = touch.identifier;
       return point;
     }) : [];
   };
   d3.behavior.drag = function() {
     var event = d3_eventDispatch(drag, "drag", "dragstart", "dragend"), origin = null, mousedown = dragstart(d3_noop, d3.mouse, "mousemove", "mouseup"), touchstart = dragstart(touchid, touchposition, "touchmove", "touchend");
     function drag() {
       this.on("mousedown.drag", mousedown).on("touchstart.drag", touchstart);
     }
     function touchid() {
       return d3.event.changedTouches[0].identifier;
     }
     function touchposition(parent, id) {
       return d3.touches(parent).filter(function(p) {
         return p.identifier === id;
       })[0];
     }
     function dragstart(id, position, move, end) {
       return function() {
         var target = this, parent = target.parentNode, event_ = event.of(target, arguments), eventTarget = d3.event.target, eventId = id(), drag = eventId == null ? "drag" : "drag-" + eventId, origin_ = position(parent, eventId), dragged = 0, offset, w = d3.select(d3_window).on(move + "." + drag, moved).on(end + "." + drag, ended), dragRestore = d3_event_dragSuppress();
         if (origin) {
           offset = origin.apply(target, arguments);
           offset = [ offset.x - origin_[0], offset.y - origin_[1] ];
         } else {
           offset = [ 0, 0 ];
         }
         event_({
           type: "dragstart"
         });
         function moved() {
           var p = position(parent, eventId), dx = p[0] - origin_[0], dy = p[1] - origin_[1];
           dragged |= dx | dy;
           origin_ = p;
           event_({
             type: "drag",
             x: p[0] + offset[0],
             y: p[1] + offset[1],
             dx: dx,
             dy: dy
           });
         }
         function ended() {
           w.on(move + "." + drag, null).on(end + "." + drag, null);
           dragRestore(dragged && d3.event.target === eventTarget);
           event_({
             type: "dragend"
           });
         }
       };
     }
     drag.origin = function(x) {
       if (!arguments.length) return origin;
       origin = x;
       return drag;
     };
     return d3.rebind(drag, event, "on");
   };
   var π = Math.PI, τ = 2 * π, halfπ = π / 2, ε = 1e-6, ε2 = ε * ε, d3_radians = π / 180, d3_degrees = 180 / π;
   function d3_sgn(x) {
     return x > 0 ? 1 : x < 0 ? -1 : 0;
   }
   function d3_cross2d(a, b, c) {
     return (b[0] - a[0]) * (c[1] - a[1]) - (b[1] - a[1]) * (c[0] - a[0]);
   }
   function d3_acos(x) {
     return x > 1 ? 0 : x < -1 ? π : Math.acos(x);
   }
   function d3_asin(x) {
     return x > 1 ? halfπ : x < -1 ? -halfπ : Math.asin(x);
   }
   function d3_sinh(x) {
     return ((x = Math.exp(x)) - 1 / x) / 2;
   }
   function d3_cosh(x) {
     return ((x = Math.exp(x)) + 1 / x) / 2;
   }
   function d3_tanh(x) {
     return ((x = Math.exp(2 * x)) - 1) / (x + 1);
   }
   function d3_haversin(x) {
     return (x = Math.sin(x / 2)) * x;
   }
   var ρ = Math.SQRT2, ρ2 = 2, ρ4 = 4;
   d3.interpolateZoom = function(p0, p1) {
     var ux0 = p0[0], uy0 = p0[1], w0 = p0[2], ux1 = p1[0], uy1 = p1[1], w1 = p1[2];
     var dx = ux1 - ux0, dy = uy1 - uy0, d2 = dx * dx + dy * dy, d1 = Math.sqrt(d2), b0 = (w1 * w1 - w0 * w0 + ρ4 * d2) / (2 * w0 * ρ2 * d1), b1 = (w1 * w1 - w0 * w0 - ρ4 * d2) / (2 * w1 * ρ2 * d1), r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0), r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1), dr = r1 - r0, S = (dr || Math.log(w1 / w0)) / ρ;
     function interpolate(t) {
       var s = t * S;
       if (dr) {
         var coshr0 = d3_cosh(r0), u = w0 / (ρ2 * d1) * (coshr0 * d3_tanh(ρ * s + r0) - d3_sinh(r0));
         return [ ux0 + u * dx, uy0 + u * dy, w0 * coshr0 / d3_cosh(ρ * s + r0) ];
       }
       return [ ux0 + t * dx, uy0 + t * dy, w0 * Math.exp(ρ * s) ];
     }
     interpolate.duration = S * 1e3;
     return interpolate;
   };
   d3.behavior.zoom = function() {
     var view = {
       x: 0,
       y: 0,
       k: 1
     }, translate0, center, size = [ 960, 500 ], scaleExtent = d3_behavior_zoomInfinity, mousedown = "mousedown.zoom", mousemove = "mousemove.zoom", mouseup = "mouseup.zoom", mousewheelTimer, touchstart = "touchstart.zoom", touchtime, event = d3_eventDispatch(zoom, "zoomstart", "zoom", "zoomend"), x0, x1, y0, y1;
     function zoom(g) {
       g.on(mousedown, mousedowned).on(d3_behavior_zoomWheel + ".zoom", mousewheeled).on(mousemove, mousewheelreset).on("dblclick.zoom", dblclicked).on(touchstart, touchstarted);
     }
     zoom.event = function(g) {
       g.each(function() {
         var event_ = event.of(this, arguments), view1 = view;
         if (d3_transitionInheritId) {
           d3.select(this).transition().each("start.zoom", function() {
             view = this.__chart__ || {
               x: 0,
               y: 0,
               k: 1
             };
             zoomstarted(event_);
           }).tween("zoom:zoom", function() {
             var dx = size[0], dy = size[1], cx = dx / 2, cy = dy / 2, i = d3.interpolateZoom([ (cx - view.x) / view.k, (cy - view.y) / view.k, dx / view.k ], [ (cx - view1.x) / view1.k, (cy - view1.y) / view1.k, dx / view1.k ]);
             return function(t) {
               var l = i(t), k = dx / l[2];
               this.__chart__ = view = {
                 x: cx - l[0] * k,
                 y: cy - l[1] * k,
                 k: k
               };
               zoomed(event_);
             };
           }).each("end.zoom", function() {
             zoomended(event_);
           });
         } else {
           this.__chart__ = view;
           zoomstarted(event_);
           zoomed(event_);
           zoomended(event_);
         }
       });
     };
     zoom.translate = function(_) {
       if (!arguments.length) return [ view.x, view.y ];
       view = {
         x: +_[0],
         y: +_[1],
         k: view.k
       };
       rescale();
       return zoom;
     };
     zoom.scale = function(_) {
       if (!arguments.length) return view.k;
       view = {
         x: view.x,
         y: view.y,
         k: +_
       };
       rescale();
       return zoom;
     };
     zoom.scaleExtent = function(_) {
       if (!arguments.length) return scaleExtent;
       scaleExtent = _ == null ? d3_behavior_zoomInfinity : [ +_[0], +_[1] ];
       return zoom;
     };
     zoom.center = function(_) {
       if (!arguments.length) return center;
       center = _ && [ +_[0], +_[1] ];
       return zoom;
     };
     zoom.size = function(_) {
       if (!arguments.length) return size;
       size = _ && [ +_[0], +_[1] ];
       return zoom;
     };
     zoom.x = function(z) {
       if (!arguments.length) return x1;
       x1 = z;
       x0 = z.copy();
       view = {
         x: 0,
         y: 0,
         k: 1
       };
       return zoom;
     };
     zoom.y = function(z) {
       if (!arguments.length) return y1;
       y1 = z;
       y0 = z.copy();
       view = {
         x: 0,
         y: 0,
         k: 1
       };
       return zoom;
     };
     function location(p) {
       return [ (p[0] - view.x) / view.k, (p[1] - view.y) / view.k ];
     }
     function point(l) {
       return [ l[0] * view.k + view.x, l[1] * view.k + view.y ];
     }
     function scaleTo(s) {
       view.k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], s));
     }
     function translateTo(p, l) {
       l = point(l);
       view.x += p[0] - l[0];
       view.y += p[1] - l[1];
     }
     function rescale() {
       if (x1) x1.domain(x0.range().map(function(x) {
         return (x - view.x) / view.k;
       }).map(x0.invert));
       if (y1) y1.domain(y0.range().map(function(y) {
         return (y - view.y) / view.k;
       }).map(y0.invert));
     }
     function zoomstarted(event) {
       event({
         type: "zoomstart"
       });
     }
     function zoomed(event) {
       rescale();
       event({
         type: "zoom",
         scale: view.k,
         translate: [ view.x, view.y ]
       });
     }
     function zoomended(event) {
       event({
         type: "zoomend"
       });
     }
     function mousedowned() {
       var target = this, event_ = event.of(target, arguments), eventTarget = d3.event.target, dragged = 0, w = d3.select(d3_window).on(mousemove, moved).on(mouseup, ended), l = location(d3.mouse(target)), dragRestore = d3_event_dragSuppress();
       d3_selection_interrupt.call(target);
       zoomstarted(event_);
       function moved() {
         dragged = 1;
         translateTo(d3.mouse(target), l);
         zoomed(event_);
       }
       function ended() {
         w.on(mousemove, d3_window === target ? mousewheelreset : null).on(mouseup, null);
         dragRestore(dragged && d3.event.target === eventTarget);
         zoomended(event_);
       }
     }
     function touchstarted() {
       var target = this, event_ = event.of(target, arguments), locations0 = {}, distance0 = 0, scale0, eventId = d3.event.changedTouches[0].identifier, touchmove = "touchmove.zoom-" + eventId, touchend = "touchend.zoom-" + eventId, w = d3.select(d3_window).on(touchmove, moved).on(touchend, ended), t = d3.select(target).on(mousedown, null).on(touchstart, started), dragRestore = d3_event_dragSuppress();
       d3_selection_interrupt.call(target);
       started();
       zoomstarted(event_);
       function relocate() {
         var touches = d3.touches(target);
         scale0 = view.k;
         touches.forEach(function(t) {
           if (t.identifier in locations0) locations0[t.identifier] = location(t);
         });
         return touches;
       }
       function started() {
         var changed = d3.event.changedTouches;
         for (var i = 0, n = changed.length; i < n; ++i) {
           locations0[changed[i].identifier] = null;
         }
         var touches = relocate(), now = Date.now();
         if (touches.length === 1) {
           if (now - touchtime < 500) {
             var p = touches[0], l = locations0[p.identifier];
             scaleTo(view.k * 2);
             translateTo(p, l);
             d3_eventPreventDefault();
             zoomed(event_);
           }
           touchtime = now;
         } else if (touches.length > 1) {
           var p = touches[0], q = touches[1], dx = p[0] - q[0], dy = p[1] - q[1];
           distance0 = dx * dx + dy * dy;
         }
       }
       function moved() {
         var touches = d3.touches(target), p0, l0, p1, l1;
         for (var i = 0, n = touches.length; i < n; ++i, l1 = null) {
           p1 = touches[i];
           if (l1 = locations0[p1.identifier]) {
             if (l0) break;
             p0 = p1, l0 = l1;
           }
         }
         if (l1) {
           var distance1 = (distance1 = p1[0] - p0[0]) * distance1 + (distance1 = p1[1] - p0[1]) * distance1, scale1 = distance0 && Math.sqrt(distance1 / distance0);
           p0 = [ (p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2 ];
           l0 = [ (l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2 ];
           scaleTo(scale1 * scale0);
         }
         touchtime = null;
         translateTo(p0, l0);
         zoomed(event_);
       }
       function ended() {
         if (d3.event.touches.length) {
           var changed = d3.event.changedTouches;
           for (var i = 0, n = changed.length; i < n; ++i) {
             delete locations0[changed[i].identifier];
           }
           for (var identifier in locations0) {
             return void relocate();
           }
         }
         w.on(touchmove, null).on(touchend, null);
         t.on(mousedown, mousedowned).on(touchstart, touchstarted);
         dragRestore();
         zoomended(event_);
       }
     }
     function mousewheeled() {
       var event_ = event.of(this, arguments);
       if (mousewheelTimer) clearTimeout(mousewheelTimer); else d3_selection_interrupt.call(this),
       zoomstarted(event_);
       mousewheelTimer = setTimeout(function() {
         mousewheelTimer = null;
         zoomended(event_);
       }, 50);
       d3_eventPreventDefault();
       var point = center || d3.mouse(this);
       if (!translate0) translate0 = location(point);
       scaleTo(Math.pow(2, d3_behavior_zoomDelta() * .002) * view.k);
       translateTo(point, translate0);
       zoomed(event_);
     }
     function mousewheelreset() {
       translate0 = null;
     }
     function dblclicked() {
       var event_ = event.of(this, arguments), p = d3.mouse(this), l = location(p), k = Math.log(view.k) / Math.LN2;
       zoomstarted(event_);
       scaleTo(Math.pow(2, d3.event.shiftKey ? Math.ceil(k) - 1 : Math.floor(k) + 1));
       translateTo(p, l);
       zoomed(event_);
       zoomended(event_);
     }
     return d3.rebind(zoom, event, "on");
   };
   var d3_behavior_zoomInfinity = [ 0, Infinity ];
   var d3_behavior_zoomDelta, d3_behavior_zoomWheel = "onwheel" in d3_document ? (d3_behavior_zoomDelta = function() {
     return -d3.event.deltaY * (d3.event.deltaMode ? 120 : 1);
   }, "wheel") : "onmousewheel" in d3_document ? (d3_behavior_zoomDelta = function() {
     return d3.event.wheelDelta;
   }, "mousewheel") : (d3_behavior_zoomDelta = function() {
     return -d3.event.detail;
   }, "MozMousePixelScroll");
   function d3_Color() {}
   d3_Color.prototype.toString = function() {
     return this.rgb() + "";
   };
   d3.hsl = function(h, s, l) {
     return arguments.length === 1 ? h instanceof d3_Hsl ? d3_hsl(h.h, h.s, h.l) : d3_rgb_parse("" + h, d3_rgb_hsl, d3_hsl) : d3_hsl(+h, +s, +l);
   };
   function d3_hsl(h, s, l) {
     return new d3_Hsl(h, s, l);
   }
   function d3_Hsl(h, s, l) {
     this.h = h;
     this.s = s;
     this.l = l;
   }
   var d3_hslPrototype = d3_Hsl.prototype = new d3_Color();
   d3_hslPrototype.brighter = function(k) {
     k = Math.pow(.7, arguments.length ? k : 1);
     return d3_hsl(this.h, this.s, this.l / k);
   };
   d3_hslPrototype.darker = function(k) {
     k = Math.pow(.7, arguments.length ? k : 1);
     return d3_hsl(this.h, this.s, k * this.l);
   };
   d3_hslPrototype.rgb = function() {
     return d3_hsl_rgb(this.h, this.s, this.l);
   };
   function d3_hsl_rgb(h, s, l) {
     var m1, m2;
     h = isNaN(h) ? 0 : (h %= 360) < 0 ? h + 360 : h;
     s = isNaN(s) ? 0 : s < 0 ? 0 : s > 1 ? 1 : s;
     l = l < 0 ? 0 : l > 1 ? 1 : l;
     m2 = l <= .5 ? l * (1 + s) : l + s - l * s;
     m1 = 2 * l - m2;
     function v(h) {
       if (h > 360) h -= 360; else if (h < 0) h += 360;
       if (h < 60) return m1 + (m2 - m1) * h / 60;
       if (h < 180) return m2;
       if (h < 240) return m1 + (m2 - m1) * (240 - h) / 60;
       return m1;
     }
     function vv(h) {
       return Math.round(v(h) * 255);
     }
     return d3_rgb(vv(h + 120), vv(h), vv(h - 120));
   }
   d3.hcl = function(h, c, l) {
     return arguments.length === 1 ? h instanceof d3_Hcl ? d3_hcl(h.h, h.c, h.l) : h instanceof d3_Lab ? d3_lab_hcl(h.l, h.a, h.b) : d3_lab_hcl((h = d3_rgb_lab((h = d3.rgb(h)).r, h.g, h.b)).l, h.a, h.b) : d3_hcl(+h, +c, +l);
   };
   function d3_hcl(h, c, l) {
     return new d3_Hcl(h, c, l);
   }
   function d3_Hcl(h, c, l) {
     this.h = h;
     this.c = c;
     this.l = l;
   }
   var d3_hclPrototype = d3_Hcl.prototype = new d3_Color();
   d3_hclPrototype.brighter = function(k) {
     return d3_hcl(this.h, this.c, Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)));
   };
   d3_hclPrototype.darker = function(k) {
     return d3_hcl(this.h, this.c, Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)));
   };
   d3_hclPrototype.rgb = function() {
     return d3_hcl_lab(this.h, this.c, this.l).rgb();
   };
   function d3_hcl_lab(h, c, l) {
     if (isNaN(h)) h = 0;
     if (isNaN(c)) c = 0;
     return d3_lab(l, Math.cos(h *= d3_radians) * c, Math.sin(h) * c);
   }
   d3.lab = function(l, a, b) {
     return arguments.length === 1 ? l instanceof d3_Lab ? d3_lab(l.l, l.a, l.b) : l instanceof d3_Hcl ? d3_hcl_lab(l.l, l.c, l.h) : d3_rgb_lab((l = d3.rgb(l)).r, l.g, l.b) : d3_lab(+l, +a, +b);
   };
   function d3_lab(l, a, b) {
     return new d3_Lab(l, a, b);
   }
   function d3_Lab(l, a, b) {
     this.l = l;
     this.a = a;
     this.b = b;
   }
   var d3_lab_K = 18;
   var d3_lab_X = .95047, d3_lab_Y = 1, d3_lab_Z = 1.08883;
   var d3_labPrototype = d3_Lab.prototype = new d3_Color();
   d3_labPrototype.brighter = function(k) {
     return d3_lab(Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
   };
   d3_labPrototype.darker = function(k) {
     return d3_lab(Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
   };
   d3_labPrototype.rgb = function() {
     return d3_lab_rgb(this.l, this.a, this.b);
   };
   function d3_lab_rgb(l, a, b) {
     var y = (l + 16) / 116, x = y + a / 500, z = y - b / 200;
     x = d3_lab_xyz(x) * d3_lab_X;
     y = d3_lab_xyz(y) * d3_lab_Y;
     z = d3_lab_xyz(z) * d3_lab_Z;
     return d3_rgb(d3_xyz_rgb(3.2404542 * x - 1.5371385 * y - .4985314 * z), d3_xyz_rgb(-.969266 * x + 1.8760108 * y + .041556 * z), d3_xyz_rgb(.0556434 * x - .2040259 * y + 1.0572252 * z));
   }
   function d3_lab_hcl(l, a, b) {
     return l > 0 ? d3_hcl(Math.atan2(b, a) * d3_degrees, Math.sqrt(a * a + b * b), l) : d3_hcl(NaN, NaN, l);
   }
   function d3_lab_xyz(x) {
     return x > .206893034 ? x * x * x : (x - 4 / 29) / 7.787037;
   }
   function d3_xyz_lab(x) {
     return x > .008856 ? Math.pow(x, 1 / 3) : 7.787037 * x + 4 / 29;
   }
   function d3_xyz_rgb(r) {
     return Math.round(255 * (r <= .00304 ? 12.92 * r : 1.055 * Math.pow(r, 1 / 2.4) - .055));
   }
   d3.rgb = function(r, g, b) {
     return arguments.length === 1 ? r instanceof d3_Rgb ? d3_rgb(r.r, r.g, r.b) : d3_rgb_parse("" + r, d3_rgb, d3_hsl_rgb) : d3_rgb(~~r, ~~g, ~~b);
   };
   function d3_rgbNumber(value) {
     return d3_rgb(value >> 16, value >> 8 & 255, value & 255);
   }
   function d3_rgbString(value) {
     return d3_rgbNumber(value) + "";
   }
   function d3_rgb(r, g, b) {
     return new d3_Rgb(r, g, b);
   }
   function d3_Rgb(r, g, b) {
     this.r = r;
     this.g = g;
     this.b = b;
   }
   var d3_rgbPrototype = d3_Rgb.prototype = new d3_Color();
   d3_rgbPrototype.brighter = function(k) {
     k = Math.pow(.7, arguments.length ? k : 1);
     var r = this.r, g = this.g, b = this.b, i = 30;
     if (!r && !g && !b) return d3_rgb(i, i, i);
     if (r && r < i) r = i;
     if (g && g < i) g = i;
     if (b && b < i) b = i;
     return d3_rgb(Math.min(255, ~~(r / k)), Math.min(255, ~~(g / k)), Math.min(255, ~~(b / k)));
   };
   d3_rgbPrototype.darker = function(k) {
     k = Math.pow(.7, arguments.length ? k : 1);
     return d3_rgb(~~(k * this.r), ~~(k * this.g), ~~(k * this.b));
   };
   d3_rgbPrototype.hsl = function() {
     return d3_rgb_hsl(this.r, this.g, this.b);
   };
   d3_rgbPrototype.toString = function() {
     return "#" + d3_rgb_hex(this.r) + d3_rgb_hex(this.g) + d3_rgb_hex(this.b);
   };
   function d3_rgb_hex(v) {
     return v < 16 ? "0" + Math.max(0, v).toString(16) : Math.min(255, v).toString(16);
   }
   function d3_rgb_parse(format, rgb, hsl) {
     var r = 0, g = 0, b = 0, m1, m2, name;
     m1 = /([a-z]+)\((.*)\)/i.exec(format);
     if (m1) {
       m2 = m1[2].split(",");
       switch (m1[1]) {
        case "hsl":
         {
           return hsl(parseFloat(m2[0]), parseFloat(m2[1]) / 100, parseFloat(m2[2]) / 100);
         }
        case "rgb":
         {
           return rgb(d3_rgb_parseNumber(m2[0]), d3_rgb_parseNumber(m2[1]), d3_rgb_parseNumber(m2[2]));
         }
       }
     }
     if (name = d3_rgb_names.get(format)) return rgb(name.r, name.g, name.b);
     if (format != null && format.charAt(0) === "#") {
       if (format.length === 4) {
         r = format.charAt(1);
         r += r;
         g = format.charAt(2);
         g += g;
         b = format.charAt(3);
         b += b;
       } else if (format.length === 7) {
         r = format.substring(1, 3);
         g = format.substring(3, 5);
         b = format.substring(5, 7);
       }
       r = parseInt(r, 16);
       g = parseInt(g, 16);
       b = parseInt(b, 16);
     }
     return rgb(r, g, b);
   }
   function d3_rgb_hsl(r, g, b) {
     var min = Math.min(r /= 255, g /= 255, b /= 255), max = Math.max(r, g, b), d = max - min, h, s, l = (max + min) / 2;
     if (d) {
       s = l < .5 ? d / (max + min) : d / (2 - max - min);
       if (r == max) h = (g - b) / d + (g < b ? 6 : 0); else if (g == max) h = (b - r) / d + 2; else h = (r - g) / d + 4;
       h *= 60;
     } else {
       h = NaN;
       s = l > 0 && l < 1 ? 0 : h;
     }
     return d3_hsl(h, s, l);
   }
   function d3_rgb_lab(r, g, b) {
     r = d3_rgb_xyz(r);
     g = d3_rgb_xyz(g);
     b = d3_rgb_xyz(b);
     var x = d3_xyz_lab((.4124564 * r + .3575761 * g + .1804375 * b) / d3_lab_X), y = d3_xyz_lab((.2126729 * r + .7151522 * g + .072175 * b) / d3_lab_Y), z = d3_xyz_lab((.0193339 * r + .119192 * g + .9503041 * b) / d3_lab_Z);
     return d3_lab(116 * y - 16, 500 * (x - y), 200 * (y - z));
   }
   function d3_rgb_xyz(r) {
     return (r /= 255) <= .04045 ? r / 12.92 : Math.pow((r + .055) / 1.055, 2.4);
   }
   function d3_rgb_parseNumber(c) {
     var f = parseFloat(c);
     return c.charAt(c.length - 1) === "%" ? Math.round(f * 2.55) : f;
   }
   var d3_rgb_names = d3.map({
     aliceblue: 15792383,
     antiquewhite: 16444375,
     aqua: 65535,
     aquamarine: 8388564,
     azure: 15794175,
     beige: 16119260,
     bisque: 16770244,
     black: 0,
     blanchedalmond: 16772045,
     blue: 255,
     blueviolet: 9055202,
     brown: 10824234,
     burlywood: 14596231,
     cadetblue: 6266528,
     chartreuse: 8388352,
     chocolate: 13789470,
     coral: 16744272,
     cornflowerblue: 6591981,
     cornsilk: 16775388,
     crimson: 14423100,
     cyan: 65535,
     darkblue: 139,
     darkcyan: 35723,
     darkgoldenrod: 12092939,
     darkgray: 11119017,
     darkgreen: 25600,
     darkgrey: 11119017,
     darkkhaki: 12433259,
     darkmagenta: 9109643,
     darkolivegreen: 5597999,
     darkorange: 16747520,
     darkorchid: 10040012,
     darkred: 9109504,
     darksalmon: 15308410,
     darkseagreen: 9419919,
     darkslateblue: 4734347,
     darkslategray: 3100495,
     darkslategrey: 3100495,
     darkturquoise: 52945,
     darkviolet: 9699539,
     deeppink: 16716947,
     deepskyblue: 49151,
     dimgray: 6908265,
     dimgrey: 6908265,
     dodgerblue: 2003199,
     firebrick: 11674146,
     floralwhite: 16775920,
     forestgreen: 2263842,
     fuchsia: 16711935,
     gainsboro: 14474460,
     ghostwhite: 16316671,
     gold: 16766720,
     goldenrod: 14329120,
     gray: 8421504,
     green: 32768,
     greenyellow: 11403055,
     grey: 8421504,
     honeydew: 15794160,
     hotpink: 16738740,
     indianred: 13458524,
     indigo: 4915330,
     ivory: 16777200,
     khaki: 15787660,
     lavender: 15132410,
     lavenderblush: 16773365,
     lawngreen: 8190976,
     lemonchiffon: 16775885,
     lightblue: 11393254,
     lightcoral: 15761536,
     lightcyan: 14745599,
     lightgoldenrodyellow: 16448210,
     lightgray: 13882323,
     lightgreen: 9498256,
     lightgrey: 13882323,
     lightpink: 16758465,
     lightsalmon: 16752762,
     lightseagreen: 2142890,
     lightskyblue: 8900346,
     lightslategray: 7833753,
     lightslategrey: 7833753,
     lightsteelblue: 11584734,
     lightyellow: 16777184,
     lime: 65280,
     limegreen: 3329330,
     linen: 16445670,
     magenta: 16711935,
     maroon: 8388608,
     mediumaquamarine: 6737322,
     mediumblue: 205,
     mediumorchid: 12211667,
     mediumpurple: 9662683,
     mediumseagreen: 3978097,
     mediumslateblue: 8087790,
     mediumspringgreen: 64154,
     mediumturquoise: 4772300,
     mediumvioletred: 13047173,
     midnightblue: 1644912,
     mintcream: 16121850,
     mistyrose: 16770273,
     moccasin: 16770229,
     navajowhite: 16768685,
     navy: 128,
     oldlace: 16643558,
     olive: 8421376,
     olivedrab: 7048739,
     orange: 16753920,
     orangered: 16729344,
     orchid: 14315734,
     palegoldenrod: 15657130,
     palegreen: 10025880,
     paleturquoise: 11529966,
     palevioletred: 14381203,
     papayawhip: 16773077,
     peachpuff: 16767673,
     peru: 13468991,
     pink: 16761035,
     plum: 14524637,
     powderblue: 11591910,
     purple: 8388736,
     red: 16711680,
     rosybrown: 12357519,
     royalblue: 4286945,
     saddlebrown: 9127187,
     salmon: 16416882,
     sandybrown: 16032864,
     seagreen: 3050327,
     seashell: 16774638,
     sienna: 10506797,
     silver: 12632256,
     skyblue: 8900331,
     slateblue: 6970061,
     slategray: 7372944,
     slategrey: 7372944,
     snow: 16775930,
     springgreen: 65407,
     steelblue: 4620980,
     tan: 13808780,
     teal: 32896,
     thistle: 14204888,
     tomato: 16737095,
     turquoise: 4251856,
     violet: 15631086,
     wheat: 16113331,
     white: 16777215,
     whitesmoke: 16119285,
     yellow: 16776960,
     yellowgreen: 10145074
   });
   d3_rgb_names.forEach(function(key, value) {
     d3_rgb_names.set(key, d3_rgbNumber(value));
   });
   function d3_functor(v) {
     return typeof v === "function" ? v : function() {
       return v;
     };
   }
   d3.functor = d3_functor;
   function d3_identity(d) {
     return d;
   }
   d3.xhr = d3_xhrType(d3_identity);
   function d3_xhrType(response) {
     return function(url, mimeType, callback) {
       if (arguments.length === 2 && typeof mimeType === "function") callback = mimeType,
       mimeType = null;
       return d3_xhr(url, mimeType, response, callback);
     };
   }
   function d3_xhr(url, mimeType, response, callback) {
     var xhr = {}, dispatch = d3.dispatch("beforesend", "progress", "load", "error"), headers = {}, request = new XMLHttpRequest(), responseType = null;
     if (d3_window.XDomainRequest && !("withCredentials" in request) && /^(http(s)?:)?\/\//.test(url)) request = new XDomainRequest();
     "onload" in request ? request.onload = request.onerror = respond : request.onreadystatechange = function() {
       request.readyState > 3 && respond();
     };
     function respond() {
       var status = request.status, result;
       if (!status && request.responseText || status >= 200 && status < 300 || status === 304) {
         try {
           result = response.call(xhr, request);
         } catch (e) {
           dispatch.error.call(xhr, e);
           return;
         }
         dispatch.load.call(xhr, result);
       } else {
         dispatch.error.call(xhr, request);
       }
     }
     request.onprogress = function(event) {
       var o = d3.event;
       d3.event = event;
       try {
         dispatch.progress.call(xhr, request);
       } finally {
         d3.event = o;
       }
     };
     xhr.header = function(name, value) {
       name = (name + "").toLowerCase();
       if (arguments.length < 2) return headers[name];
       if (value == null) delete headers[name]; else headers[name] = value + "";
       return xhr;
     };
     xhr.mimeType = function(value) {
       if (!arguments.length) return mimeType;
       mimeType = value == null ? null : value + "";
       return xhr;
     };
     xhr.responseType = function(value) {
       if (!arguments.length) return responseType;
       responseType = value;
       return xhr;
     };
     xhr.response = function(value) {
       response = value;
       return xhr;
     };
     [ "get", "post" ].forEach(function(method) {
       xhr[method] = function() {
         return xhr.send.apply(xhr, [ method ].concat(d3_array(arguments)));
       };
     });
     xhr.send = function(method, data, callback) {
       if (arguments.length === 2 && typeof data === "function") callback = data, data = null;
       request.open(method, url, true);
       if (mimeType != null && !("accept" in headers)) headers["accept"] = mimeType + ",*/*";
       if (request.setRequestHeader) for (var name in headers) request.setRequestHeader(name, headers[name]);
       if (mimeType != null && request.overrideMimeType) request.overrideMimeType(mimeType);
       if (responseType != null) request.responseType = responseType;
       if (callback != null) xhr.on("error", callback).on("load", function(request) {
         callback(null, request);
       });
       dispatch.beforesend.call(xhr, request);
       request.send(data == null ? null : data);
       return xhr;
     };
     xhr.abort = function() {
       request.abort();
       return xhr;
     };
     d3.rebind(xhr, dispatch, "on");
     return callback == null ? xhr : xhr.get(d3_xhr_fixCallback(callback));
   }
   function d3_xhr_fixCallback(callback) {
     return callback.length === 1 ? function(error, request) {
       callback(error == null ? request : null);
     } : callback;
   }
   d3.dsv = function(delimiter, mimeType) {
     var reFormat = new RegExp('["' + delimiter + "\n]"), delimiterCode = delimiter.charCodeAt(0);
     function dsv(url, row, callback) {
       if (arguments.length < 3) callback = row, row = null;
       var xhr = d3_xhr(url, mimeType, row == null ? response : typedResponse(row), callback);
       xhr.row = function(_) {
         return arguments.length ? xhr.response((row = _) == null ? response : typedResponse(_)) : row;
       };
       return xhr;
     }
     function response(request) {
       return dsv.parse(request.responseText);
     }
     function typedResponse(f) {
       return function(request) {
         return dsv.parse(request.responseText, f);
       };
     }
     dsv.parse = function(text, f) {
       var o;
       return dsv.parseRows(text, function(row, i) {
         if (o) return o(row, i - 1);
         var a = new Function("d", "return {" + row.map(function(name, i) {
           return JSON.stringify(name) + ": d[" + i + "]";
         }).join(",") + "}");
         o = f ? function(row, i) {
           return f(a(row), i);
         } : a;
       });
     };
     dsv.parseRows = function(text, f) {
       var EOL = {}, EOF = {}, rows = [], N = text.length, I = 0, n = 0, t, eol;
       function token() {
         if (I >= N) return EOF;
         if (eol) return eol = false, EOL;
         var j = I;
         if (text.charCodeAt(j) === 34) {
           var i = j;
           while (i++ < N) {
             if (text.charCodeAt(i) === 34) {
               if (text.charCodeAt(i + 1) !== 34) break;
               ++i;
             }
           }
           I = i + 2;
           var c = text.charCodeAt(i + 1);
           if (c === 13) {
             eol = true;
             if (text.charCodeAt(i + 2) === 10) ++I;
           } else if (c === 10) {
             eol = true;
           }
           return text.substring(j + 1, i).replace(/""/g, '"');
         }
         while (I < N) {
           var c = text.charCodeAt(I++), k = 1;
           if (c === 10) eol = true; else if (c === 13) {
             eol = true;
             if (text.charCodeAt(I) === 10) ++I, ++k;
           } else if (c !== delimiterCode) continue;
           return text.substring(j, I - k);
         }
         return text.substring(j);
       }
       while ((t = token()) !== EOF) {
         var a = [];
         while (t !== EOL && t !== EOF) {
           a.push(t);
           t = token();
         }
         if (f && !(a = f(a, n++))) continue;
         rows.push(a);
       }
       return rows;
     };
     dsv.format = function(rows) {
       if (Array.isArray(rows[0])) return dsv.formatRows(rows);
       var fieldSet = new d3_Set(), fields = [];
       rows.forEach(function(row) {
         for (var field in row) {
           if (!fieldSet.has(field)) {
             fields.push(fieldSet.add(field));
           }
         }
       });
       return [ fields.map(formatValue).join(delimiter) ].concat(rows.map(function(row) {
         return fields.map(function(field) {
           return formatValue(row[field]);
         }).join(delimiter);
       })).join("\n");
     };
     dsv.formatRows = function(rows) {
       return rows.map(formatRow).join("\n");
     };
     function formatRow(row) {
       return row.map(formatValue).join(delimiter);
     }
     function formatValue(text) {
       return reFormat.test(text) ? '"' + text.replace(/\"/g, '""') + '"' : text;
     }
     return dsv;
   };
   d3.csv = d3.dsv(",", "text/csv");
   d3.tsv = d3.dsv("	", "text/tab-separated-values");
   var d3_timer_queueHead, d3_timer_queueTail, d3_timer_interval, d3_timer_timeout, d3_timer_active, d3_timer_frame = d3_window[d3_vendorSymbol(d3_window, "requestAnimationFrame")] || function(callback) {
     setTimeout(callback, 17);
   };
   d3.timer = function(callback, delay, then) {
     var n = arguments.length;
     if (n < 2) delay = 0;
     if (n < 3) then = Date.now();
     var time = then + delay, timer = {
       c: callback,
       t: time,
       f: false,
       n: null
     };
     if (d3_timer_queueTail) d3_timer_queueTail.n = timer; else d3_timer_queueHead = timer;
     d3_timer_queueTail = timer;
     if (!d3_timer_interval) {
       d3_timer_timeout = clearTimeout(d3_timer_timeout);
       d3_timer_interval = 1;
       d3_timer_frame(d3_timer_step);
     }
   };
   function d3_timer_step() {
     var now = d3_timer_mark(), delay = d3_timer_sweep() - now;
     if (delay > 24) {
       if (isFinite(delay)) {
         clearTimeout(d3_timer_timeout);
         d3_timer_timeout = setTimeout(d3_timer_step, delay);
       }
       d3_timer_interval = 0;
     } else {
       d3_timer_interval = 1;
       d3_timer_frame(d3_timer_step);
     }
   }
   d3.timer.flush = function() {
     d3_timer_mark();
     d3_timer_sweep();
   };
   function d3_timer_mark() {
     var now = Date.now();
     d3_timer_active = d3_timer_queueHead;
     while (d3_timer_active) {
       if (now >= d3_timer_active.t) d3_timer_active.f = d3_timer_active.c(now - d3_timer_active.t);
       d3_timer_active = d3_timer_active.n;
     }
     return now;
   }
   function d3_timer_sweep() {
     var t0, t1 = d3_timer_queueHead, time = Infinity;
     while (t1) {
       if (t1.f) {
         t1 = t0 ? t0.n = t1.n : d3_timer_queueHead = t1.n;
       } else {
         if (t1.t < time) time = t1.t;
         t1 = (t0 = t1).n;
       }
     }
     d3_timer_queueTail = t0;
     return time;
   }
   function d3_format_precision(x, p) {
     return p - (x ? Math.ceil(Math.log(x) / Math.LN10) : 1);
   }
   d3.round = function(x, n) {
     return n ? Math.round(x * (n = Math.pow(10, n))) / n : Math.round(x);
   };
   var d3_formatPrefixes = [ "y", "z", "a", "f", "p", "n", "µ", "m", "", "k", "M", "G", "T", "P", "E", "Z", "Y" ].map(d3_formatPrefix);
   d3.formatPrefix = function(value, precision) {
     var i = 0;
     if (value) {
       if (value < 0) value *= -1;
       if (precision) value = d3.round(value, d3_format_precision(value, precision));
       i = 1 + Math.floor(1e-12 + Math.log(value) / Math.LN10);
       i = Math.max(-24, Math.min(24, Math.floor((i <= 0 ? i + 1 : i - 1) / 3) * 3));
     }
     return d3_formatPrefixes[8 + i / 3];
   };
   function d3_formatPrefix(d, i) {
     var k = Math.pow(10, abs(8 - i) * 3);
     return {
       scale: i > 8 ? function(d) {
         return d / k;
       } : function(d) {
         return d * k;
       },
       symbol: d
     };
   }
   function d3_locale_numberFormat(locale) {
     var locale_decimal = locale.decimal, locale_thousands = locale.thousands, locale_grouping = locale.grouping, locale_currency = locale.currency, formatGroup = locale_grouping ? function(value) {
       var i = value.length, t = [], j = 0, g = locale_grouping[0];
       while (i > 0 && g > 0) {
         t.push(value.substring(i -= g, i + g));
         g = locale_grouping[j = (j + 1) % locale_grouping.length];
       }
       return t.reverse().join(locale_thousands);
     } : d3_identity;
     return function(specifier) {
       var match = d3_format_re.exec(specifier), fill = match[1] || " ", align = match[2] || ">", sign = match[3] || "", symbol = match[4] || "", zfill = match[5], width = +match[6], comma = match[7], precision = match[8], type = match[9], scale = 1, prefix = "", suffix = "", integer = false;
       if (precision) precision = +precision.substring(1);
       if (zfill || fill === "0" && align === "=") {
         zfill = fill = "0";
         align = "=";
         if (comma) width -= Math.floor((width - 1) / 4);
       }
       switch (type) {
        case "n":
         comma = true;
         type = "g";
         break;
        case "%":
         scale = 100;
         suffix = "%";
         type = "f";
         break;
        case "p":
         scale = 100;
         suffix = "%";
         type = "r";
         break;
        case "b":
        case "o":
        case "x":
        case "X":
         if (symbol === "#") prefix = "0" + type.toLowerCase();
        case "c":
        case "d":
         integer = true;
         precision = 0;
         break;
        case "s":
         scale = -1;
         type = "r";
         break;
       }
       if (symbol === "$") prefix = locale_currency[0], suffix = locale_currency[1];
       if (type == "r" && !precision) type = "g";
       if (precision != null) {
         if (type == "g") precision = Math.max(1, Math.min(21, precision)); else if (type == "e" || type == "f") precision = Math.max(0, Math.min(20, precision));
       }
       type = d3_format_types.get(type) || d3_format_typeDefault;
       var zcomma = zfill && comma;
       return function(value) {
         var fullSuffix = suffix;
         if (integer && value % 1) return "";
         var negative = value < 0 || value === 0 && 1 / value < 0 ? (value = -value, "-") : sign;
         if (scale < 0) {
           var unit = d3.formatPrefix(value, precision);
           value = unit.scale(value);
           fullSuffix = unit.symbol + suffix;
         } else {
           value *= scale;
         }
         value = type(value, precision);
         var i = value.lastIndexOf("."), before = i < 0 ? value : value.substring(0, i), after = i < 0 ? "" : locale_decimal + value.substring(i + 1);
         if (!zfill && comma) before = formatGroup(before);
         var length = prefix.length + before.length + after.length + (zcomma ? 0 : negative.length), padding = length < width ? new Array(length = width - length + 1).join(fill) : "";
         if (zcomma) before = formatGroup(padding + before);
         negative += prefix;
         value = before + after;
         return (align === "<" ? negative + value + padding : align === ">" ? padding + negative + value : align === "^" ? padding.substring(0, length >>= 1) + negative + value + padding.substring(length) : negative + (zcomma ? value : padding + value)) + fullSuffix;
       };
     };
   }
   var d3_format_re = /(?:([^{])?([<>=^]))?([+\- ])?([$#])?(0)?(\d+)?(,)?(\.-?\d+)?([a-z%])?/i;
   var d3_format_types = d3.map({
     b: function(x) {
       return x.toString(2);
     },
     c: function(x) {
       return String.fromCharCode(x);
     },
     o: function(x) {
       return x.toString(8);
     },
     x: function(x) {
       return x.toString(16);
     },
     X: function(x) {
       return x.toString(16).toUpperCase();
     },
     g: function(x, p) {
       return x.toPrecision(p);
     },
     e: function(x, p) {
       return x.toExponential(p);
     },
     f: function(x, p) {
       return x.toFixed(p);
     },
     r: function(x, p) {
       return (x = d3.round(x, d3_format_precision(x, p))).toFixed(Math.max(0, Math.min(20, d3_format_precision(x * (1 + 1e-15), p))));
     }
   });
   function d3_format_typeDefault(x) {
     return x + "";
   }
   var d3_time = d3.time = {}, d3_date = Date;
   function d3_date_utc() {
     this._ = new Date(arguments.length > 1 ? Date.UTC.apply(this, arguments) : arguments[0]);
   }
   d3_date_utc.prototype = {
     getDate: function() {
       return this._.getUTCDate();
     },
     getDay: function() {
       return this._.getUTCDay();
     },
     getFullYear: function() {
       return this._.getUTCFullYear();
     },
     getHours: function() {
       return this._.getUTCHours();
     },
     getMilliseconds: function() {
       return this._.getUTCMilliseconds();
     },
     getMinutes: function() {
       return this._.getUTCMinutes();
     },
     getMonth: function() {
       return this._.getUTCMonth();
     },
     getSeconds: function() {
       return this._.getUTCSeconds();
     },
     getTime: function() {
       return this._.getTime();
     },
     getTimezoneOffset: function() {
       return 0;
     },
     valueOf: function() {
       return this._.valueOf();
     },
     setDate: function() {
       d3_time_prototype.setUTCDate.apply(this._, arguments);
     },
     setDay: function() {
       d3_time_prototype.setUTCDay.apply(this._, arguments);
     },
     setFullYear: function() {
       d3_time_prototype.setUTCFullYear.apply(this._, arguments);
     },
     setHours: function() {
       d3_time_prototype.setUTCHours.apply(this._, arguments);
     },
     setMilliseconds: function() {
       d3_time_prototype.setUTCMilliseconds.apply(this._, arguments);
     },
     setMinutes: function() {
       d3_time_prototype.setUTCMinutes.apply(this._, arguments);
     },
     setMonth: function() {
       d3_time_prototype.setUTCMonth.apply(this._, arguments);
     },
     setSeconds: function() {
       d3_time_prototype.setUTCSeconds.apply(this._, arguments);
     },
     setTime: function() {
       d3_time_prototype.setTime.apply(this._, arguments);
     }
   };
   var d3_time_prototype = Date.prototype;
   function d3_time_interval(local, step, number) {
     function round(date) {
       var d0 = local(date), d1 = offset(d0, 1);
       return date - d0 < d1 - date ? d0 : d1;
     }
     function ceil(date) {
       step(date = local(new d3_date(date - 1)), 1);
       return date;
     }
     function offset(date, k) {
       step(date = new d3_date(+date), k);
       return date;
     }
     function range(t0, t1, dt) {
       var time = ceil(t0), times = [];
       if (dt > 1) {
         while (time < t1) {
           if (!(number(time) % dt)) times.push(new Date(+time));
           step(time, 1);
         }
       } else {
         while (time < t1) times.push(new Date(+time)), step(time, 1);
       }
       return times;
     }
     function range_utc(t0, t1, dt) {
       try {
         d3_date = d3_date_utc;
         var utc = new d3_date_utc();
         utc._ = t0;
         return range(utc, t1, dt);
       } finally {
         d3_date = Date;
       }
     }
     local.floor = local;
     local.round = round;
     local.ceil = ceil;
     local.offset = offset;
     local.range = range;
     var utc = local.utc = d3_time_interval_utc(local);
     utc.floor = utc;
     utc.round = d3_time_interval_utc(round);
     utc.ceil = d3_time_interval_utc(ceil);
     utc.offset = d3_time_interval_utc(offset);
     utc.range = range_utc;
     return local;
   }
   function d3_time_interval_utc(method) {
     return function(date, k) {
       try {
         d3_date = d3_date_utc;
         var utc = new d3_date_utc();
         utc._ = date;
         return method(utc, k)._;
       } finally {
         d3_date = Date;
       }
     };
   }
   d3_time.year = d3_time_interval(function(date) {
     date = d3_time.day(date);
     date.setMonth(0, 1);
     return date;
   }, function(date, offset) {
     date.setFullYear(date.getFullYear() + offset);
   }, function(date) {
     return date.getFullYear();
   });
   d3_time.years = d3_time.year.range;
   d3_time.years.utc = d3_time.year.utc.range;
   d3_time.day = d3_time_interval(function(date) {
     var day = new d3_date(2e3, 0);
     day.setFullYear(date.getFullYear(), date.getMonth(), date.getDate());
     return day;
   }, function(date, offset) {
     date.setDate(date.getDate() + offset);
   }, function(date) {
     return date.getDate() - 1;
   });
   d3_time.days = d3_time.day.range;
   d3_time.days.utc = d3_time.day.utc.range;
   d3_time.dayOfYear = function(date) {
     var year = d3_time.year(date);
     return Math.floor((date - year - (date.getTimezoneOffset() - year.getTimezoneOffset()) * 6e4) / 864e5);
   };
   [ "sunday", "monday", "tuesday", "wednesday", "thursday", "friday", "saturday" ].forEach(function(day, i) {
     i = 7 - i;
     var interval = d3_time[day] = d3_time_interval(function(date) {
       (date = d3_time.day(date)).setDate(date.getDate() - (date.getDay() + i) % 7);
       return date;
     }, function(date, offset) {
       date.setDate(date.getDate() + Math.floor(offset) * 7);
     }, function(date) {
       var day = d3_time.year(date).getDay();
       return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7) - (day !== i);
     });
     d3_time[day + "s"] = interval.range;
     d3_time[day + "s"].utc = interval.utc.range;
     d3_time[day + "OfYear"] = function(date) {
       var day = d3_time.year(date).getDay();
       return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7);
     };
   });
   d3_time.week = d3_time.sunday;
   d3_time.weeks = d3_time.sunday.range;
   d3_time.weeks.utc = d3_time.sunday.utc.range;
   d3_time.weekOfYear = d3_time.sundayOfYear;
   function d3_locale_timeFormat(locale) {
     var locale_dateTime = locale.dateTime, locale_date = locale.date, locale_time = locale.time, locale_periods = locale.periods, locale_days = locale.days, locale_shortDays = locale.shortDays, locale_months = locale.months, locale_shortMonths = locale.shortMonths;
     function d3_time_format(template) {
       var n = template.length;
       function format(date) {
         var string = [], i = -1, j = 0, c, p, f;
         while (++i < n) {
           if (template.charCodeAt(i) === 37) {
             string.push(template.substring(j, i));
             if ((p = d3_time_formatPads[c = template.charAt(++i)]) != null) c = template.charAt(++i);
             if (f = d3_time_formats[c]) c = f(date, p == null ? c === "e" ? " " : "0" : p);
             string.push(c);
             j = i + 1;
           }
         }
         string.push(template.substring(j, i));
         return string.join("");
       }
       format.parse = function(string) {
         var d = {
           y: 1900,
           m: 0,
           d: 1,
           H: 0,
           M: 0,
           S: 0,
           L: 0,
           Z: null
         }, i = d3_time_parse(d, template, string, 0);
         if (i != string.length) return null;
         if ("p" in d) d.H = d.H % 12 + d.p * 12;
         var localZ = d.Z != null && d3_date !== d3_date_utc, date = new (localZ ? d3_date_utc : d3_date)();
         if ("j" in d) date.setFullYear(d.y, 0, d.j); else if ("w" in d && ("W" in d || "U" in d)) {
           date.setFullYear(d.y, 0, 1);
           date.setFullYear(d.y, 0, "W" in d ? (d.w + 6) % 7 + d.W * 7 - (date.getDay() + 5) % 7 : d.w + d.U * 7 - (date.getDay() + 6) % 7);
         } else date.setFullYear(d.y, d.m, d.d);
         date.setHours(d.H + Math.floor(d.Z / 100), d.M + d.Z % 100, d.S, d.L);
         return localZ ? date._ : date;
       };
       format.toString = function() {
         return template;
       };
       return format;
     }
     function d3_time_parse(date, template, string, j) {
       var c, p, t, i = 0, n = template.length, m = string.length;
       while (i < n) {
         if (j >= m) return -1;
         c = template.charCodeAt(i++);
         if (c === 37) {
           t = template.charAt(i++);
           p = d3_time_parsers[t in d3_time_formatPads ? template.charAt(i++) : t];
           if (!p || (j = p(date, string, j)) < 0) return -1;
         } else if (c != string.charCodeAt(j++)) {
           return -1;
         }
       }
       return j;
     }
     d3_time_format.utc = function(template) {
       var local = d3_time_format(template);
       function format(date) {
         try {
           d3_date = d3_date_utc;
           var utc = new d3_date();
           utc._ = date;
           return local(utc);
         } finally {
           d3_date = Date;
         }
       }
       format.parse = function(string) {
         try {
           d3_date = d3_date_utc;
           var date = local.parse(string);
           return date && date._;
         } finally {
           d3_date = Date;
         }
       };
       format.toString = local.toString;
       return format;
     };
     d3_time_format.multi = d3_time_format.utc.multi = d3_time_formatMulti;
     var d3_time_periodLookup = d3.map(), d3_time_dayRe = d3_time_formatRe(locale_days), d3_time_dayLookup = d3_time_formatLookup(locale_days), d3_time_dayAbbrevRe = d3_time_formatRe(locale_shortDays), d3_time_dayAbbrevLookup = d3_time_formatLookup(locale_shortDays), d3_time_monthRe = d3_time_formatRe(locale_months), d3_time_monthLookup = d3_time_formatLookup(locale_months), d3_time_monthAbbrevRe = d3_time_formatRe(locale_shortMonths), d3_time_monthAbbrevLookup = d3_time_formatLookup(locale_shortMonths);
     locale_periods.forEach(function(p, i) {
       d3_time_periodLookup.set(p.toLowerCase(), i);
     });
     var d3_time_formats = {
       a: function(d) {
         return locale_shortDays[d.getDay()];
       },
       A: function(d) {
         return locale_days[d.getDay()];
       },
       b: function(d) {
         return locale_shortMonths[d.getMonth()];
       },
       B: function(d) {
         return locale_months[d.getMonth()];
       },
       c: d3_time_format(locale_dateTime),
       d: function(d, p) {
         return d3_time_formatPad(d.getDate(), p, 2);
       },
       e: function(d, p) {
         return d3_time_formatPad(d.getDate(), p, 2);
       },
       H: function(d, p) {
         return d3_time_formatPad(d.getHours(), p, 2);
       },
       I: function(d, p) {
         return d3_time_formatPad(d.getHours() % 12 || 12, p, 2);
       },
       j: function(d, p) {
         return d3_time_formatPad(1 + d3_time.dayOfYear(d), p, 3);
       },
       L: function(d, p) {
         return d3_time_formatPad(d.getMilliseconds(), p, 3);
       },
       m: function(d, p) {
         return d3_time_formatPad(d.getMonth() + 1, p, 2);
       },
       M: function(d, p) {
         return d3_time_formatPad(d.getMinutes(), p, 2);
       },
       p: function(d) {
         return locale_periods[+(d.getHours() >= 12)];
       },
       S: function(d, p) {
         return d3_time_formatPad(d.getSeconds(), p, 2);
       },
       U: function(d, p) {
         return d3_time_formatPad(d3_time.sundayOfYear(d), p, 2);
       },
       w: function(d) {
         return d.getDay();
       },
       W: function(d, p) {
         return d3_time_formatPad(d3_time.mondayOfYear(d), p, 2);
       },
       x: d3_time_format(locale_date),
       X: d3_time_format(locale_time),
       y: function(d, p) {
         return d3_time_formatPad(d.getFullYear() % 100, p, 2);
       },
       Y: function(d, p) {
         return d3_time_formatPad(d.getFullYear() % 1e4, p, 4);
       },
       Z: d3_time_zone,
       "%": function() {
         return "%";
       }
     };
     var d3_time_parsers = {
       a: d3_time_parseWeekdayAbbrev,
       A: d3_time_parseWeekday,
       b: d3_time_parseMonthAbbrev,
       B: d3_time_parseMonth,
       c: d3_time_parseLocaleFull,
       d: d3_time_parseDay,
       e: d3_time_parseDay,
       H: d3_time_parseHour24,
       I: d3_time_parseHour24,
       j: d3_time_parseDayOfYear,
       L: d3_time_parseMilliseconds,
       m: d3_time_parseMonthNumber,
       M: d3_time_parseMinutes,
       p: d3_time_parseAmPm,
       S: d3_time_parseSeconds,
       U: d3_time_parseWeekNumberSunday,
       w: d3_time_parseWeekdayNumber,
       W: d3_time_parseWeekNumberMonday,
       x: d3_time_parseLocaleDate,
       X: d3_time_parseLocaleTime,
       y: d3_time_parseYear,
       Y: d3_time_parseFullYear,
       Z: d3_time_parseZone,
       "%": d3_time_parseLiteralPercent
     };
     function d3_time_parseWeekdayAbbrev(date, string, i) {
       d3_time_dayAbbrevRe.lastIndex = 0;
       var n = d3_time_dayAbbrevRe.exec(string.substring(i));
       return n ? (date.w = d3_time_dayAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
     }
     function d3_time_parseWeekday(date, string, i) {
       d3_time_dayRe.lastIndex = 0;
       var n = d3_time_dayRe.exec(string.substring(i));
       return n ? (date.w = d3_time_dayLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
     }
     function d3_time_parseMonthAbbrev(date, string, i) {
       d3_time_monthAbbrevRe.lastIndex = 0;
       var n = d3_time_monthAbbrevRe.exec(string.substring(i));
       return n ? (date.m = d3_time_monthAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
     }
     function d3_time_parseMonth(date, string, i) {
       d3_time_monthRe.lastIndex = 0;
       var n = d3_time_monthRe.exec(string.substring(i));
       return n ? (date.m = d3_time_monthLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
     }
     function d3_time_parseLocaleFull(date, string, i) {
       return d3_time_parse(date, d3_time_formats.c.toString(), string, i);
     }
     function d3_time_parseLocaleDate(date, string, i) {
       return d3_time_parse(date, d3_time_formats.x.toString(), string, i);
     }
     function d3_time_parseLocaleTime(date, string, i) {
       return d3_time_parse(date, d3_time_formats.X.toString(), string, i);
     }
     function d3_time_parseAmPm(date, string, i) {
       var n = d3_time_periodLookup.get(string.substring(i, i += 2).toLowerCase());
       return n == null ? -1 : (date.p = n, i);
     }
     return d3_time_format;
   }
   var d3_time_formatPads = {
     "-": "",
     _: " ",
     "0": "0"
   }, d3_time_numberRe = /^\s*\d+/, d3_time_percentRe = /^%/;
   function d3_time_formatPad(value, fill, width) {
     var sign = value < 0 ? "-" : "", string = (sign ? -value : value) + "", length = string.length;
     return sign + (length < width ? new Array(width - length + 1).join(fill) + string : string);
   }
   function d3_time_formatRe(names) {
     return new RegExp("^(?:" + names.map(d3.requote).join("|") + ")", "i");
   }
   function d3_time_formatLookup(names) {
     var map = new d3_Map(), i = -1, n = names.length;
     while (++i < n) map.set(names[i].toLowerCase(), i);
     return map;
   }
   function d3_time_parseWeekdayNumber(date, string, i) {
     d3_time_numberRe.lastIndex = 0;
     var n = d3_time_numberRe.exec(string.substring(i, i + 1));
     return n ? (date.w = +n[0], i + n[0].length) : -1;
   }
   function d3_time_parseWeekNumberSunday(date, string, i) {
     d3_time_numberRe.lastIndex = 0;
     var n = d3_time_numberRe.exec(string.substring(i));
     return n ? (date.U = +n[0], i + n[0].length) : -1;
   }
   function d3_time_parseWeekNumberMonday(date, string, i) {
     d3_time_numberRe.lastIndex = 0;
     var n = d3_time_numberRe.exec(string.substring(i));
     return n ? (date.W = +n[0], i + n[0].length) : -1;
   }
   function d3_time_parseFullYear(date, string, i) {
     d3_time_numberRe.lastIndex = 0;
     var n = d3_time_numberRe.exec(string.substring(i, i + 4));
     return n ? (date.y = +n[0], i + n[0].length) : -1;
   }
   function d3_time_parseYear(date, string, i) {
     d3_time_numberRe.lastIndex = 0;
     var n = d3_time_numberRe.exec(string.substring(i, i + 2));
     return n ? (date.y = d3_time_expandYear(+n[0]), i + n[0].length) : -1;
   }
   function d3_time_parseZone(date, string, i) {
     return /^[+-]\d{4}$/.test(string = string.substring(i, i + 5)) ? (date.Z = +string,
     i + 5) : -1;
   }
   function d3_time_expandYear(d) {
     return d + (d > 68 ? 1900 : 2e3);
   }
   function d3_time_parseMonthNumber(date, string, i) {
     d3_time_numberRe.lastIndex = 0;
     var n = d3_time_numberRe.exec(string.substring(i, i + 2));
     return n ? (date.m = n[0] - 1, i + n[0].length) : -1;
   }
   function d3_time_parseDay(date, string, i) {
     d3_time_numberRe.lastIndex = 0;
     var n = d3_time_numberRe.exec(string.substring(i, i + 2));
     return n ? (date.d = +n[0], i + n[0].length) : -1;
   }
   function d3_time_parseDayOfYear(date, string, i) {
     d3_time_numberRe.lastIndex = 0;
     var n = d3_time_numberRe.exec(string.substring(i, i + 3));
     return n ? (date.j = +n[0], i + n[0].length) : -1;
   }
   function d3_time_parseHour24(date, string, i) {
     d3_time_numberRe.lastIndex = 0;
     var n = d3_time_numberRe.exec(string.substring(i, i + 2));
     return n ? (date.H = +n[0], i + n[0].length) : -1;
   }
   function d3_time_parseMinutes(date, string, i) {
     d3_time_numberRe.lastIndex = 0;
     var n = d3_time_numberRe.exec(string.substring(i, i + 2));
     return n ? (date.M = +n[0], i + n[0].length) : -1;
   }
   function d3_time_parseSeconds(date, string, i) {
     d3_time_numberRe.lastIndex = 0;
     var n = d3_time_numberRe.exec(string.substring(i, i + 2));
     return n ? (date.S = +n[0], i + n[0].length) : -1;
   }
   function d3_time_parseMilliseconds(date, string, i) {
     d3_time_numberRe.lastIndex = 0;
     var n = d3_time_numberRe.exec(string.substring(i, i + 3));
     return n ? (date.L = +n[0], i + n[0].length) : -1;
   }
   function d3_time_zone(d) {
     var z = d.getTimezoneOffset(), zs = z > 0 ? "-" : "+", zh = ~~(abs(z) / 60), zm = abs(z) % 60;
     return zs + d3_time_formatPad(zh, "0", 2) + d3_time_formatPad(zm, "0", 2);
   }
   function d3_time_parseLiteralPercent(date, string, i) {
     d3_time_percentRe.lastIndex = 0;
     var n = d3_time_percentRe.exec(string.substring(i, i + 1));
     return n ? i + n[0].length : -1;
   }
   function d3_time_formatMulti(formats) {
     var n = formats.length, i = -1;
     while (++i < n) formats[i][0] = this(formats[i][0]);
     return function(date) {
       var i = 0, f = formats[i];
       while (!f[1](date)) f = formats[++i];
       return f[0](date);
     };
   }
   d3.locale = function(locale) {
     return {
       numberFormat: d3_locale_numberFormat(locale),
       timeFormat: d3_locale_timeFormat(locale)
     };
   };
   var d3_locale_enUS = d3.locale({
     decimal: ".",
     thousands: ",",
     grouping: [ 3 ],
     currency: [ "$", "" ],
     dateTime: "%a %b %e %X %Y",
     date: "%m/%d/%Y",
     time: "%H:%M:%S",
     periods: [ "AM", "PM" ],
     days: [ "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" ],
     shortDays: [ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" ],
     months: [ "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" ],
     shortMonths: [ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" ]
   });
   d3.format = d3_locale_enUS.numberFormat;
   d3.geo = {};
   function d3_adder() {}
   d3_adder.prototype = {
     s: 0,
     t: 0,
     add: function(y) {
       d3_adderSum(y, this.t, d3_adderTemp);
       d3_adderSum(d3_adderTemp.s, this.s, this);
       if (this.s) this.t += d3_adderTemp.t; else this.s = d3_adderTemp.t;
     },
     reset: function() {
       this.s = this.t = 0;
     },
     valueOf: function() {
       return this.s;
     }
   };
   var d3_adderTemp = new d3_adder();
   function d3_adderSum(a, b, o) {
     var x = o.s = a + b, bv = x - a, av = x - bv;
     o.t = a - av + (b - bv);
   }
   d3.geo.stream = function(object, listener) {
     if (object && d3_geo_streamObjectType.hasOwnProperty(object.type)) {
       d3_geo_streamObjectType[object.type](object, listener);
     } else {
       d3_geo_streamGeometry(object, listener);
     }
   };
   function d3_geo_streamGeometry(geometry, listener) {
     if (geometry && d3_geo_streamGeometryType.hasOwnProperty(geometry.type)) {
       d3_geo_streamGeometryType[geometry.type](geometry, listener);
     }
   }
   var d3_geo_streamObjectType = {
     Feature: function(feature, listener) {
       d3_geo_streamGeometry(feature.geometry, listener);
     },
     FeatureCollection: function(object, listener) {
       var features = object.features, i = -1, n = features.length;
       while (++i < n) d3_geo_streamGeometry(features[i].geometry, listener);
     }
   };
   var d3_geo_streamGeometryType = {
     Sphere: function(object, listener) {
       listener.sphere();
     },
     Point: function(object, listener) {
       object = object.coordinates;
       listener.point(object[0], object[1], object[2]);
     },
     MultiPoint: function(object, listener) {
       var coordinates = object.coordinates, i = -1, n = coordinates.length;
       while (++i < n) object = coordinates[i], listener.point(object[0], object[1], object[2]);
     },
     LineString: function(object, listener) {
       d3_geo_streamLine(object.coordinates, listener, 0);
     },
     MultiLineString: function(object, listener) {
       var coordinates = object.coordinates, i = -1, n = coordinates.length;
       while (++i < n) d3_geo_streamLine(coordinates[i], listener, 0);
     },
     Polygon: function(object, listener) {
       d3_geo_streamPolygon(object.coordinates, listener);
     },
     MultiPolygon: function(object, listener) {
       var coordinates = object.coordinates, i = -1, n = coordinates.length;
       while (++i < n) d3_geo_streamPolygon(coordinates[i], listener);
     },
     GeometryCollection: function(object, listener) {
       var geometries = object.geometries, i = -1, n = geometries.length;
       while (++i < n) d3_geo_streamGeometry(geometries[i], listener);
     }
   };
   function d3_geo_streamLine(coordinates, listener, closed) {
     var i = -1, n = coordinates.length - closed, coordinate;
     listener.lineStart();
     while (++i < n) coordinate = coordinates[i], listener.point(coordinate[0], coordinate[1], coordinate[2]);
     listener.lineEnd();
   }
   function d3_geo_streamPolygon(coordinates, listener) {
     var i = -1, n = coordinates.length;
     listener.polygonStart();
     while (++i < n) d3_geo_streamLine(coordinates[i], listener, 1);
     listener.polygonEnd();
   }
   d3.geo.area = function(object) {
     d3_geo_areaSum = 0;
     d3.geo.stream(object, d3_geo_area);
     return d3_geo_areaSum;
   };
   var d3_geo_areaSum, d3_geo_areaRingSum = new d3_adder();
   var d3_geo_area = {
     sphere: function() {
       d3_geo_areaSum += 4 * π;
     },
     point: d3_noop,
     lineStart: d3_noop,
     lineEnd: d3_noop,
     polygonStart: function() {
       d3_geo_areaRingSum.reset();
       d3_geo_area.lineStart = d3_geo_areaRingStart;
     },
     polygonEnd: function() {
       var area = 2 * d3_geo_areaRingSum;
       d3_geo_areaSum += area < 0 ? 4 * π + area : area;
       d3_geo_area.lineStart = d3_geo_area.lineEnd = d3_geo_area.point = d3_noop;
     }
   };
   function d3_geo_areaRingStart() {
     var λ00, φ00, λ0, cosφ0, sinφ0;
     d3_geo_area.point = function(λ, φ) {
       d3_geo_area.point = nextPoint;
       λ0 = (λ00 = λ) * d3_radians, cosφ0 = Math.cos(φ = (φ00 = φ) * d3_radians / 2 + π / 4),
       sinφ0 = Math.sin(φ);
     };
     function nextPoint(λ, φ) {
       λ *= d3_radians;
       φ = φ * d3_radians / 2 + π / 4;
       var dλ = λ - λ0, cosφ = Math.cos(φ), sinφ = Math.sin(φ), k = sinφ0 * sinφ, u = cosφ0 * cosφ + k * Math.cos(dλ), v = k * Math.sin(dλ);
       d3_geo_areaRingSum.add(Math.atan2(v, u));
       λ0 = λ, cosφ0 = cosφ, sinφ0 = sinφ;
     }
     d3_geo_area.lineEnd = function() {
       nextPoint(λ00, φ00);
     };
   }
   function d3_geo_cartesian(spherical) {
     var λ = spherical[0], φ = spherical[1], cosφ = Math.cos(φ);
     return [ cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ) ];
   }
   function d3_geo_cartesianDot(a, b) {
     return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
   }
   function d3_geo_cartesianCross(a, b) {
     return [ a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0] ];
   }
   function d3_geo_cartesianAdd(a, b) {
     a[0] += b[0];
     a[1] += b[1];
     a[2] += b[2];
   }
   function d3_geo_cartesianScale(vector, k) {
     return [ vector[0] * k, vector[1] * k, vector[2] * k ];
   }
   function d3_geo_cartesianNormalize(d) {
     var l = Math.sqrt(d[0] * d[0] + d[1] * d[1] + d[2] * d[2]);
     d[0] /= l;
     d[1] /= l;
     d[2] /= l;
   }
   function d3_geo_spherical(cartesian) {
     return [ Math.atan2(cartesian[1], cartesian[0]), d3_asin(cartesian[2]) ];
   }
   function d3_geo_sphericalEqual(a, b) {
     return abs(a[0] - b[0]) < ε && abs(a[1] - b[1]) < ε;
   }
   d3.geo.bounds = function() {
     var λ0, φ0, λ1, φ1, λ_, λ__, φ__, p0, dλSum, ranges, range;
     var bound = {
       point: point,
       lineStart: lineStart,
       lineEnd: lineEnd,
       polygonStart: function() {
         bound.point = ringPoint;
         bound.lineStart = ringStart;
         bound.lineEnd = ringEnd;
         dλSum = 0;
         d3_geo_area.polygonStart();
       },
       polygonEnd: function() {
         d3_geo_area.polygonEnd();
         bound.point = point;
         bound.lineStart = lineStart;
         bound.lineEnd = lineEnd;
         if (d3_geo_areaRingSum < 0) λ0 = -(λ1 = 180), φ0 = -(φ1 = 90); else if (dλSum > ε) φ1 = 90; else if (dλSum < -ε) φ0 = -90;
         range[0] = λ0, range[1] = λ1;
       }
     };
     function point(λ, φ) {
       ranges.push(range = [ λ0 = λ, λ1 = λ ]);
       if (φ < φ0) φ0 = φ;
       if (φ > φ1) φ1 = φ;
     }
     function linePoint(λ, φ) {
       var p = d3_geo_cartesian([ λ * d3_radians, φ * d3_radians ]);
       if (p0) {
         var normal = d3_geo_cartesianCross(p0, p), equatorial = [ normal[1], -normal[0], 0 ], inflection = d3_geo_cartesianCross(equatorial, normal);
         d3_geo_cartesianNormalize(inflection);
         inflection = d3_geo_spherical(inflection);
         var dλ = λ - λ_, s = dλ > 0 ? 1 : -1, λi = inflection[0] * d3_degrees * s, antimeridian = abs(dλ) > 180;
         if (antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
           var φi = inflection[1] * d3_degrees;
           if (φi > φ1) φ1 = φi;
         } else if (λi = (λi + 360) % 360 - 180, antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
           var φi = -inflection[1] * d3_degrees;
           if (φi < φ0) φ0 = φi;
         } else {
           if (φ < φ0) φ0 = φ;
           if (φ > φ1) φ1 = φ;
         }
         if (antimeridian) {
           if (λ < λ_) {
             if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
           } else {
             if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
           }
         } else {
           if (λ1 >= λ0) {
             if (λ < λ0) λ0 = λ;
             if (λ > λ1) λ1 = λ;
           } else {
             if (λ > λ_) {
               if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
             } else {
               if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
             }
           }
         }
       } else {
         point(λ, φ);
       }
       p0 = p, λ_ = λ;
     }
     function lineStart() {
       bound.point = linePoint;
     }
     function lineEnd() {
       range[0] = λ0, range[1] = λ1;
       bound.point = point;
       p0 = null;
     }
     function ringPoint(λ, φ) {
       if (p0) {
         var dλ = λ - λ_;
         dλSum += abs(dλ) > 180 ? dλ + (dλ > 0 ? 360 : -360) : dλ;
       } else λ__ = λ, φ__ = φ;
       d3_geo_area.point(λ, φ);
       linePoint(λ, φ);
     }
     function ringStart() {
       d3_geo_area.lineStart();
     }
     function ringEnd() {
       ringPoint(λ__, φ__);
       d3_geo_area.lineEnd();
       if (abs(dλSum) > ε) λ0 = -(λ1 = 180);
       range[0] = λ0, range[1] = λ1;
       p0 = null;
     }
     function angle(λ0, λ1) {
       return (λ1 -= λ0) < 0 ? λ1 + 360 : λ1;
     }
     function compareRanges(a, b) {
       return a[0] - b[0];
     }
     function withinRange(x, range) {
       return range[0] <= range[1] ? range[0] <= x && x <= range[1] : x < range[0] || range[1] < x;
     }
     return function(feature) {
       φ1 = λ1 = -(λ0 = φ0 = Infinity);
       ranges = [];
       d3.geo.stream(feature, bound);
       var n = ranges.length;
       if (n) {
         ranges.sort(compareRanges);
         for (var i = 1, a = ranges[0], b, merged = [ a ]; i < n; ++i) {
           b = ranges[i];
           if (withinRange(b[0], a) || withinRange(b[1], a)) {
             if (angle(a[0], b[1]) > angle(a[0], a[1])) a[1] = b[1];
             if (angle(b[0], a[1]) > angle(a[0], a[1])) a[0] = b[0];
           } else {
             merged.push(a = b);
           }
         }
         var best = -Infinity, dλ;
         for (var n = merged.length - 1, i = 0, a = merged[n], b; i <= n; a = b, ++i) {
           b = merged[i];
           if ((dλ = angle(a[1], b[0])) > best) best = dλ, λ0 = b[0], λ1 = a[1];
         }
       }
       ranges = range = null;
       return λ0 === Infinity || φ0 === Infinity ? [ [ NaN, NaN ], [ NaN, NaN ] ] : [ [ λ0, φ0 ], [ λ1, φ1 ] ];
     };
   }();
   d3.geo.centroid = function(object) {
     d3_geo_centroidW0 = d3_geo_centroidW1 = d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
     d3.geo.stream(object, d3_geo_centroid);
     var x = d3_geo_centroidX2, y = d3_geo_centroidY2, z = d3_geo_centroidZ2, m = x * x + y * y + z * z;
     if (m < ε2) {
       x = d3_geo_centroidX1, y = d3_geo_centroidY1, z = d3_geo_centroidZ1;
       if (d3_geo_centroidW1 < ε) x = d3_geo_centroidX0, y = d3_geo_centroidY0, z = d3_geo_centroidZ0;
       m = x * x + y * y + z * z;
       if (m < ε2) return [ NaN, NaN ];
     }
     return [ Math.atan2(y, x) * d3_degrees, d3_asin(z / Math.sqrt(m)) * d3_degrees ];
   };
   var d3_geo_centroidW0, d3_geo_centroidW1, d3_geo_centroidX0, d3_geo_centroidY0, d3_geo_centroidZ0, d3_geo_centroidX1, d3_geo_centroidY1, d3_geo_centroidZ1, d3_geo_centroidX2, d3_geo_centroidY2, d3_geo_centroidZ2;
   var d3_geo_centroid = {
     sphere: d3_noop,
     point: d3_geo_centroidPoint,
     lineStart: d3_geo_centroidLineStart,
     lineEnd: d3_geo_centroidLineEnd,
     polygonStart: function() {
       d3_geo_centroid.lineStart = d3_geo_centroidRingStart;
     },
     polygonEnd: function() {
       d3_geo_centroid.lineStart = d3_geo_centroidLineStart;
     }
   };
   function d3_geo_centroidPoint(λ, φ) {
     λ *= d3_radians;
     var cosφ = Math.cos(φ *= d3_radians);
     d3_geo_centroidPointXYZ(cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ));
   }
   function d3_geo_centroidPointXYZ(x, y, z) {
     ++d3_geo_centroidW0;
     d3_geo_centroidX0 += (x - d3_geo_centroidX0) / d3_geo_centroidW0;
     d3_geo_centroidY0 += (y - d3_geo_centroidY0) / d3_geo_centroidW0;
     d3_geo_centroidZ0 += (z - d3_geo_centroidZ0) / d3_geo_centroidW0;
   }
   function d3_geo_centroidLineStart() {
     var x0, y0, z0;
     d3_geo_centroid.point = function(λ, φ) {
       λ *= d3_radians;
       var cosφ = Math.cos(φ *= d3_radians);
       x0 = cosφ * Math.cos(λ);
       y0 = cosφ * Math.sin(λ);
       z0 = Math.sin(φ);
       d3_geo_centroid.point = nextPoint;
       d3_geo_centroidPointXYZ(x0, y0, z0);
     };
     function nextPoint(λ, φ) {
       λ *= d3_radians;
       var cosφ = Math.cos(φ *= d3_radians), x = cosφ * Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), w = Math.atan2(Math.sqrt((w = y0 * z - z0 * y) * w + (w = z0 * x - x0 * z) * w + (w = x0 * y - y0 * x) * w), x0 * x + y0 * y + z0 * z);
       d3_geo_centroidW1 += w;
       d3_geo_centroidX1 += w * (x0 + (x0 = x));
       d3_geo_centroidY1 += w * (y0 + (y0 = y));
       d3_geo_centroidZ1 += w * (z0 + (z0 = z));
       d3_geo_centroidPointXYZ(x0, y0, z0);
     }
   }
   function d3_geo_centroidLineEnd() {
     d3_geo_centroid.point = d3_geo_centroidPoint;
   }
   function d3_geo_centroidRingStart() {
     var λ00, φ00, x0, y0, z0;
     d3_geo_centroid.point = function(λ, φ) {
       λ00 = λ, φ00 = φ;
       d3_geo_centroid.point = nextPoint;
       λ *= d3_radians;
       var cosφ = Math.cos(φ *= d3_radians);
       x0 = cosφ * Math.cos(λ);
       y0 = cosφ * Math.sin(λ);
       z0 = Math.sin(φ);
       d3_geo_centroidPointXYZ(x0, y0, z0);
     };
     d3_geo_centroid.lineEnd = function() {
       nextPoint(λ00, φ00);
       d3_geo_centroid.lineEnd = d3_geo_centroidLineEnd;
       d3_geo_centroid.point = d3_geo_centroidPoint;
     };
     function nextPoint(λ, φ) {
       λ *= d3_radians;
       var cosφ = Math.cos(φ *= d3_radians), x = cosφ * Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), cx = y0 * z - z0 * y, cy = z0 * x - x0 * z, cz = x0 * y - y0 * x, m = Math.sqrt(cx * cx + cy * cy + cz * cz), u = x0 * x + y0 * y + z0 * z, v = m && -d3_acos(u) / m, w = Math.atan2(m, u);
       d3_geo_centroidX2 += v * cx;
       d3_geo_centroidY2 += v * cy;
       d3_geo_centroidZ2 += v * cz;
       d3_geo_centroidW1 += w;
       d3_geo_centroidX1 += w * (x0 + (x0 = x));
       d3_geo_centroidY1 += w * (y0 + (y0 = y));
       d3_geo_centroidZ1 += w * (z0 + (z0 = z));
       d3_geo_centroidPointXYZ(x0, y0, z0);
     }
   }
   function d3_true() {
     return true;
   }
   function d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener) {
     var subject = [], clip = [];
     segments.forEach(function(segment) {
       if ((n = segment.length - 1) <= 0) return;
       var n, p0 = segment[0], p1 = segment[n];
       if (d3_geo_sphericalEqual(p0, p1)) {
         listener.lineStart();
         for (var i = 0; i < n; ++i) listener.point((p0 = segment[i])[0], p0[1]);
         listener.lineEnd();
         return;
       }
       var a = new d3_geo_clipPolygonIntersection(p0, segment, null, true), b = new d3_geo_clipPolygonIntersection(p0, null, a, false);
       a.o = b;
       subject.push(a);
       clip.push(b);
       a = new d3_geo_clipPolygonIntersection(p1, segment, null, false);
       b = new d3_geo_clipPolygonIntersection(p1, null, a, true);
       a.o = b;
       subject.push(a);
       clip.push(b);
     });
     clip.sort(compare);
     d3_geo_clipPolygonLinkCircular(subject);
     d3_geo_clipPolygonLinkCircular(clip);
     if (!subject.length) return;
     for (var i = 0, entry = clipStartInside, n = clip.length; i < n; ++i) {
       clip[i].e = entry = !entry;
     }
     var start = subject[0], points, point;
     while (1) {
       var current = start, isSubject = true;
       while (current.v) if ((current = current.n) === start) return;
       points = current.z;
       listener.lineStart();
       do {
         current.v = current.o.v = true;
         if (current.e) {
           if (isSubject) {
             for (var i = 0, n = points.length; i < n; ++i) listener.point((point = points[i])[0], point[1]);
           } else {
             interpolate(current.x, current.n.x, 1, listener);
           }
           current = current.n;
         } else {
           if (isSubject) {
             points = current.p.z;
             for (var i = points.length - 1; i >= 0; --i) listener.point((point = points[i])[0], point[1]);
           } else {
             interpolate(current.x, current.p.x, -1, listener);
           }
           current = current.p;
         }
         current = current.o;
         points = current.z;
         isSubject = !isSubject;
       } while (!current.v);
       listener.lineEnd();
     }
   }
   function d3_geo_clipPolygonLinkCircular(array) {
     if (!(n = array.length)) return;
     var n, i = 0, a = array[0], b;
     while (++i < n) {
       a.n = b = array[i];
       b.p = a;
       a = b;
     }
     a.n = b = array[0];
     b.p = a;
   }
   function d3_geo_clipPolygonIntersection(point, points, other, entry) {
     this.x = point;
     this.z = points;
     this.o = other;
     this.e = entry;
     this.v = false;
     this.n = this.p = null;
   }
   function d3_geo_clip(pointVisible, clipLine, interpolate, clipStart) {
     return function(rotate, listener) {
       var line = clipLine(listener), rotatedClipStart = rotate.invert(clipStart[0], clipStart[1]);
       var clip = {
         point: point,
         lineStart: lineStart,
         lineEnd: lineEnd,
         polygonStart: function() {
           clip.point = pointRing;
           clip.lineStart = ringStart;
           clip.lineEnd = ringEnd;
           segments = [];
           polygon = [];
           listener.polygonStart();
         },
         polygonEnd: function() {
           clip.point = point;
           clip.lineStart = lineStart;
           clip.lineEnd = lineEnd;
           segments = d3.merge(segments);
           var clipStartInside = d3_geo_pointInPolygon(rotatedClipStart, polygon);
           if (segments.length) {
             d3_geo_clipPolygon(segments, d3_geo_clipSort, clipStartInside, interpolate, listener);
           } else if (clipStartInside) {
             listener.lineStart();
             interpolate(null, null, 1, listener);
             listener.lineEnd();
           }
           listener.polygonEnd();
           segments = polygon = null;
         },
         sphere: function() {
           listener.polygonStart();
           listener.lineStart();
           interpolate(null, null, 1, listener);
           listener.lineEnd();
           listener.polygonEnd();
         }
       };
       function point(λ, φ) {
         var point = rotate(λ, φ);
         if (pointVisible(λ = point[0], φ = point[1])) listener.point(λ, φ);
       }
       function pointLine(λ, φ) {
         var point = rotate(λ, φ);
         line.point(point[0], point[1]);
       }
       function lineStart() {
         clip.point = pointLine;
         line.lineStart();
       }
       function lineEnd() {
         clip.point = point;
         line.lineEnd();
       }
       var segments;
       var buffer = d3_geo_clipBufferListener(), ringListener = clipLine(buffer), polygon, ring;
       function pointRing(λ, φ) {
         ring.push([ λ, φ ]);
         var point = rotate(λ, φ);
         ringListener.point(point[0], point[1]);
       }
       function ringStart() {
         ringListener.lineStart();
         ring = [];
       }
       function ringEnd() {
         pointRing(ring[0][0], ring[0][1]);
         ringListener.lineEnd();
         var clean = ringListener.clean(), ringSegments = buffer.buffer(), segment, n = ringSegments.length;
         ring.pop();
         polygon.push(ring);
         ring = null;
         if (!n) return;
         if (clean & 1) {
           segment = ringSegments[0];
           var n = segment.length - 1, i = -1, point;
           listener.lineStart();
           while (++i < n) listener.point((point = segment[i])[0], point[1]);
           listener.lineEnd();
           return;
         }
         if (n > 1 && clean & 2) ringSegments.push(ringSegments.pop().concat(ringSegments.shift()));
         segments.push(ringSegments.filter(d3_geo_clipSegmentLength1));
       }
       return clip;
     };
   }
   function d3_geo_clipSegmentLength1(segment) {
     return segment.length > 1;
   }
   function d3_geo_clipBufferListener() {
     var lines = [], line;
     return {
       lineStart: function() {
         lines.push(line = []);
       },
       point: function(λ, φ) {
         line.push([ λ, φ ]);
       },
       lineEnd: d3_noop,
       buffer: function() {
         var buffer = lines;
         lines = [];
         line = null;
         return buffer;
       },
       rejoin: function() {
         if (lines.length > 1) lines.push(lines.pop().concat(lines.shift()));
       }
     };
   }
   function d3_geo_clipSort(a, b) {
     return ((a = a.x)[0] < 0 ? a[1] - halfπ - ε : halfπ - a[1]) - ((b = b.x)[0] < 0 ? b[1] - halfπ - ε : halfπ - b[1]);
   }
   function d3_geo_pointInPolygon(point, polygon) {
     var meridian = point[0], parallel = point[1], meridianNormal = [ Math.sin(meridian), -Math.cos(meridian), 0 ], polarAngle = 0, winding = 0;
     d3_geo_areaRingSum.reset();
     for (var i = 0, n = polygon.length; i < n; ++i) {
       var ring = polygon[i], m = ring.length;
       if (!m) continue;
       var point0 = ring[0], λ0 = point0[0], φ0 = point0[1] / 2 + π / 4, sinφ0 = Math.sin(φ0), cosφ0 = Math.cos(φ0), j = 1;
       while (true) {
         if (j === m) j = 0;
         point = ring[j];
         var λ = point[0], φ = point[1] / 2 + π / 4, sinφ = Math.sin(φ), cosφ = Math.cos(φ), dλ = λ - λ0, antimeridian = abs(dλ) > π, k = sinφ0 * sinφ;
         d3_geo_areaRingSum.add(Math.atan2(k * Math.sin(dλ), cosφ0 * cosφ + k * Math.cos(dλ)));
         polarAngle += antimeridian ? dλ + (dλ >= 0 ? τ : -τ) : dλ;
         if (antimeridian ^ λ0 >= meridian ^ λ >= meridian) {
           var arc = d3_geo_cartesianCross(d3_geo_cartesian(point0), d3_geo_cartesian(point));
           d3_geo_cartesianNormalize(arc);
           var intersection = d3_geo_cartesianCross(meridianNormal, arc);
           d3_geo_cartesianNormalize(intersection);
           var φarc = (antimeridian ^ dλ >= 0 ? -1 : 1) * d3_asin(intersection[2]);
           if (parallel > φarc || parallel === φarc && (arc[0] || arc[1])) {
             winding += antimeridian ^ dλ >= 0 ? 1 : -1;
           }
         }
         if (!j++) break;
         λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ, point0 = point;
       }
     }
     return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < 0) ^ winding & 1;
   }
   var d3_geo_clipAntimeridian = d3_geo_clip(d3_true, d3_geo_clipAntimeridianLine, d3_geo_clipAntimeridianInterpolate, [ -π, -π / 2 ]);
   function d3_geo_clipAntimeridianLine(listener) {
     var λ0 = NaN, φ0 = NaN, sλ0 = NaN, clean;
     return {
       lineStart: function() {
         listener.lineStart();
         clean = 1;
       },
       point: function(λ1, φ1) {
         var sλ1 = λ1 > 0 ? π : -π, dλ = abs(λ1 - λ0);
         if (abs(dλ - π) < ε) {
           listener.point(λ0, φ0 = (φ0 + φ1) / 2 > 0 ? halfπ : -halfπ);
           listener.point(sλ0, φ0);
           listener.lineEnd();
           listener.lineStart();
           listener.point(sλ1, φ0);
           listener.point(λ1, φ0);
           clean = 0;
         } else if (sλ0 !== sλ1 && dλ >= π) {
           if (abs(λ0 - sλ0) < ε) λ0 -= sλ0 * ε;
           if (abs(λ1 - sλ1) < ε) λ1 -= sλ1 * ε;
           φ0 = d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1);
           listener.point(sλ0, φ0);
           listener.lineEnd();
           listener.lineStart();
           listener.point(sλ1, φ0);
           clean = 0;
         }
         listener.point(λ0 = λ1, φ0 = φ1);
         sλ0 = sλ1;
       },
       lineEnd: function() {
         listener.lineEnd();
         λ0 = φ0 = NaN;
       },
       clean: function() {
         return 2 - clean;
       }
     };
   }
   function d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1) {
     var cosφ0, cosφ1, sinλ0_λ1 = Math.sin(λ0 - λ1);
     return abs(sinλ0_λ1) > ε ? Math.atan((Math.sin(φ0) * (cosφ1 = Math.cos(φ1)) * Math.sin(λ1) - Math.sin(φ1) * (cosφ0 = Math.cos(φ0)) * Math.sin(λ0)) / (cosφ0 * cosφ1 * sinλ0_λ1)) : (φ0 + φ1) / 2;
   }
   function d3_geo_clipAntimeridianInterpolate(from, to, direction, listener) {
     var φ;
     if (from == null) {
       φ = direction * halfπ;
       listener.point(-π, φ);
       listener.point(0, φ);
       listener.point(π, φ);
       listener.point(π, 0);
       listener.point(π, -φ);
       listener.point(0, -φ);
       listener.point(-π, -φ);
       listener.point(-π, 0);
       listener.point(-π, φ);
     } else if (abs(from[0] - to[0]) > ε) {
       var s = from[0] < to[0] ? π : -π;
       φ = direction * s / 2;
       listener.point(-s, φ);
       listener.point(0, φ);
       listener.point(s, φ);
     } else {
       listener.point(to[0], to[1]);
     }
   }
   function d3_geo_clipCircle(radius) {
     var cr = Math.cos(radius), smallRadius = cr > 0, notHemisphere = abs(cr) > ε, interpolate = d3_geo_circleInterpolate(radius, 6 * d3_radians);
     return d3_geo_clip(visible, clipLine, interpolate, smallRadius ? [ 0, -radius ] : [ -π, radius - π ]);
     function visible(λ, φ) {
       return Math.cos(λ) * Math.cos(φ) > cr;
     }
     function clipLine(listener) {
       var point0, c0, v0, v00, clean;
       return {
         lineStart: function() {
           v00 = v0 = false;
           clean = 1;
         },
         point: function(λ, φ) {
           var point1 = [ λ, φ ], point2, v = visible(λ, φ), c = smallRadius ? v ? 0 : code(λ, φ) : v ? code(λ + (λ < 0 ? π : -π), φ) : 0;
           if (!point0 && (v00 = v0 = v)) listener.lineStart();
           if (v !== v0) {
             point2 = intersect(point0, point1);
             if (d3_geo_sphericalEqual(point0, point2) || d3_geo_sphericalEqual(point1, point2)) {
               point1[0] += ε;
               point1[1] += ε;
               v = visible(point1[0], point1[1]);
             }
           }
           if (v !== v0) {
             clean = 0;
             if (v) {
               listener.lineStart();
               point2 = intersect(point1, point0);
               listener.point(point2[0], point2[1]);
             } else {
               point2 = intersect(point0, point1);
               listener.point(point2[0], point2[1]);
               listener.lineEnd();
             }
             point0 = point2;
           } else if (notHemisphere && point0 && smallRadius ^ v) {
             var t;
             if (!(c & c0) && (t = intersect(point1, point0, true))) {
               clean = 0;
               if (smallRadius) {
                 listener.lineStart();
                 listener.point(t[0][0], t[0][1]);
                 listener.point(t[1][0], t[1][1]);
                 listener.lineEnd();
               } else {
                 listener.point(t[1][0], t[1][1]);
                 listener.lineEnd();
                 listener.lineStart();
                 listener.point(t[0][0], t[0][1]);
               }
             }
           }
           if (v && (!point0 || !d3_geo_sphericalEqual(point0, point1))) {
             listener.point(point1[0], point1[1]);
           }
           point0 = point1, v0 = v, c0 = c;
         },
         lineEnd: function() {
           if (v0) listener.lineEnd();
           point0 = null;
         },
         clean: function() {
           return clean | (v00 && v0) << 1;
         }
       };
     }
     function intersect(a, b, two) {
       var pa = d3_geo_cartesian(a), pb = d3_geo_cartesian(b);
       var n1 = [ 1, 0, 0 ], n2 = d3_geo_cartesianCross(pa, pb), n2n2 = d3_geo_cartesianDot(n2, n2), n1n2 = n2[0], determinant = n2n2 - n1n2 * n1n2;
       if (!determinant) return !two && a;
       var c1 = cr * n2n2 / determinant, c2 = -cr * n1n2 / determinant, n1xn2 = d3_geo_cartesianCross(n1, n2), A = d3_geo_cartesianScale(n1, c1), B = d3_geo_cartesianScale(n2, c2);
       d3_geo_cartesianAdd(A, B);
       var u = n1xn2, w = d3_geo_cartesianDot(A, u), uu = d3_geo_cartesianDot(u, u), t2 = w * w - uu * (d3_geo_cartesianDot(A, A) - 1);
       if (t2 < 0) return;
       var t = Math.sqrt(t2), q = d3_geo_cartesianScale(u, (-w - t) / uu);
       d3_geo_cartesianAdd(q, A);
       q = d3_geo_spherical(q);
       if (!two) return q;
       var λ0 = a[0], λ1 = b[0], φ0 = a[1], φ1 = b[1], z;
       if (λ1 < λ0) z = λ0, λ0 = λ1, λ1 = z;
       var δλ = λ1 - λ0, polar = abs(δλ - π) < ε, meridian = polar || δλ < ε;
       if (!polar && φ1 < φ0) z = φ0, φ0 = φ1, φ1 = z;
       if (meridian ? polar ? φ0 + φ1 > 0 ^ q[1] < (abs(q[0] - λ0) < ε ? φ0 : φ1) : φ0 <= q[1] && q[1] <= φ1 : δλ > π ^ (λ0 <= q[0] && q[0] <= λ1)) {
         var q1 = d3_geo_cartesianScale(u, (-w + t) / uu);
         d3_geo_cartesianAdd(q1, A);
         return [ q, d3_geo_spherical(q1) ];
       }
     }
     function code(λ, φ) {
       var r = smallRadius ? radius : π - radius, code = 0;
       if (λ < -r) code |= 1; else if (λ > r) code |= 2;
       if (φ < -r) code |= 4; else if (φ > r) code |= 8;
       return code;
     }
   }
   function d3_geom_clipLine(x0, y0, x1, y1) {
     return function(line) {
       var a = line.a, b = line.b, ax = a.x, ay = a.y, bx = b.x, by = b.y, t0 = 0, t1 = 1, dx = bx - ax, dy = by - ay, r;
       r = x0 - ax;
       if (!dx && r > 0) return;
       r /= dx;
       if (dx < 0) {
         if (r < t0) return;
         if (r < t1) t1 = r;
       } else if (dx > 0) {
         if (r > t1) return;
         if (r > t0) t0 = r;
       }
       r = x1 - ax;
       if (!dx && r < 0) return;
       r /= dx;
       if (dx < 0) {
         if (r > t1) return;
         if (r > t0) t0 = r;
       } else if (dx > 0) {
         if (r < t0) return;
         if (r < t1) t1 = r;
       }
       r = y0 - ay;
       if (!dy && r > 0) return;
       r /= dy;
       if (dy < 0) {
         if (r < t0) return;
         if (r < t1) t1 = r;
       } else if (dy > 0) {
         if (r > t1) return;
         if (r > t0) t0 = r;
       }
       r = y1 - ay;
       if (!dy && r < 0) return;
       r /= dy;
       if (dy < 0) {
         if (r > t1) return;
         if (r > t0) t0 = r;
       } else if (dy > 0) {
         if (r < t0) return;
         if (r < t1) t1 = r;
       }
       if (t0 > 0) line.a = {
         x: ax + t0 * dx,
         y: ay + t0 * dy
       };
       if (t1 < 1) line.b = {
         x: ax + t1 * dx,
         y: ay + t1 * dy
       };
       return line;
     };
   }
   var d3_geo_clipExtentMAX = 1e9;
   d3.geo.clipExtent = function() {
     var x0, y0, x1, y1, stream, clip, clipExtent = {
       stream: function(output) {
         if (stream) stream.valid = false;
         stream = clip(output);
         stream.valid = true;
         return stream;
       },
       extent: function(_) {
         if (!arguments.length) return [ [ x0, y0 ], [ x1, y1 ] ];
         clip = d3_geo_clipExtent(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]);
         if (stream) stream.valid = false, stream = null;
         return clipExtent;
       }
     };
     return clipExtent.extent([ [ 0, 0 ], [ 960, 500 ] ]);
   };
   function d3_geo_clipExtent(x0, y0, x1, y1) {
     return function(listener) {
       var listener_ = listener, bufferListener = d3_geo_clipBufferListener(), clipLine = d3_geom_clipLine(x0, y0, x1, y1), segments, polygon, ring;
       var clip = {
         point: point,
         lineStart: lineStart,
         lineEnd: lineEnd,
         polygonStart: function() {
           listener = bufferListener;
           segments = [];
           polygon = [];
           clean = true;
         },
         polygonEnd: function() {
           listener = listener_;
           segments = d3.merge(segments);
           var clipStartInside = insidePolygon([ x0, y1 ]), inside = clean && clipStartInside, visible = segments.length;
           if (inside || visible) {
             listener.polygonStart();
             if (inside) {
               listener.lineStart();
               interpolate(null, null, 1, listener);
               listener.lineEnd();
             }
             if (visible) {
               d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener);
             }
             listener.polygonEnd();
           }
           segments = polygon = ring = null;
         }
       };
       function insidePolygon(p) {
         var wn = 0, n = polygon.length, y = p[1];
         for (var i = 0; i < n; ++i) {
           for (var j = 1, v = polygon[i], m = v.length, a = v[0], b; j < m; ++j) {
             b = v[j];
             if (a[1] <= y) {
               if (b[1] > y && d3_cross2d(a, b, p) > 0) ++wn;
             } else {
               if (b[1] <= y && d3_cross2d(a, b, p) < 0) --wn;
             }
             a = b;
           }
         }
         return wn !== 0;
       }
       function interpolate(from, to, direction, listener) {
         var a = 0, a1 = 0;
         if (from == null || (a = corner(from, direction)) !== (a1 = corner(to, direction)) || comparePoints(from, to) < 0 ^ direction > 0) {
           do {
             listener.point(a === 0 || a === 3 ? x0 : x1, a > 1 ? y1 : y0);
           } while ((a = (a + direction + 4) % 4) !== a1);
         } else {
           listener.point(to[0], to[1]);
         }
       }
       function pointVisible(x, y) {
         return x0 <= x && x <= x1 && y0 <= y && y <= y1;
       }
       function point(x, y) {
         if (pointVisible(x, y)) listener.point(x, y);
       }
       var x__, y__, v__, x_, y_, v_, first, clean;
       function lineStart() {
         clip.point = linePoint;
         if (polygon) polygon.push(ring = []);
         first = true;
         v_ = false;
         x_ = y_ = NaN;
       }
       function lineEnd() {
         if (segments) {
           linePoint(x__, y__);
           if (v__ && v_) bufferListener.rejoin();
           segments.push(bufferListener.buffer());
         }
         clip.point = point;
         if (v_) listener.lineEnd();
       }
       function linePoint(x, y) {
         x = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, x));
         y = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, y));
         var v = pointVisible(x, y);
         if (polygon) ring.push([ x, y ]);
         if (first) {
           x__ = x, y__ = y, v__ = v;
           first = false;
           if (v) {
             listener.lineStart();
             listener.point(x, y);
           }
         } else {
           if (v && v_) listener.point(x, y); else {
             var l = {
               a: {
                 x: x_,
                 y: y_
               },
               b: {
                 x: x,
                 y: y
               }
             };
             if (clipLine(l)) {
               if (!v_) {
                 listener.lineStart();
                 listener.point(l.a.x, l.a.y);
               }
               listener.point(l.b.x, l.b.y);
               if (!v) listener.lineEnd();
               clean = false;
             } else if (v) {
               listener.lineStart();
               listener.point(x, y);
               clean = false;
             }
           }
         }
         x_ = x, y_ = y, v_ = v;
       }
       return clip;
     };
     function corner(p, direction) {
       return abs(p[0] - x0) < ε ? direction > 0 ? 0 : 3 : abs(p[0] - x1) < ε ? direction > 0 ? 2 : 1 : abs(p[1] - y0) < ε ? direction > 0 ? 1 : 0 : direction > 0 ? 3 : 2;
     }
     function compare(a, b) {
       return comparePoints(a.x, b.x);
     }
     function comparePoints(a, b) {
       var ca = corner(a, 1), cb = corner(b, 1);
       return ca !== cb ? ca - cb : ca === 0 ? b[1] - a[1] : ca === 1 ? a[0] - b[0] : ca === 2 ? a[1] - b[1] : b[0] - a[0];
     }
   }
   function d3_geo_compose(a, b) {
     function compose(x, y) {
       return x = a(x, y), b(x[0], x[1]);
     }
     if (a.invert && b.invert) compose.invert = function(x, y) {
       return x = b.invert(x, y), x && a.invert(x[0], x[1]);
     };
     return compose;
   }
   function d3_geo_conic(projectAt) {
     var φ0 = 0, φ1 = π / 3, m = d3_geo_projectionMutator(projectAt), p = m(φ0, φ1);
     p.parallels = function(_) {
       if (!arguments.length) return [ φ0 / π * 180, φ1 / π * 180 ];
       return m(φ0 = _[0] * π / 180, φ1 = _[1] * π / 180);
     };
     return p;
   }
   function d3_geo_conicEqualArea(φ0, φ1) {
     var sinφ0 = Math.sin(φ0), n = (sinφ0 + Math.sin(φ1)) / 2, C = 1 + sinφ0 * (2 * n - sinφ0), ρ0 = Math.sqrt(C) / n;
     function forward(λ, φ) {
       var ρ = Math.sqrt(C - 2 * n * Math.sin(φ)) / n;
       return [ ρ * Math.sin(λ *= n), ρ0 - ρ * Math.cos(λ) ];
     }
     forward.invert = function(x, y) {
       var ρ0_y = ρ0 - y;
       return [ Math.atan2(x, ρ0_y) / n, d3_asin((C - (x * x + ρ0_y * ρ0_y) * n * n) / (2 * n)) ];
     };
     return forward;
   }
   (d3.geo.conicEqualArea = function() {
     return d3_geo_conic(d3_geo_conicEqualArea);
   }).raw = d3_geo_conicEqualArea;
   d3.geo.albers = function() {
     return d3.geo.conicEqualArea().rotate([ 96, 0 ]).center([ -.6, 38.7 ]).parallels([ 29.5, 45.5 ]).scale(1070);
   };
   d3.geo.albersUsa = function() {
     var lower48 = d3.geo.albers();
     var alaska = d3.geo.conicEqualArea().rotate([ 154, 0 ]).center([ -2, 58.5 ]).parallels([ 55, 65 ]);
     var hawaii = d3.geo.conicEqualArea().rotate([ 157, 0 ]).center([ -3, 19.9 ]).parallels([ 8, 18 ]);
     var point, pointStream = {
       point: function(x, y) {
         point = [ x, y ];
       }
     }, lower48Point, alaskaPoint, hawaiiPoint;
     function albersUsa(coordinates) {
       var x = coordinates[0], y = coordinates[1];
       point = null;
       (lower48Point(x, y), point) || (alaskaPoint(x, y), point) || hawaiiPoint(x, y);
       return point;
     }
     albersUsa.invert = function(coordinates) {
       var k = lower48.scale(), t = lower48.translate(), x = (coordinates[0] - t[0]) / k, y = (coordinates[1] - t[1]) / k;
       return (y >= .12 && y < .234 && x >= -.425 && x < -.214 ? alaska : y >= .166 && y < .234 && x >= -.214 && x < -.115 ? hawaii : lower48).invert(coordinates);
     };
     albersUsa.stream = function(stream) {
       var lower48Stream = lower48.stream(stream), alaskaStream = alaska.stream(stream), hawaiiStream = hawaii.stream(stream);
       return {
         point: function(x, y) {
           lower48Stream.point(x, y);
           alaskaStream.point(x, y);
           hawaiiStream.point(x, y);
         },
         sphere: function() {
           lower48Stream.sphere();
           alaskaStream.sphere();
           hawaiiStream.sphere();
         },
         lineStart: function() {
           lower48Stream.lineStart();
           alaskaStream.lineStart();
           hawaiiStream.lineStart();
         },
         lineEnd: function() {
           lower48Stream.lineEnd();
           alaskaStream.lineEnd();
           hawaiiStream.lineEnd();
         },
         polygonStart: function() {
           lower48Stream.polygonStart();
           alaskaStream.polygonStart();
           hawaiiStream.polygonStart();
         },
         polygonEnd: function() {
           lower48Stream.polygonEnd();
           alaskaStream.polygonEnd();
           hawaiiStream.polygonEnd();
         }
       };
     };
     albersUsa.precision = function(_) {
       if (!arguments.length) return lower48.precision();
       lower48.precision(_);
       alaska.precision(_);
       hawaii.precision(_);
       return albersUsa;
     };
     albersUsa.scale = function(_) {
       if (!arguments.length) return lower48.scale();
       lower48.scale(_);
       alaska.scale(_ * .35);
       hawaii.scale(_);
       return albersUsa.translate(lower48.translate());
     };
     albersUsa.translate = function(_) {
       if (!arguments.length) return lower48.translate();
       var k = lower48.scale(), x = +_[0], y = +_[1];
       lower48Point = lower48.translate(_).clipExtent([ [ x - .455 * k, y - .238 * k ], [ x + .455 * k, y + .238 * k ] ]).stream(pointStream).point;
       alaskaPoint = alaska.translate([ x - .307 * k, y + .201 * k ]).clipExtent([ [ x - .425 * k + ε, y + .12 * k + ε ], [ x - .214 * k - ε, y + .234 * k - ε ] ]).stream(pointStream).point;
       hawaiiPoint = hawaii.translate([ x - .205 * k, y + .212 * k ]).clipExtent([ [ x - .214 * k + ε, y + .166 * k + ε ], [ x - .115 * k - ε, y + .234 * k - ε ] ]).stream(pointStream).point;
       return albersUsa;
     };
     return albersUsa.scale(1070);
   };
   var d3_geo_pathAreaSum, d3_geo_pathAreaPolygon, d3_geo_pathArea = {
     point: d3_noop,
     lineStart: d3_noop,
     lineEnd: d3_noop,
     polygonStart: function() {
       d3_geo_pathAreaPolygon = 0;
       d3_geo_pathArea.lineStart = d3_geo_pathAreaRingStart;
     },
     polygonEnd: function() {
       d3_geo_pathArea.lineStart = d3_geo_pathArea.lineEnd = d3_geo_pathArea.point = d3_noop;
       d3_geo_pathAreaSum += abs(d3_geo_pathAreaPolygon / 2);
     }
   };
   function d3_geo_pathAreaRingStart() {
     var x00, y00, x0, y0;
     d3_geo_pathArea.point = function(x, y) {
       d3_geo_pathArea.point = nextPoint;
       x00 = x0 = x, y00 = y0 = y;
     };
     function nextPoint(x, y) {
       d3_geo_pathAreaPolygon += y0 * x - x0 * y;
       x0 = x, y0 = y;
     }
     d3_geo_pathArea.lineEnd = function() {
       nextPoint(x00, y00);
     };
   }
   var d3_geo_pathBoundsX0, d3_geo_pathBoundsY0, d3_geo_pathBoundsX1, d3_geo_pathBoundsY1;
   var d3_geo_pathBounds = {
     point: d3_geo_pathBoundsPoint,
     lineStart: d3_noop,
     lineEnd: d3_noop,
     polygonStart: d3_noop,
     polygonEnd: d3_noop
   };
   function d3_geo_pathBoundsPoint(x, y) {
     if (x < d3_geo_pathBoundsX0) d3_geo_pathBoundsX0 = x;
     if (x > d3_geo_pathBoundsX1) d3_geo_pathBoundsX1 = x;
     if (y < d3_geo_pathBoundsY0) d3_geo_pathBoundsY0 = y;
     if (y > d3_geo_pathBoundsY1) d3_geo_pathBoundsY1 = y;
   }
   function d3_geo_pathBuffer() {
     var pointCircle = d3_geo_pathBufferCircle(4.5), buffer = [];
     var stream = {
       point: point,
       lineStart: function() {
         stream.point = pointLineStart;
       },
       lineEnd: lineEnd,
       polygonStart: function() {
         stream.lineEnd = lineEndPolygon;
       },
       polygonEnd: function() {
         stream.lineEnd = lineEnd;
         stream.point = point;
       },
       pointRadius: function(_) {
         pointCircle = d3_geo_pathBufferCircle(_);
         return stream;
       },
       result: function() {
         if (buffer.length) {
           var result = buffer.join("");
           buffer = [];
           return result;
         }
       }
     };
     function point(x, y) {
       buffer.push("M", x, ",", y, pointCircle);
     }
     function pointLineStart(x, y) {
       buffer.push("M", x, ",", y);
       stream.point = pointLine;
     }
     function pointLine(x, y) {
       buffer.push("L", x, ",", y);
     }
     function lineEnd() {
       stream.point = point;
     }
     function lineEndPolygon() {
       buffer.push("Z");
     }
     return stream;
   }
   function d3_geo_pathBufferCircle(radius) {
     return "m0," + radius + "a" + radius + "," + radius + " 0 1,1 0," + -2 * radius + "a" + radius + "," + radius + " 0 1,1 0," + 2 * radius + "z";
   }
   var d3_geo_pathCentroid = {
     point: d3_geo_pathCentroidPoint,
     lineStart: d3_geo_pathCentroidLineStart,
     lineEnd: d3_geo_pathCentroidLineEnd,
     polygonStart: function() {
       d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidRingStart;
     },
     polygonEnd: function() {
       d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
       d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidLineStart;
       d3_geo_pathCentroid.lineEnd = d3_geo_pathCentroidLineEnd;
     }
   };
   function d3_geo_pathCentroidPoint(x, y) {
     d3_geo_centroidX0 += x;
     d3_geo_centroidY0 += y;
     ++d3_geo_centroidZ0;
   }
   function d3_geo_pathCentroidLineStart() {
     var x0, y0;
     d3_geo_pathCentroid.point = function(x, y) {
       d3_geo_pathCentroid.point = nextPoint;
       d3_geo_pathCentroidPoint(x0 = x, y0 = y);
     };
     function nextPoint(x, y) {
       var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
       d3_geo_centroidX1 += z * (x0 + x) / 2;
       d3_geo_centroidY1 += z * (y0 + y) / 2;
       d3_geo_centroidZ1 += z;
       d3_geo_pathCentroidPoint(x0 = x, y0 = y);
     }
   }
   function d3_geo_pathCentroidLineEnd() {
     d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
   }
   function d3_geo_pathCentroidRingStart() {
     var x00, y00, x0, y0;
     d3_geo_pathCentroid.point = function(x, y) {
       d3_geo_pathCentroid.point = nextPoint;
       d3_geo_pathCentroidPoint(x00 = x0 = x, y00 = y0 = y);
     };
     function nextPoint(x, y) {
       var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
       d3_geo_centroidX1 += z * (x0 + x) / 2;
       d3_geo_centroidY1 += z * (y0 + y) / 2;
       d3_geo_centroidZ1 += z;
       z = y0 * x - x0 * y;
       d3_geo_centroidX2 += z * (x0 + x);
       d3_geo_centroidY2 += z * (y0 + y);
       d3_geo_centroidZ2 += z * 3;
       d3_geo_pathCentroidPoint(x0 = x, y0 = y);
     }
     d3_geo_pathCentroid.lineEnd = function() {
       nextPoint(x00, y00);
     };
   }
   function d3_geo_pathContext(context) {
     var pointRadius = 4.5;
     var stream = {
       point: point,
       lineStart: function() {
         stream.point = pointLineStart;
       },
       lineEnd: lineEnd,
       polygonStart: function() {
         stream.lineEnd = lineEndPolygon;
       },
       polygonEnd: function() {
         stream.lineEnd = lineEnd;
         stream.point = point;
       },
       pointRadius: function(_) {
         pointRadius = _;
         return stream;
       },
       result: d3_noop
     };
     function point(x, y) {
       context.moveTo(x, y);
       context.arc(x, y, pointRadius, 0, τ);
     }
     function pointLineStart(x, y) {
       context.moveTo(x, y);
       stream.point = pointLine;
     }
     function pointLine(x, y) {
       context.lineTo(x, y);
     }
     function lineEnd() {
       stream.point = point;
     }
     function lineEndPolygon() {
       context.closePath();
     }
     return stream;
   }
   function d3_geo_resample(project) {
     var δ2 = .5, cosMinDistance = Math.cos(30 * d3_radians), maxDepth = 16;
     function resample(stream) {
       return (maxDepth ? resampleRecursive : resampleNone)(stream);
     }
     function resampleNone(stream) {
       return d3_geo_transformPoint(stream, function(x, y) {
         x = project(x, y);
         stream.point(x[0], x[1]);
       });
     }
     function resampleRecursive(stream) {
       var λ00, φ00, x00, y00, a00, b00, c00, λ0, x0, y0, a0, b0, c0;
       var resample = {
         point: point,
         lineStart: lineStart,
         lineEnd: lineEnd,
         polygonStart: function() {
           stream.polygonStart();
           resample.lineStart = ringStart;
         },
         polygonEnd: function() {
           stream.polygonEnd();
           resample.lineStart = lineStart;
         }
       };
       function point(x, y) {
         x = project(x, y);
         stream.point(x[0], x[1]);
       }
       function lineStart() {
         x0 = NaN;
         resample.point = linePoint;
         stream.lineStart();
       }
       function linePoint(λ, φ) {
         var c = d3_geo_cartesian([ λ, φ ]), p = project(λ, φ);
         resampleLineTo(x0, y0, λ0, a0, b0, c0, x0 = p[0], y0 = p[1], λ0 = λ, a0 = c[0], b0 = c[1], c0 = c[2], maxDepth, stream);
         stream.point(x0, y0);
       }
       function lineEnd() {
         resample.point = point;
         stream.lineEnd();
       }
       function ringStart() {
         lineStart();
         resample.point = ringPoint;
         resample.lineEnd = ringEnd;
       }
       function ringPoint(λ, φ) {
         linePoint(λ00 = λ, φ00 = φ), x00 = x0, y00 = y0, a00 = a0, b00 = b0, c00 = c0;
         resample.point = linePoint;
       }
       function ringEnd() {
         resampleLineTo(x0, y0, λ0, a0, b0, c0, x00, y00, λ00, a00, b00, c00, maxDepth, stream);
         resample.lineEnd = lineEnd;
         lineEnd();
       }
       return resample;
     }
     function resampleLineTo(x0, y0, λ0, a0, b0, c0, x1, y1, λ1, a1, b1, c1, depth, stream) {
       var dx = x1 - x0, dy = y1 - y0, d2 = dx * dx + dy * dy;
       if (d2 > 4 * δ2 && depth--) {
         var a = a0 + a1, b = b0 + b1, c = c0 + c1, m = Math.sqrt(a * a + b * b + c * c), φ2 = Math.asin(c /= m), λ2 = abs(abs(c) - 1) < ε || abs(λ0 - λ1) < ε ? (λ0 + λ1) / 2 : Math.atan2(b, a), p = project(λ2, φ2), x2 = p[0], y2 = p[1], dx2 = x2 - x0, dy2 = y2 - y0, dz = dy * dx2 - dx * dy2;
         if (dz * dz / d2 > δ2 || abs((dx * dx2 + dy * dy2) / d2 - .5) > .3 || a0 * a1 + b0 * b1 + c0 * c1 < cosMinDistance) {
           resampleLineTo(x0, y0, λ0, a0, b0, c0, x2, y2, λ2, a /= m, b /= m, c, depth, stream);
           stream.point(x2, y2);
           resampleLineTo(x2, y2, λ2, a, b, c, x1, y1, λ1, a1, b1, c1, depth, stream);
         }
       }
     }
     resample.precision = function(_) {
       if (!arguments.length) return Math.sqrt(δ2);
       maxDepth = (δ2 = _ * _) > 0 && 16;
       return resample;
     };
     return resample;
   }
   d3.geo.path = function() {
     var pointRadius = 4.5, projection, context, projectStream, contextStream, cacheStream;
     function path(object) {
       if (object) {
         if (typeof pointRadius === "function") contextStream.pointRadius(+pointRadius.apply(this, arguments));
         if (!cacheStream || !cacheStream.valid) cacheStream = projectStream(contextStream);
         d3.geo.stream(object, cacheStream);
       }
       return contextStream.result();
     }
     path.area = function(object) {
       d3_geo_pathAreaSum = 0;
       d3.geo.stream(object, projectStream(d3_geo_pathArea));
       return d3_geo_pathAreaSum;
     };
     path.centroid = function(object) {
       d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
       d3.geo.stream(object, projectStream(d3_geo_pathCentroid));
       return d3_geo_centroidZ2 ? [ d3_geo_centroidX2 / d3_geo_centroidZ2, d3_geo_centroidY2 / d3_geo_centroidZ2 ] : d3_geo_centroidZ1 ? [ d3_geo_centroidX1 / d3_geo_centroidZ1, d3_geo_centroidY1 / d3_geo_centroidZ1 ] : d3_geo_centroidZ0 ? [ d3_geo_centroidX0 / d3_geo_centroidZ0, d3_geo_centroidY0 / d3_geo_centroidZ0 ] : [ NaN, NaN ];
     };
     path.bounds = function(object) {
       d3_geo_pathBoundsX1 = d3_geo_pathBoundsY1 = -(d3_geo_pathBoundsX0 = d3_geo_pathBoundsY0 = Infinity);
       d3.geo.stream(object, projectStream(d3_geo_pathBounds));
       return [ [ d3_geo_pathBoundsX0, d3_geo_pathBoundsY0 ], [ d3_geo_pathBoundsX1, d3_geo_pathBoundsY1 ] ];
     };
     path.projection = function(_) {
       if (!arguments.length) return projection;
       projectStream = (projection = _) ? _.stream || d3_geo_pathProjectStream(_) : d3_identity;
       return reset();
     };
     path.context = function(_) {
       if (!arguments.length) return context;
       contextStream = (context = _) == null ? new d3_geo_pathBuffer() : new d3_geo_pathContext(_);
       if (typeof pointRadius !== "function") contextStream.pointRadius(pointRadius);
       return reset();
     };
     path.pointRadius = function(_) {
       if (!arguments.length) return pointRadius;
       pointRadius = typeof _ === "function" ? _ : (contextStream.pointRadius(+_), +_);
       return path;
     };
     function reset() {
       cacheStream = null;
       return path;
     }
     return path.projection(d3.geo.albersUsa()).context(null);
   };
   function d3_geo_pathProjectStream(project) {
     var resample = d3_geo_resample(function(x, y) {
       return project([ x * d3_degrees, y * d3_degrees ]);
     });
     return function(stream) {
       return d3_geo_projectionRadians(resample(stream));
     };
   }
   d3.geo.transform = function(methods) {
     return {
       stream: function(stream) {
         var transform = new d3_geo_transform(stream);
         for (var k in methods) transform[k] = methods[k];
         return transform;
       }
     };
   };
   function d3_geo_transform(stream) {
     this.stream = stream;
   }
   d3_geo_transform.prototype = {
     point: function(x, y) {
       this.stream.point(x, y);
     },
     sphere: function() {
       this.stream.sphere();
     },
     lineStart: function() {
       this.stream.lineStart();
     },
     lineEnd: function() {
       this.stream.lineEnd();
     },
     polygonStart: function() {
       this.stream.polygonStart();
     },
     polygonEnd: function() {
       this.stream.polygonEnd();
     }
   };
   function d3_geo_transformPoint(stream, point) {
     return {
       point: point,
       sphere: function() {
         stream.sphere();
       },
       lineStart: function() {
         stream.lineStart();
       },
       lineEnd: function() {
         stream.lineEnd();
       },
       polygonStart: function() {
         stream.polygonStart();
       },
       polygonEnd: function() {
         stream.polygonEnd();
       }
     };
   }
   d3.geo.projection = d3_geo_projection;
   d3.geo.projectionMutator = d3_geo_projectionMutator;
   function d3_geo_projection(project) {
     return d3_geo_projectionMutator(function() {
       return project;
     })();
   }
   function d3_geo_projectionMutator(projectAt) {
     var project, rotate, projectRotate, projectResample = d3_geo_resample(function(x, y) {
       x = project(x, y);
       return [ x[0] * k + δx, δy - x[1] * k ];
     }), k = 150, x = 480, y = 250, λ = 0, φ = 0, δλ = 0, δφ = 0, δγ = 0, δx, δy, preclip = d3_geo_clipAntimeridian, postclip = d3_identity, clipAngle = null, clipExtent = null, stream;
     function projection(point) {
       point = projectRotate(point[0] * d3_radians, point[1] * d3_radians);
       return [ point[0] * k + δx, δy - point[1] * k ];
     }
     function invert(point) {
       point = projectRotate.invert((point[0] - δx) / k, (δy - point[1]) / k);
       return point && [ point[0] * d3_degrees, point[1] * d3_degrees ];
     }
     projection.stream = function(output) {
       if (stream) stream.valid = false;
       stream = d3_geo_projectionRadians(preclip(rotate, projectResample(postclip(output))));
       stream.valid = true;
       return stream;
     };
     projection.clipAngle = function(_) {
       if (!arguments.length) return clipAngle;
       preclip = _ == null ? (clipAngle = _, d3_geo_clipAntimeridian) : d3_geo_clipCircle((clipAngle = +_) * d3_radians);
       return invalidate();
     };
     projection.clipExtent = function(_) {
       if (!arguments.length) return clipExtent;
       clipExtent = _;
       postclip = _ ? d3_geo_clipExtent(_[0][0], _[0][1], _[1][0], _[1][1]) : d3_identity;
       return invalidate();
     };
     projection.scale = function(_) {
       if (!arguments.length) return k;
       k = +_;
       return reset();
     };
     projection.translate = function(_) {
       if (!arguments.length) return [ x, y ];
       x = +_[0];
       y = +_[1];
       return reset();
     };
     projection.center = function(_) {
       if (!arguments.length) return [ λ * d3_degrees, φ * d3_degrees ];
       λ = _[0] % 360 * d3_radians;
       φ = _[1] % 360 * d3_radians;
       return reset();
     };
     projection.rotate = function(_) {
       if (!arguments.length) return [ δλ * d3_degrees, δφ * d3_degrees, δγ * d3_degrees ];
       δλ = _[0] % 360 * d3_radians;
       δφ = _[1] % 360 * d3_radians;
       δγ = _.length > 2 ? _[2] % 360 * d3_radians : 0;
       return reset();
     };
     d3.rebind(projection, projectResample, "precision");
     function reset() {
       projectRotate = d3_geo_compose(rotate = d3_geo_rotation(δλ, δφ, δγ), project);
       var center = project(λ, φ);
       δx = x - center[0] * k;
       δy = y + center[1] * k;
       return invalidate();
     }
     function invalidate() {
       if (stream) stream.valid = false, stream = null;
       return projection;
     }
     return function() {
       project = projectAt.apply(this, arguments);
       projection.invert = project.invert && invert;
       return reset();
     };
   }
   function d3_geo_projectionRadians(stream) {
     return d3_geo_transformPoint(stream, function(x, y) {
       stream.point(x * d3_radians, y * d3_radians);
     });
   }
   function d3_geo_equirectangular(λ, φ) {
     return [ λ, φ ];
   }
   (d3.geo.equirectangular = function() {
     return d3_geo_projection(d3_geo_equirectangular);
   }).raw = d3_geo_equirectangular.invert = d3_geo_equirectangular;
   d3.geo.rotation = function(rotate) {
     rotate = d3_geo_rotation(rotate[0] % 360 * d3_radians, rotate[1] * d3_radians, rotate.length > 2 ? rotate[2] * d3_radians : 0);
     function forward(coordinates) {
       coordinates = rotate(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
       return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates;
     }
     forward.invert = function(coordinates) {
       coordinates = rotate.invert(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
       return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates;
     };
     return forward;
   };
   function d3_geo_identityRotation(λ, φ) {
     return [ λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ ];
   }
   d3_geo_identityRotation.invert = d3_geo_equirectangular;
   function d3_geo_rotation(δλ, δφ, δγ) {
     return δλ ? δφ || δγ ? d3_geo_compose(d3_geo_rotationλ(δλ), d3_geo_rotationφγ(δφ, δγ)) : d3_geo_rotationλ(δλ) : δφ || δγ ? d3_geo_rotationφγ(δφ, δγ) : d3_geo_identityRotation;
   }
   function d3_geo_forwardRotationλ(δλ) {
     return function(λ, φ) {
       return λ += δλ, [ λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ ];
     };
   }
   function d3_geo_rotationλ(δλ) {
     var rotation = d3_geo_forwardRotationλ(δλ);
     rotation.invert = d3_geo_forwardRotationλ(-δλ);
     return rotation;
   }
   function d3_geo_rotationφγ(δφ, δγ) {
     var cosδφ = Math.cos(δφ), sinδφ = Math.sin(δφ), cosδγ = Math.cos(δγ), sinδγ = Math.sin(δγ);
     function rotation(λ, φ) {
       var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδφ + x * sinδφ;
       return [ Math.atan2(y * cosδγ - k * sinδγ, x * cosδφ - z * sinδφ), d3_asin(k * cosδγ + y * sinδγ) ];
     }
     rotation.invert = function(λ, φ) {
       var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδγ - y * sinδγ;
       return [ Math.atan2(y * cosδγ + z * sinδγ, x * cosδφ + k * sinδφ), d3_asin(k * cosδφ - x * sinδφ) ];
     };
     return rotation;
   }
   d3.geo.circle = function() {
     var origin = [ 0, 0 ], angle, precision = 6, interpolate;
     function circle() {
       var center = typeof origin === "function" ? origin.apply(this, arguments) : origin, rotate = d3_geo_rotation(-center[0] * d3_radians, -center[1] * d3_radians, 0).invert, ring = [];
       interpolate(null, null, 1, {
         point: function(x, y) {
           ring.push(x = rotate(x, y));
           x[0] *= d3_degrees, x[1] *= d3_degrees;
         }
       });
       return {
         type: "Polygon",
         coordinates: [ ring ]
       };
     }
     circle.origin = function(x) {
       if (!arguments.length) return origin;
       origin = x;
       return circle;
     };
     circle.angle = function(x) {
       if (!arguments.length) return angle;
       interpolate = d3_geo_circleInterpolate((angle = +x) * d3_radians, precision * d3_radians);
       return circle;
     };
     circle.precision = function(_) {
       if (!arguments.length) return precision;
       interpolate = d3_geo_circleInterpolate(angle * d3_radians, (precision = +_) * d3_radians);
       return circle;
     };
     return circle.angle(90);
   };
   function d3_geo_circleInterpolate(radius, precision) {
     var cr = Math.cos(radius), sr = Math.sin(radius);
     return function(from, to, direction, listener) {
       var step = direction * precision;
       if (from != null) {
         from = d3_geo_circleAngle(cr, from);
         to = d3_geo_circleAngle(cr, to);
         if (direction > 0 ? from < to : from > to) from += direction * τ;
       } else {
         from = radius + direction * τ;
         to = radius - .5 * step;
       }
       for (var point, t = from; direction > 0 ? t > to : t < to; t -= step) {
         listener.point((point = d3_geo_spherical([ cr, -sr * Math.cos(t), -sr * Math.sin(t) ]))[0], point[1]);
       }
     };
   }
   function d3_geo_circleAngle(cr, point) {
     var a = d3_geo_cartesian(point);
     a[0] -= cr;
     d3_geo_cartesianNormalize(a);
     var angle = d3_acos(-a[1]);
     return ((-a[2] < 0 ? -angle : angle) + 2 * Math.PI - ε) % (2 * Math.PI);
   }
   d3.geo.distance = function(a, b) {
     var Δλ = (b[0] - a[0]) * d3_radians, φ0 = a[1] * d3_radians, φ1 = b[1] * d3_radians, sinΔλ = Math.sin(Δλ), cosΔλ = Math.cos(Δλ), sinφ0 = Math.sin(φ0), cosφ0 = Math.cos(φ0), sinφ1 = Math.sin(φ1), cosφ1 = Math.cos(φ1), t;
     return Math.atan2(Math.sqrt((t = cosφ1 * sinΔλ) * t + (t = cosφ0 * sinφ1 - sinφ0 * cosφ1 * cosΔλ) * t), sinφ0 * sinφ1 + cosφ0 * cosφ1 * cosΔλ);
   };
   d3.geo.graticule = function() {
     var x1, x0, X1, X0, y1, y0, Y1, Y0, dx = 10, dy = dx, DX = 90, DY = 360, x, y, X, Y, precision = 2.5;
     function graticule() {
       return {
         type: "MultiLineString",
         coordinates: lines()
       };
     }
     function lines() {
       return d3.range(Math.ceil(X0 / DX) * DX, X1, DX).map(X).concat(d3.range(Math.ceil(Y0 / DY) * DY, Y1, DY).map(Y)).concat(d3.range(Math.ceil(x0 / dx) * dx, x1, dx).filter(function(x) {
         return abs(x % DX) > ε;
       }).map(x)).concat(d3.range(Math.ceil(y0 / dy) * dy, y1, dy).filter(function(y) {
         return abs(y % DY) > ε;
       }).map(y));
     }
     graticule.lines = function() {
       return lines().map(function(coordinates) {
         return {
           type: "LineString",
           coordinates: coordinates
         };
       });
     };
     graticule.outline = function() {
       return {
         type: "Polygon",
         coordinates: [ X(X0).concat(Y(Y1).slice(1), X(X1).reverse().slice(1), Y(Y0).reverse().slice(1)) ]
       };
     };
     graticule.extent = function(_) {
       if (!arguments.length) return graticule.minorExtent();
       return graticule.majorExtent(_).minorExtent(_);
     };
     graticule.majorExtent = function(_) {
       if (!arguments.length) return [ [ X0, Y0 ], [ X1, Y1 ] ];
       X0 = +_[0][0], X1 = +_[1][0];
       Y0 = +_[0][1], Y1 = +_[1][1];
       if (X0 > X1) _ = X0, X0 = X1, X1 = _;
       if (Y0 > Y1) _ = Y0, Y0 = Y1, Y1 = _;
       return graticule.precision(precision);
     };
     graticule.minorExtent = function(_) {
       if (!arguments.length) return [ [ x0, y0 ], [ x1, y1 ] ];
       x0 = +_[0][0], x1 = +_[1][0];
       y0 = +_[0][1], y1 = +_[1][1];
       if (x0 > x1) _ = x0, x0 = x1, x1 = _;
       if (y0 > y1) _ = y0, y0 = y1, y1 = _;
       return graticule.precision(precision);
     };
     graticule.step = function(_) {
       if (!arguments.length) return graticule.minorStep();
       return graticule.majorStep(_).minorStep(_);
     };
     graticule.majorStep = function(_) {
       if (!arguments.length) return [ DX, DY ];
       DX = +_[0], DY = +_[1];
       return graticule;
     };
     graticule.minorStep = function(_) {
       if (!arguments.length) return [ dx, dy ];
       dx = +_[0], dy = +_[1];
       return graticule;
     };
     graticule.precision = function(_) {
       if (!arguments.length) return precision;
       precision = +_;
       x = d3_geo_graticuleX(y0, y1, 90);
       y = d3_geo_graticuleY(x0, x1, precision);
       X = d3_geo_graticuleX(Y0, Y1, 90);
       Y = d3_geo_graticuleY(X0, X1, precision);
       return graticule;
     };
     return graticule.majorExtent([ [ -180, -90 + ε ], [ 180, 90 - ε ] ]).minorExtent([ [ -180, -80 - ε ], [ 180, 80 + ε ] ]);
   };
   function d3_geo_graticuleX(y0, y1, dy) {
     var y = d3.range(y0, y1 - ε, dy).concat(y1);
     return function(x) {
       return y.map(function(y) {
         return [ x, y ];
       });
     };
   }
   function d3_geo_graticuleY(x0, x1, dx) {
     var x = d3.range(x0, x1 - ε, dx).concat(x1);
     return function(y) {
       return x.map(function(x) {
         return [ x, y ];
       });
     };
   }
   function d3_source(d) {
     return d.source;
   }
   function d3_target(d) {
     return d.target;
   }
   d3.geo.greatArc = function() {
     var source = d3_source, source_, target = d3_target, target_;
     function greatArc() {
       return {
         type: "LineString",
         coordinates: [ source_ || source.apply(this, arguments), target_ || target.apply(this, arguments) ]
       };
     }
     greatArc.distance = function() {
       return d3.geo.distance(source_ || source.apply(this, arguments), target_ || target.apply(this, arguments));
     };
     greatArc.source = function(_) {
       if (!arguments.length) return source;
       source = _, source_ = typeof _ === "function" ? null : _;
       return greatArc;
     };
     greatArc.target = function(_) {
       if (!arguments.length) return target;
       target = _, target_ = typeof _ === "function" ? null : _;
       return greatArc;
     };
     greatArc.precision = function() {
       return arguments.length ? greatArc : 0;
     };
     return greatArc;
   };
   d3.geo.interpolate = function(source, target) {
     return d3_geo_interpolate(source[0] * d3_radians, source[1] * d3_radians, target[0] * d3_radians, target[1] * d3_radians);
   };
   function d3_geo_interpolate(x0, y0, x1, y1) {
     var cy0 = Math.cos(y0), sy0 = Math.sin(y0), cy1 = Math.cos(y1), sy1 = Math.sin(y1), kx0 = cy0 * Math.cos(x0), ky0 = cy0 * Math.sin(x0), kx1 = cy1 * Math.cos(x1), ky1 = cy1 * Math.sin(x1), d = 2 * Math.asin(Math.sqrt(d3_haversin(y1 - y0) + cy0 * cy1 * d3_haversin(x1 - x0))), k = 1 / Math.sin(d);
     var interpolate = d ? function(t) {
       var B = Math.sin(t *= d) * k, A = Math.sin(d - t) * k, x = A * kx0 + B * kx1, y = A * ky0 + B * ky1, z = A * sy0 + B * sy1;
       return [ Math.atan2(y, x) * d3_degrees, Math.atan2(z, Math.sqrt(x * x + y * y)) * d3_degrees ];
     } : function() {
       return [ x0 * d3_degrees, y0 * d3_degrees ];
     };
     interpolate.distance = d;
     return interpolate;
   }
   d3.geo.length = function(object) {
     d3_geo_lengthSum = 0;
     d3.geo.stream(object, d3_geo_length);
     return d3_geo_lengthSum;
   };
   var d3_geo_lengthSum;
   var d3_geo_length = {
     sphere: d3_noop,
     point: d3_noop,
     lineStart: d3_geo_lengthLineStart,
     lineEnd: d3_noop,
     polygonStart: d3_noop,
     polygonEnd: d3_noop
   };
   function d3_geo_lengthLineStart() {
     var λ0, sinφ0, cosφ0;
     d3_geo_length.point = function(λ, φ) {
       λ0 = λ * d3_radians, sinφ0 = Math.sin(φ *= d3_radians), cosφ0 = Math.cos(φ);
       d3_geo_length.point = nextPoint;
     };
     d3_geo_length.lineEnd = function() {
       d3_geo_length.point = d3_geo_length.lineEnd = d3_noop;
     };
     function nextPoint(λ, φ) {
       var sinφ = Math.sin(φ *= d3_radians), cosφ = Math.cos(φ), t = abs((λ *= d3_radians) - λ0), cosΔλ = Math.cos(t);
       d3_geo_lengthSum += Math.atan2(Math.sqrt((t = cosφ * Math.sin(t)) * t + (t = cosφ0 * sinφ - sinφ0 * cosφ * cosΔλ) * t), sinφ0 * sinφ + cosφ0 * cosφ * cosΔλ);
       λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ;
     }
   }
   function d3_geo_azimuthal(scale, angle) {
     function azimuthal(λ, φ) {
       var cosλ = Math.cos(λ), cosφ = Math.cos(φ), k = scale(cosλ * cosφ);
       return [ k * cosφ * Math.sin(λ), k * Math.sin(φ) ];
     }
     azimuthal.invert = function(x, y) {
       var ρ = Math.sqrt(x * x + y * y), c = angle(ρ), sinc = Math.sin(c), cosc = Math.cos(c);
       return [ Math.atan2(x * sinc, ρ * cosc), Math.asin(ρ && y * sinc / ρ) ];
     };
     return azimuthal;
   }
   var d3_geo_azimuthalEqualArea = d3_geo_azimuthal(function(cosλcosφ) {
     return Math.sqrt(2 / (1 + cosλcosφ));
   }, function(ρ) {
     return 2 * Math.asin(ρ / 2);
   });
   (d3.geo.azimuthalEqualArea = function() {
     return d3_geo_projection(d3_geo_azimuthalEqualArea);
   }).raw = d3_geo_azimuthalEqualArea;
   var d3_geo_azimuthalEquidistant = d3_geo_azimuthal(function(cosλcosφ) {
     var c = Math.acos(cosλcosφ);
     return c && c / Math.sin(c);
   }, d3_identity);
   (d3.geo.azimuthalEquidistant = function() {
     return d3_geo_projection(d3_geo_azimuthalEquidistant);
   }).raw = d3_geo_azimuthalEquidistant;
   function d3_geo_conicConformal(φ0, φ1) {
     var cosφ0 = Math.cos(φ0), t = function(φ) {
       return Math.tan(π / 4 + φ / 2);
     }, n = φ0 === φ1 ? Math.sin(φ0) : Math.log(cosφ0 / Math.cos(φ1)) / Math.log(t(φ1) / t(φ0)), F = cosφ0 * Math.pow(t(φ0), n) / n;
     if (!n) return d3_geo_mercator;
     function forward(λ, φ) {
       var ρ = abs(abs(φ) - halfπ) < ε ? 0 : F / Math.pow(t(φ), n);
       return [ ρ * Math.sin(n * λ), F - ρ * Math.cos(n * λ) ];
     }
     forward.invert = function(x, y) {
       var ρ0_y = F - y, ρ = d3_sgn(n) * Math.sqrt(x * x + ρ0_y * ρ0_y);
       return [ Math.atan2(x, ρ0_y) / n, 2 * Math.atan(Math.pow(F / ρ, 1 / n)) - halfπ ];
     };
     return forward;
   }
   (d3.geo.conicConformal = function() {
     return d3_geo_conic(d3_geo_conicConformal);
   }).raw = d3_geo_conicConformal;
   function d3_geo_conicEquidistant(φ0, φ1) {
     var cosφ0 = Math.cos(φ0), n = φ0 === φ1 ? Math.sin(φ0) : (cosφ0 - Math.cos(φ1)) / (φ1 - φ0), G = cosφ0 / n + φ0;
     if (abs(n) < ε) return d3_geo_equirectangular;
     function forward(λ, φ) {
       var ρ = G - φ;
       return [ ρ * Math.sin(n * λ), G - ρ * Math.cos(n * λ) ];
     }
     forward.invert = function(x, y) {
       var ρ0_y = G - y;
       return [ Math.atan2(x, ρ0_y) / n, G - d3_sgn(n) * Math.sqrt(x * x + ρ0_y * ρ0_y) ];
     };
     return forward;
   }
   (d3.geo.conicEquidistant = function() {
     return d3_geo_conic(d3_geo_conicEquidistant);
   }).raw = d3_geo_conicEquidistant;
   var d3_geo_gnomonic = d3_geo_azimuthal(function(cosλcosφ) {
     return 1 / cosλcosφ;
   }, Math.atan);
   (d3.geo.gnomonic = function() {
     return d3_geo_projection(d3_geo_gnomonic);
   }).raw = d3_geo_gnomonic;
   function d3_geo_mercator(λ, φ) {
     return [ λ, Math.log(Math.tan(π / 4 + φ / 2)) ];
   }
   d3_geo_mercator.invert = function(x, y) {
     return [ x, 2 * Math.atan(Math.exp(y)) - halfπ ];
   };
   function d3_geo_mercatorProjection(project) {
     var m = d3_geo_projection(project), scale = m.scale, translate = m.translate, clipExtent = m.clipExtent, clipAuto;
     m.scale = function() {
       var v = scale.apply(m, arguments);
       return v === m ? clipAuto ? m.clipExtent(null) : m : v;
     };
     m.translate = function() {
       var v = translate.apply(m, arguments);
       return v === m ? clipAuto ? m.clipExtent(null) : m : v;
     };
     m.clipExtent = function(_) {
       var v = clipExtent.apply(m, arguments);
       if (v === m) {
         if (clipAuto = _ == null) {
           var k = π * scale(), t = translate();
           clipExtent([ [ t[0] - k, t[1] - k ], [ t[0] + k, t[1] + k ] ]);
         }
       } else if (clipAuto) {
         v = null;
       }
       return v;
     };
     return m.clipExtent(null);
   }
   (d3.geo.mercator = function() {
     return d3_geo_mercatorProjection(d3_geo_mercator);
   }).raw = d3_geo_mercator;
   var d3_geo_orthographic = d3_geo_azimuthal(function() {
     return 1;
   }, Math.asin);
   (d3.geo.orthographic = function() {
     return d3_geo_projection(d3_geo_orthographic);
   }).raw = d3_geo_orthographic;
   var d3_geo_stereographic = d3_geo_azimuthal(function(cosλcosφ) {
     return 1 / (1 + cosλcosφ);
   }, function(ρ) {
     return 2 * Math.atan(ρ);
   });
   (d3.geo.stereographic = function() {
     return d3_geo_projection(d3_geo_stereographic);
   }).raw = d3_geo_stereographic;
   function d3_geo_transverseMercator(λ, φ) {
     return [ Math.log(Math.tan(π / 4 + φ / 2)), -λ ];
   }
   d3_geo_transverseMercator.invert = function(x, y) {
     return [ -y, 2 * Math.atan(Math.exp(x)) - halfπ ];
   };
   (d3.geo.transverseMercator = function() {
     var projection = d3_geo_mercatorProjection(d3_geo_transverseMercator), center = projection.center, rotate = projection.rotate;
     projection.center = function(_) {
       return _ ? center([ -_[1], _[0] ]) : (_ = center(), [ -_[1], _[0] ]);
     };
     projection.rotate = function(_) {
       return _ ? rotate([ _[0], _[1], _.length > 2 ? _[2] + 90 : 90 ]) : (_ = rotate(),
       [ _[0], _[1], _[2] - 90 ]);
     };
     return projection.rotate([ 0, 0 ]);
   }).raw = d3_geo_transverseMercator;
   d3.geom = {};
   function d3_geom_pointX(d) {
     return d[0];
   }
   function d3_geom_pointY(d) {
     return d[1];
   }
   d3.geom.hull = function(vertices) {
     var x = d3_geom_pointX, y = d3_geom_pointY;
     if (arguments.length) return hull(vertices);
     function hull(data) {
       if (data.length < 3) return [];
       var fx = d3_functor(x), fy = d3_functor(y), i, n = data.length, points = [], flippedPoints = [];
       for (i = 0; i < n; i++) {
         points.push([ +fx.call(this, data[i], i), +fy.call(this, data[i], i), i ]);
       }
       points.sort(d3_geom_hullOrder);
       for (i = 0; i < n; i++) flippedPoints.push([ points[i][0], -points[i][1] ]);
       var upper = d3_geom_hullUpper(points), lower = d3_geom_hullUpper(flippedPoints);
       var skipLeft = lower[0] === upper[0], skipRight = lower[lower.length - 1] === upper[upper.length - 1], polygon = [];
       for (i = upper.length - 1; i >= 0; --i) polygon.push(data[points[upper[i]][2]]);
       for (i = +skipLeft; i < lower.length - skipRight; ++i) polygon.push(data[points[lower[i]][2]]);
       return polygon;
     }
     hull.x = function(_) {
       return arguments.length ? (x = _, hull) : x;
     };
     hull.y = function(_) {
       return arguments.length ? (y = _, hull) : y;
     };
     return hull;
   };
   function d3_geom_hullUpper(points) {
     var n = points.length, hull = [ 0, 1 ], hs = 2;
     for (var i = 2; i < n; i++) {
       while (hs > 1 && d3_cross2d(points[hull[hs - 2]], points[hull[hs - 1]], points[i]) <= 0) --hs;
       hull[hs++] = i;
     }
     return hull.slice(0, hs);
   }
   function d3_geom_hullOrder(a, b) {
     return a[0] - b[0] || a[1] - b[1];
   }
   d3.geom.polygon = function(coordinates) {
     d3_subclass(coordinates, d3_geom_polygonPrototype);
     return coordinates;
   };
   var d3_geom_polygonPrototype = d3.geom.polygon.prototype = [];
   d3_geom_polygonPrototype.area = function() {
     var i = -1, n = this.length, a, b = this[n - 1], area = 0;
     while (++i < n) {
       a = b;
       b = this[i];
       area += a[1] * b[0] - a[0] * b[1];
     }
     return area * .5;
   };
   d3_geom_polygonPrototype.centroid = function(k) {
     var i = -1, n = this.length, x = 0, y = 0, a, b = this[n - 1], c;
     if (!arguments.length) k = -1 / (6 * this.area());
     while (++i < n) {
       a = b;
       b = this[i];
       c = a[0] * b[1] - b[0] * a[1];
       x += (a[0] + b[0]) * c;
       y += (a[1] + b[1]) * c;
     }
     return [ x * k, y * k ];
   };
   d3_geom_polygonPrototype.clip = function(subject) {
     var input, closed = d3_geom_polygonClosed(subject), i = -1, n = this.length - d3_geom_polygonClosed(this), j, m, a = this[n - 1], b, c, d;
     while (++i < n) {
       input = subject.slice();
       subject.length = 0;
       b = this[i];
       c = input[(m = input.length - closed) - 1];
       j = -1;
       while (++j < m) {
         d = input[j];
         if (d3_geom_polygonInside(d, a, b)) {
           if (!d3_geom_polygonInside(c, a, b)) {
             subject.push(d3_geom_polygonIntersect(c, d, a, b));
           }
           subject.push(d);
         } else if (d3_geom_polygonInside(c, a, b)) {
           subject.push(d3_geom_polygonIntersect(c, d, a, b));
         }
         c = d;
       }
       if (closed) subject.push(subject[0]);
       a = b;
     }
     return subject;
   };
   function d3_geom_polygonInside(p, a, b) {
     return (b[0] - a[0]) * (p[1] - a[1]) < (b[1] - a[1]) * (p[0] - a[0]);
   }
   function d3_geom_polygonIntersect(c, d, a, b) {
     var x1 = c[0], x3 = a[0], x21 = d[0] - x1, x43 = b[0] - x3, y1 = c[1], y3 = a[1], y21 = d[1] - y1, y43 = b[1] - y3, ua = (x43 * (y1 - y3) - y43 * (x1 - x3)) / (y43 * x21 - x43 * y21);
     return [ x1 + ua * x21, y1 + ua * y21 ];
   }
   function d3_geom_polygonClosed(coordinates) {
     var a = coordinates[0], b = coordinates[coordinates.length - 1];
     return !(a[0] - b[0] || a[1] - b[1]);
   }
   var d3_geom_voronoiEdges, d3_geom_voronoiCells, d3_geom_voronoiBeaches, d3_geom_voronoiBeachPool = [], d3_geom_voronoiFirstCircle, d3_geom_voronoiCircles, d3_geom_voronoiCirclePool = [];
   function d3_geom_voronoiBeach() {
     d3_geom_voronoiRedBlackNode(this);
     this.edge = this.site = this.circle = null;
   }
   function d3_geom_voronoiCreateBeach(site) {
     var beach = d3_geom_voronoiBeachPool.pop() || new d3_geom_voronoiBeach();
     beach.site = site;
     return beach;
   }
   function d3_geom_voronoiDetachBeach(beach) {
     d3_geom_voronoiDetachCircle(beach);
     d3_geom_voronoiBeaches.remove(beach);
     d3_geom_voronoiBeachPool.push(beach);
     d3_geom_voronoiRedBlackNode(beach);
   }
   function d3_geom_voronoiRemoveBeach(beach) {
     var circle = beach.circle, x = circle.x, y = circle.cy, vertex = {
       x: x,
       y: y
     }, previous = beach.P, next = beach.N, disappearing = [ beach ];
     d3_geom_voronoiDetachBeach(beach);
     var lArc = previous;
     while (lArc.circle && abs(x - lArc.circle.x) < ε && abs(y - lArc.circle.cy) < ε) {
       previous = lArc.P;
       disappearing.unshift(lArc);
       d3_geom_voronoiDetachBeach(lArc);
       lArc = previous;
     }
     disappearing.unshift(lArc);
     d3_geom_voronoiDetachCircle(lArc);
     var rArc = next;
     while (rArc.circle && abs(x - rArc.circle.x) < ε && abs(y - rArc.circle.cy) < ε) {
       next = rArc.N;
       disappearing.push(rArc);
       d3_geom_voronoiDetachBeach(rArc);
       rArc = next;
     }
     disappearing.push(rArc);
     d3_geom_voronoiDetachCircle(rArc);
     var nArcs = disappearing.length, iArc;
     for (iArc = 1; iArc < nArcs; ++iArc) {
       rArc = disappearing[iArc];
       lArc = disappearing[iArc - 1];
       d3_geom_voronoiSetEdgeEnd(rArc.edge, lArc.site, rArc.site, vertex);
     }
     lArc = disappearing[0];
     rArc = disappearing[nArcs - 1];
     rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, rArc.site, null, vertex);
     d3_geom_voronoiAttachCircle(lArc);
     d3_geom_voronoiAttachCircle(rArc);
   }
   function d3_geom_voronoiAddBeach(site) {
     var x = site.x, directrix = site.y, lArc, rArc, dxl, dxr, node = d3_geom_voronoiBeaches._;
     while (node) {
       dxl = d3_geom_voronoiLeftBreakPoint(node, directrix) - x;
       if (dxl > ε) node = node.L; else {
         dxr = x - d3_geom_voronoiRightBreakPoint(node, directrix);
         if (dxr > ε) {
           if (!node.R) {
             lArc = node;
             break;
           }
           node = node.R;
         } else {
           if (dxl > -ε) {
             lArc = node.P;
             rArc = node;
           } else if (dxr > -ε) {
             lArc = node;
             rArc = node.N;
           } else {
             lArc = rArc = node;
           }
           break;
         }
       }
     }
     var newArc = d3_geom_voronoiCreateBeach(site);
     d3_geom_voronoiBeaches.insert(lArc, newArc);
     if (!lArc && !rArc) return;
     if (lArc === rArc) {
       d3_geom_voronoiDetachCircle(lArc);
       rArc = d3_geom_voronoiCreateBeach(lArc.site);
       d3_geom_voronoiBeaches.insert(newArc, rArc);
       newArc.edge = rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
       d3_geom_voronoiAttachCircle(lArc);
       d3_geom_voronoiAttachCircle(rArc);
       return;
     }
     if (!rArc) {
       newArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
       return;
     }
     d3_geom_voronoiDetachCircle(lArc);
     d3_geom_voronoiDetachCircle(rArc);
     var lSite = lArc.site, ax = lSite.x, ay = lSite.y, bx = site.x - ax, by = site.y - ay, rSite = rArc.site, cx = rSite.x - ax, cy = rSite.y - ay, d = 2 * (bx * cy - by * cx), hb = bx * bx + by * by, hc = cx * cx + cy * cy, vertex = {
       x: (cy * hb - by * hc) / d + ax,
       y: (bx * hc - cx * hb) / d + ay
     };
     d3_geom_voronoiSetEdgeEnd(rArc.edge, lSite, rSite, vertex);
     newArc.edge = d3_geom_voronoiCreateEdge(lSite, site, null, vertex);
     rArc.edge = d3_geom_voronoiCreateEdge(site, rSite, null, vertex);
     d3_geom_voronoiAttachCircle(lArc);
     d3_geom_voronoiAttachCircle(rArc);
   }
   function d3_geom_voronoiLeftBreakPoint(arc, directrix) {
     var site = arc.site, rfocx = site.x, rfocy = site.y, pby2 = rfocy - directrix;
     if (!pby2) return rfocx;
     var lArc = arc.P;
     if (!lArc) return -Infinity;
     site = lArc.site;
     var lfocx = site.x, lfocy = site.y, plby2 = lfocy - directrix;
     if (!plby2) return lfocx;
     var hl = lfocx - rfocx, aby2 = 1 / pby2 - 1 / plby2, b = hl / plby2;
     if (aby2) return (-b + Math.sqrt(b * b - 2 * aby2 * (hl * hl / (-2 * plby2) - lfocy + plby2 / 2 + rfocy - pby2 / 2))) / aby2 + rfocx;
     return (rfocx + lfocx) / 2;
   }
   function d3_geom_voronoiRightBreakPoint(arc, directrix) {
     var rArc = arc.N;
     if (rArc) return d3_geom_voronoiLeftBreakPoint(rArc, directrix);
     var site = arc.site;
     return site.y === directrix ? site.x : Infinity;
   }
   function d3_geom_voronoiCell(site) {
     this.site = site;
     this.edges = [];
   }
   d3_geom_voronoiCell.prototype.prepare = function() {
     var halfEdges = this.edges, iHalfEdge = halfEdges.length, edge;
     while (iHalfEdge--) {
       edge = halfEdges[iHalfEdge].edge;
       if (!edge.b || !edge.a) halfEdges.splice(iHalfEdge, 1);
     }
     halfEdges.sort(d3_geom_voronoiHalfEdgeOrder);
     return halfEdges.length;
   };
   function d3_geom_voronoiCloseCells(extent) {
     var x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], x2, y2, x3, y3, cells = d3_geom_voronoiCells, iCell = cells.length, cell, iHalfEdge, halfEdges, nHalfEdges, start, end;
     while (iCell--) {
       cell = cells[iCell];
       if (!cell || !cell.prepare()) continue;
       halfEdges = cell.edges;
       nHalfEdges = halfEdges.length;
       iHalfEdge = 0;
       while (iHalfEdge < nHalfEdges) {
         end = halfEdges[iHalfEdge].end(), x3 = end.x, y3 = end.y;
         start = halfEdges[++iHalfEdge % nHalfEdges].start(), x2 = start.x, y2 = start.y;
         if (abs(x3 - x2) > ε || abs(y3 - y2) > ε) {
           halfEdges.splice(iHalfEdge, 0, new d3_geom_voronoiHalfEdge(d3_geom_voronoiCreateBorderEdge(cell.site, end, abs(x3 - x0) < ε && y1 - y3 > ε ? {
             x: x0,
             y: abs(x2 - x0) < ε ? y2 : y1
           } : abs(y3 - y1) < ε && x1 - x3 > ε ? {
             x: abs(y2 - y1) < ε ? x2 : x1,
             y: y1
           } : abs(x3 - x1) < ε && y3 - y0 > ε ? {
             x: x1,
             y: abs(x2 - x1) < ε ? y2 : y0
           } : abs(y3 - y0) < ε && x3 - x0 > ε ? {
             x: abs(y2 - y0) < ε ? x2 : x0,
             y: y0
           } : null), cell.site, null));
           ++nHalfEdges;
         }
       }
     }
   }
   function d3_geom_voronoiHalfEdgeOrder(a, b) {
     return b.angle - a.angle;
   }
   function d3_geom_voronoiCircle() {
     d3_geom_voronoiRedBlackNode(this);
     this.x = this.y = this.arc = this.site = this.cy = null;
   }
   function d3_geom_voronoiAttachCircle(arc) {
     var lArc = arc.P, rArc = arc.N;
     if (!lArc || !rArc) return;
     var lSite = lArc.site, cSite = arc.site, rSite = rArc.site;
     if (lSite === rSite) return;
     var bx = cSite.x, by = cSite.y, ax = lSite.x - bx, ay = lSite.y - by, cx = rSite.x - bx, cy = rSite.y - by;
     var d = 2 * (ax * cy - ay * cx);
     if (d >= -ε2) return;
     var ha = ax * ax + ay * ay, hc = cx * cx + cy * cy, x = (cy * ha - ay * hc) / d, y = (ax * hc - cx * ha) / d, cy = y + by;
     var circle = d3_geom_voronoiCirclePool.pop() || new d3_geom_voronoiCircle();
     circle.arc = arc;
     circle.site = cSite;
     circle.x = x + bx;
     circle.y = cy + Math.sqrt(x * x + y * y);
     circle.cy = cy;
     arc.circle = circle;
     var before = null, node = d3_geom_voronoiCircles._;
     while (node) {
       if (circle.y < node.y || circle.y === node.y && circle.x <= node.x) {
         if (node.L) node = node.L; else {
           before = node.P;
           break;
         }
       } else {
         if (node.R) node = node.R; else {
           before = node;
           break;
         }
       }
     }
     d3_geom_voronoiCircles.insert(before, circle);
     if (!before) d3_geom_voronoiFirstCircle = circle;
   }
   function d3_geom_voronoiDetachCircle(arc) {
     var circle = arc.circle;
     if (circle) {
       if (!circle.P) d3_geom_voronoiFirstCircle = circle.N;
       d3_geom_voronoiCircles.remove(circle);
       d3_geom_voronoiCirclePool.push(circle);
       d3_geom_voronoiRedBlackNode(circle);
       arc.circle = null;
     }
   }
   function d3_geom_voronoiClipEdges(extent) {
     var edges = d3_geom_voronoiEdges, clip = d3_geom_clipLine(extent[0][0], extent[0][1], extent[1][0], extent[1][1]), i = edges.length, e;
     while (i--) {
       e = edges[i];
       if (!d3_geom_voronoiConnectEdge(e, extent) || !clip(e) || abs(e.a.x - e.b.x) < ε && abs(e.a.y - e.b.y) < ε) {
         e.a = e.b = null;
         edges.splice(i, 1);
       }
     }
   }
   function d3_geom_voronoiConnectEdge(edge, extent) {
     var vb = edge.b;
     if (vb) return true;
     var va = edge.a, x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], lSite = edge.l, rSite = edge.r, lx = lSite.x, ly = lSite.y, rx = rSite.x, ry = rSite.y, fx = (lx + rx) / 2, fy = (ly + ry) / 2, fm, fb;
     if (ry === ly) {
       if (fx < x0 || fx >= x1) return;
       if (lx > rx) {
         if (!va) va = {
           x: fx,
           y: y0
         }; else if (va.y >= y1) return;
         vb = {
           x: fx,
           y: y1
         };
       } else {
         if (!va) va = {
           x: fx,
           y: y1
         }; else if (va.y < y0) return;
         vb = {
           x: fx,
           y: y0
         };
       }
     } else {
       fm = (lx - rx) / (ry - ly);
       fb = fy - fm * fx;
       if (fm < -1 || fm > 1) {
         if (lx > rx) {
           if (!va) va = {
             x: (y0 - fb) / fm,
             y: y0
           }; else if (va.y >= y1) return;
           vb = {
             x: (y1 - fb) / fm,
             y: y1
           };
         } else {
           if (!va) va = {
             x: (y1 - fb) / fm,
             y: y1
           }; else if (va.y < y0) return;
           vb = {
             x: (y0 - fb) / fm,
             y: y0
           };
         }
       } else {
         if (ly < ry) {
           if (!va) va = {
             x: x0,
             y: fm * x0 + fb
           }; else if (va.x >= x1) return;
           vb = {
             x: x1,
             y: fm * x1 + fb
           };
         } else {
           if (!va) va = {
             x: x1,
             y: fm * x1 + fb
           }; else if (va.x < x0) return;
           vb = {
             x: x0,
             y: fm * x0 + fb
           };
         }
       }
     }
     edge.a = va;
     edge.b = vb;
     return true;
   }
   function d3_geom_voronoiEdge(lSite, rSite) {
     this.l = lSite;
     this.r = rSite;
     this.a = this.b = null;
   }
   function d3_geom_voronoiCreateEdge(lSite, rSite, va, vb) {
     var edge = new d3_geom_voronoiEdge(lSite, rSite);
     d3_geom_voronoiEdges.push(edge);
     if (va) d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, va);
     if (vb) d3_geom_voronoiSetEdgeEnd(edge, rSite, lSite, vb);
     d3_geom_voronoiCells[lSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, lSite, rSite));
     d3_geom_voronoiCells[rSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, rSite, lSite));
     return edge;
   }
   function d3_geom_voronoiCreateBorderEdge(lSite, va, vb) {
     var edge = new d3_geom_voronoiEdge(lSite, null);
     edge.a = va;
     edge.b = vb;
     d3_geom_voronoiEdges.push(edge);
     return edge;
   }
   function d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, vertex) {
     if (!edge.a && !edge.b) {
       edge.a = vertex;
       edge.l = lSite;
       edge.r = rSite;
     } else if (edge.l === rSite) {
       edge.b = vertex;
     } else {
       edge.a = vertex;
     }
   }
   function d3_geom_voronoiHalfEdge(edge, lSite, rSite) {
     var va = edge.a, vb = edge.b;
     this.edge = edge;
     this.site = lSite;
     this.angle = rSite ? Math.atan2(rSite.y - lSite.y, rSite.x - lSite.x) : edge.l === lSite ? Math.atan2(vb.x - va.x, va.y - vb.y) : Math.atan2(va.x - vb.x, vb.y - va.y);
   }
   d3_geom_voronoiHalfEdge.prototype = {
     start: function() {
       return this.edge.l === this.site ? this.edge.a : this.edge.b;
     },
     end: function() {
       return this.edge.l === this.site ? this.edge.b : this.edge.a;
     }
   };
   function d3_geom_voronoiRedBlackTree() {
     this._ = null;
   }
   function d3_geom_voronoiRedBlackNode(node) {
     node.U = node.C = node.L = node.R = node.P = node.N = null;
   }
   d3_geom_voronoiRedBlackTree.prototype = {
     insert: function(after, node) {
       var parent, grandpa, uncle;
       if (after) {
         node.P = after;
         node.N = after.N;
         if (after.N) after.N.P = node;
         after.N = node;
         if (after.R) {
           after = after.R;
           while (after.L) after = after.L;
           after.L = node;
         } else {
           after.R = node;
         }
         parent = after;
       } else if (this._) {
         after = d3_geom_voronoiRedBlackFirst(this._);
         node.P = null;
         node.N = after;
         after.P = after.L = node;
         parent = after;
       } else {
         node.P = node.N = null;
         this._ = node;
         parent = null;
       }
       node.L = node.R = null;
       node.U = parent;
       node.C = true;
       after = node;
       while (parent && parent.C) {
         grandpa = parent.U;
         if (parent === grandpa.L) {
           uncle = grandpa.R;
           if (uncle && uncle.C) {
             parent.C = uncle.C = false;
             grandpa.C = true;
             after = grandpa;
           } else {
             if (after === parent.R) {
               d3_geom_voronoiRedBlackRotateLeft(this, parent);
               after = parent;
               parent = after.U;
             }
             parent.C = false;
             grandpa.C = true;
             d3_geom_voronoiRedBlackRotateRight(this, grandpa);
           }
         } else {
           uncle = grandpa.L;
           if (uncle && uncle.C) {
             parent.C = uncle.C = false;
             grandpa.C = true;
             after = grandpa;
           } else {
             if (after === parent.L) {
               d3_geom_voronoiRedBlackRotateRight(this, parent);
               after = parent;
               parent = after.U;
             }
             parent.C = false;
             grandpa.C = true;
             d3_geom_voronoiRedBlackRotateLeft(this, grandpa);
           }
         }
         parent = after.U;
       }
       this._.C = false;
     },
     remove: function(node) {
       if (node.N) node.N.P = node.P;
       if (node.P) node.P.N = node.N;
       node.N = node.P = null;
       var parent = node.U, sibling, left = node.L, right = node.R, next, red;
       if (!left) next = right; else if (!right) next = left; else next = d3_geom_voronoiRedBlackFirst(right);
       if (parent) {
         if (parent.L === node) parent.L = next; else parent.R = next;
       } else {
         this._ = next;
       }
       if (left && right) {
         red = next.C;
         next.C = node.C;
         next.L = left;
         left.U = next;
         if (next !== right) {
           parent = next.U;
           next.U = node.U;
           node = next.R;
           parent.L = node;
           next.R = right;
           right.U = next;
         } else {
           next.U = parent;
           parent = next;
           node = next.R;
         }
       } else {
         red = node.C;
         node = next;
       }
       if (node) node.U = parent;
       if (red) return;
       if (node && node.C) {
         node.C = false;
         return;
       }
       do {
         if (node === this._) break;
         if (node === parent.L) {
           sibling = parent.R;
           if (sibling.C) {
             sibling.C = false;
             parent.C = true;
             d3_geom_voronoiRedBlackRotateLeft(this, parent);
             sibling = parent.R;
           }
           if (sibling.L && sibling.L.C || sibling.R && sibling.R.C) {
             if (!sibling.R || !sibling.R.C) {
               sibling.L.C = false;
               sibling.C = true;
               d3_geom_voronoiRedBlackRotateRight(this, sibling);
               sibling = parent.R;
             }
             sibling.C = parent.C;
             parent.C = sibling.R.C = false;
             d3_geom_voronoiRedBlackRotateLeft(this, parent);
             node = this._;
             break;
           }
         } else {
           sibling = parent.L;
           if (sibling.C) {
             sibling.C = false;
             parent.C = true;
             d3_geom_voronoiRedBlackRotateRight(this, parent);
             sibling = parent.L;
           }
           if (sibling.L && sibling.L.C || sibling.R && sibling.R.C) {
             if (!sibling.L || !sibling.L.C) {
               sibling.R.C = false;
               sibling.C = true;
               d3_geom_voronoiRedBlackRotateLeft(this, sibling);
               sibling = parent.L;
             }
             sibling.C = parent.C;
             parent.C = sibling.L.C = false;
             d3_geom_voronoiRedBlackRotateRight(this, parent);
             node = this._;
             break;
           }
         }
         sibling.C = true;
         node = parent;
         parent = parent.U;
       } while (!node.C);
       if (node) node.C = false;
     }
   };
   function d3_geom_voronoiRedBlackRotateLeft(tree, node) {
     var p = node, q = node.R, parent = p.U;
     if (parent) {
       if (parent.L === p) parent.L = q; else parent.R = q;
     } else {
       tree._ = q;
     }
     q.U = parent;
     p.U = q;
     p.R = q.L;
     if (p.R) p.R.U = p;
     q.L = p;
   }
   function d3_geom_voronoiRedBlackRotateRight(tree, node) {
     var p = node, q = node.L, parent = p.U;
     if (parent) {
       if (parent.L === p) parent.L = q; else parent.R = q;
     } else {
       tree._ = q;
     }
     q.U = parent;
     p.U = q;
     p.L = q.R;
     if (p.L) p.L.U = p;
     q.R = p;
   }
   function d3_geom_voronoiRedBlackFirst(node) {
     while (node.L) node = node.L;
     return node;
   }
   function d3_geom_voronoi(sites, bbox) {
     var site = sites.sort(d3_geom_voronoiVertexOrder).pop(), x0, y0, circle;
     d3_geom_voronoiEdges = [];
     d3_geom_voronoiCells = new Array(sites.length);
     d3_geom_voronoiBeaches = new d3_geom_voronoiRedBlackTree();
     d3_geom_voronoiCircles = new d3_geom_voronoiRedBlackTree();
     while (true) {
       circle = d3_geom_voronoiFirstCircle;
       if (site && (!circle || site.y < circle.y || site.y === circle.y && site.x < circle.x)) {
         if (site.x !== x0 || site.y !== y0) {
           d3_geom_voronoiCells[site.i] = new d3_geom_voronoiCell(site);
           d3_geom_voronoiAddBeach(site);
           x0 = site.x, y0 = site.y;
         }
         site = sites.pop();
       } else if (circle) {
         d3_geom_voronoiRemoveBeach(circle.arc);
       } else {
         break;
       }
     }
     if (bbox) d3_geom_voronoiClipEdges(bbox), d3_geom_voronoiCloseCells(bbox);
     var diagram = {
       cells: d3_geom_voronoiCells,
       edges: d3_geom_voronoiEdges
     };
     d3_geom_voronoiBeaches = d3_geom_voronoiCircles = d3_geom_voronoiEdges = d3_geom_voronoiCells = null;
     return diagram;
   }
   function d3_geom_voronoiVertexOrder(a, b) {
     return b.y - a.y || b.x - a.x;
   }
   d3.geom.voronoi = function(points) {
     var x = d3_geom_pointX, y = d3_geom_pointY, fx = x, fy = y, clipExtent = d3_geom_voronoiClipExtent;
     if (points) return voronoi(points);
     function voronoi(data) {
       var polygons = new Array(data.length), x0 = clipExtent[0][0], y0 = clipExtent[0][1], x1 = clipExtent[1][0], y1 = clipExtent[1][1];
       d3_geom_voronoi(sites(data), clipExtent).cells.forEach(function(cell, i) {
         var edges = cell.edges, site = cell.site, polygon = polygons[i] = edges.length ? edges.map(function(e) {
           var s = e.start();
           return [ s.x, s.y ];
         }) : site.x >= x0 && site.x <= x1 && site.y >= y0 && site.y <= y1 ? [ [ x0, y1 ], [ x1, y1 ], [ x1, y0 ], [ x0, y0 ] ] : [];
         polygon.point = data[i];
       });
       return polygons;
     }
     function sites(data) {
       return data.map(function(d, i) {
         return {
           x: Math.round(fx(d, i) / ε) * ε,
           y: Math.round(fy(d, i) / ε) * ε,
           i: i
         };
       });
     }
     voronoi.links = function(data) {
       return d3_geom_voronoi(sites(data)).edges.filter(function(edge) {
         return edge.l && edge.r;
       }).map(function(edge) {
         return {
           source: data[edge.l.i],
           target: data[edge.r.i]
         };
       });
     };
     voronoi.triangles = function(data) {
       var triangles = [];
       d3_geom_voronoi(sites(data)).cells.forEach(function(cell, i) {
         var site = cell.site, edges = cell.edges.sort(d3_geom_voronoiHalfEdgeOrder), j = -1, m = edges.length, e0, s0, e1 = edges[m - 1].edge, s1 = e1.l === site ? e1.r : e1.l;
         while (++j < m) {
           e0 = e1;
           s0 = s1;
           e1 = edges[j].edge;
           s1 = e1.l === site ? e1.r : e1.l;
           if (i < s0.i && i < s1.i && d3_geom_voronoiTriangleArea(site, s0, s1) < 0) {
             triangles.push([ data[i], data[s0.i], data[s1.i] ]);
           }
         }
       });
       return triangles;
     };
     voronoi.x = function(_) {
       return arguments.length ? (fx = d3_functor(x = _), voronoi) : x;
     };
     voronoi.y = function(_) {
       return arguments.length ? (fy = d3_functor(y = _), voronoi) : y;
     };
     voronoi.clipExtent = function(_) {
       if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent;
       clipExtent = _ == null ? d3_geom_voronoiClipExtent : _;
       return voronoi;
     };
     voronoi.size = function(_) {
       if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent && clipExtent[1];
       return voronoi.clipExtent(_ && [ [ 0, 0 ], _ ]);
     };
     return voronoi;
   };
   var d3_geom_voronoiClipExtent = [ [ -1e6, -1e6 ], [ 1e6, 1e6 ] ];
   function d3_geom_voronoiTriangleArea(a, b, c) {
     return (a.x - c.x) * (b.y - a.y) - (a.x - b.x) * (c.y - a.y);
   }
   d3.geom.delaunay = function(vertices) {
     return d3.geom.voronoi().triangles(vertices);
   };
   d3.geom.quadtree = function(points, x1, y1, x2, y2) {
     var x = d3_geom_pointX, y = d3_geom_pointY, compat;
     if (compat = arguments.length) {
       x = d3_geom_quadtreeCompatX;
       y = d3_geom_quadtreeCompatY;
       if (compat === 3) {
         y2 = y1;
         x2 = x1;
         y1 = x1 = 0;
       }
       return quadtree(points);
     }
     function quadtree(data) {
       var d, fx = d3_functor(x), fy = d3_functor(y), xs, ys, i, n, x1_, y1_, x2_, y2_;
       if (x1 != null) {
         x1_ = x1, y1_ = y1, x2_ = x2, y2_ = y2;
       } else {
         x2_ = y2_ = -(x1_ = y1_ = Infinity);
         xs = [], ys = [];
         n = data.length;
         if (compat) for (i = 0; i < n; ++i) {
           d = data[i];
           if (d.x < x1_) x1_ = d.x;
           if (d.y < y1_) y1_ = d.y;
           if (d.x > x2_) x2_ = d.x;
           if (d.y > y2_) y2_ = d.y;
           xs.push(d.x);
           ys.push(d.y);
         } else for (i = 0; i < n; ++i) {
           var x_ = +fx(d = data[i], i), y_ = +fy(d, i);
           if (x_ < x1_) x1_ = x_;
           if (y_ < y1_) y1_ = y_;
           if (x_ > x2_) x2_ = x_;
           if (y_ > y2_) y2_ = y_;
           xs.push(x_);
           ys.push(y_);
         }
       }
       var dx = x2_ - x1_, dy = y2_ - y1_;
       if (dx > dy) y2_ = y1_ + dx; else x2_ = x1_ + dy;
       function insert(n, d, x, y, x1, y1, x2, y2) {
         if (isNaN(x) || isNaN(y)) return;
         if (n.leaf) {
           var nx = n.x, ny = n.y;
           if (nx != null) {
             if (abs(nx - x) + abs(ny - y) < .01) {
               insertChild(n, d, x, y, x1, y1, x2, y2);
             } else {
               var nPoint = n.point;
               n.x = n.y = n.point = null;
               insertChild(n, nPoint, nx, ny, x1, y1, x2, y2);
               insertChild(n, d, x, y, x1, y1, x2, y2);
             }
           } else {
             n.x = x, n.y = y, n.point = d;
           }
         } else {
           insertChild(n, d, x, y, x1, y1, x2, y2);
         }
       }
       function insertChild(n, d, x, y, x1, y1, x2, y2) {
         var sx = (x1 + x2) * .5, sy = (y1 + y2) * .5, right = x >= sx, bottom = y >= sy, i = (bottom << 1) + right;
         n.leaf = false;
         n = n.nodes[i] || (n.nodes[i] = d3_geom_quadtreeNode());
         if (right) x1 = sx; else x2 = sx;
         if (bottom) y1 = sy; else y2 = sy;
         insert(n, d, x, y, x1, y1, x2, y2);
       }
       var root = d3_geom_quadtreeNode();
       root.add = function(d) {
         insert(root, d, +fx(d, ++i), +fy(d, i), x1_, y1_, x2_, y2_);
       };
       root.visit = function(f) {
         d3_geom_quadtreeVisit(f, root, x1_, y1_, x2_, y2_);
       };
       i = -1;
       if (x1 == null) {
         while (++i < n) {
           insert(root, data[i], xs[i], ys[i], x1_, y1_, x2_, y2_);
         }
         --i;
       } else data.forEach(root.add);
       xs = ys = data = d = null;
       return root;
     }
     quadtree.x = function(_) {
       return arguments.length ? (x = _, quadtree) : x;
     };
     quadtree.y = function(_) {
       return arguments.length ? (y = _, quadtree) : y;
     };
     quadtree.extent = function(_) {
       if (!arguments.length) return x1 == null ? null : [ [ x1, y1 ], [ x2, y2 ] ];
       if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = +_[0][0], y1 = +_[0][1], x2 = +_[1][0],
       y2 = +_[1][1];
       return quadtree;
     };
     quadtree.size = function(_) {
       if (!arguments.length) return x1 == null ? null : [ x2 - x1, y2 - y1 ];
       if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = y1 = 0, x2 = +_[0], y2 = +_[1];
       return quadtree;
     };
     return quadtree;
   };
   function d3_geom_quadtreeCompatX(d) {
     return d.x;
   }
   function d3_geom_quadtreeCompatY(d) {
     return d.y;
   }
   function d3_geom_quadtreeNode() {
     return {
       leaf: true,
       nodes: [],
       point: null,
       x: null,
       y: null
     };
   }
   function d3_geom_quadtreeVisit(f, node, x1, y1, x2, y2) {
     if (!f(node, x1, y1, x2, y2)) {
       var sx = (x1 + x2) * .5, sy = (y1 + y2) * .5, children = node.nodes;
       if (children[0]) d3_geom_quadtreeVisit(f, children[0], x1, y1, sx, sy);
       if (children[1]) d3_geom_quadtreeVisit(f, children[1], sx, y1, x2, sy);
       if (children[2]) d3_geom_quadtreeVisit(f, children[2], x1, sy, sx, y2);
       if (children[3]) d3_geom_quadtreeVisit(f, children[3], sx, sy, x2, y2);
     }
   }
   d3.interpolateRgb = d3_interpolateRgb;
   function d3_interpolateRgb(a, b) {
     a = d3.rgb(a);
     b = d3.rgb(b);
     var ar = a.r, ag = a.g, ab = a.b, br = b.r - ar, bg = b.g - ag, bb = b.b - ab;
     return function(t) {
       return "#" + d3_rgb_hex(Math.round(ar + br * t)) + d3_rgb_hex(Math.round(ag + bg * t)) + d3_rgb_hex(Math.round(ab + bb * t));
     };
   }
   d3.interpolateObject = d3_interpolateObject;
   function d3_interpolateObject(a, b) {
     var i = {}, c = {}, k;
     for (k in a) {
       if (k in b) {
         i[k] = d3_interpolate(a[k], b[k]);
       } else {
         c[k] = a[k];
       }
     }
     for (k in b) {
       if (!(k in a)) {
         c[k] = b[k];
       }
     }
     return function(t) {
       for (k in i) c[k] = i[k](t);
       return c;
     };
   }
   d3.interpolateNumber = d3_interpolateNumber;
   function d3_interpolateNumber(a, b) {
     b -= a = +a;
     return function(t) {
       return a + b * t;
     };
   }
   d3.interpolateString = d3_interpolateString;
   function d3_interpolateString(a, b) {
     var m, i, j, s0 = 0, s1 = 0, s = [], q = [], n, o;
     a = a + "", b = b + "";
     d3_interpolate_number.lastIndex = 0;
     for (i = 0; m = d3_interpolate_number.exec(b); ++i) {
       if (m.index) s.push(b.substring(s0, s1 = m.index));
       q.push({
         i: s.length,
         x: m[0]
       });
       s.push(null);
       s0 = d3_interpolate_number.lastIndex;
     }
     if (s0 < b.length) s.push(b.substring(s0));
     for (i = 0, n = q.length; (m = d3_interpolate_number.exec(a)) && i < n; ++i) {
       o = q[i];
       if (o.x == m[0]) {
         if (o.i) {
           if (s[o.i + 1] == null) {
             s[o.i - 1] += o.x;
             s.splice(o.i, 1);
             for (j = i + 1; j < n; ++j) q[j].i--;
           } else {
             s[o.i - 1] += o.x + s[o.i + 1];
             s.splice(o.i, 2);
             for (j = i + 1; j < n; ++j) q[j].i -= 2;
           }
         } else {
           if (s[o.i + 1] == null) {
             s[o.i] = o.x;
           } else {
             s[o.i] = o.x + s[o.i + 1];
             s.splice(o.i + 1, 1);
             for (j = i + 1; j < n; ++j) q[j].i--;
           }
         }
         q.splice(i, 1);
         n--;
         i--;
       } else {
         o.x = d3_interpolateNumber(parseFloat(m[0]), parseFloat(o.x));
       }
     }
     while (i < n) {
       o = q.pop();
       if (s[o.i + 1] == null) {
         s[o.i] = o.x;
       } else {
         s[o.i] = o.x + s[o.i + 1];
         s.splice(o.i + 1, 1);
       }
       n--;
     }
     if (s.length === 1) {
       return s[0] == null ? (o = q[0].x, function(t) {
         return o(t) + "";
       }) : function() {
         return b;
       };
     }
     return function(t) {
       for (i = 0; i < n; ++i) s[(o = q[i]).i] = o.x(t);
       return s.join("");
     };
   }
   var d3_interpolate_number = /[-+]?(?:\d+\.?\d*|\.?\d+)(?:[eE][-+]?\d+)?/g;
   d3.interpolate = d3_interpolate;
   function d3_interpolate(a, b) {
     var i = d3.interpolators.length, f;
     while (--i >= 0 && !(f = d3.interpolators[i](a, b))) ;
     return f;
   }
   d3.interpolators = [ function(a, b) {
     var t = typeof b;
     return (t === "string" ? d3_rgb_names.has(b) || /^(#|rgb\(|hsl\()/.test(b) ? d3_interpolateRgb : d3_interpolateString : b instanceof d3_Color ? d3_interpolateRgb : t === "object" ? Array.isArray(b) ? d3_interpolateArray : d3_interpolateObject : d3_interpolateNumber)(a, b);
   } ];
   d3.interpolateArray = d3_interpolateArray;
   function d3_interpolateArray(a, b) {
     var x = [], c = [], na = a.length, nb = b.length, n0 = Math.min(a.length, b.length), i;
     for (i = 0; i < n0; ++i) x.push(d3_interpolate(a[i], b[i]));
     for (;i < na; ++i) c[i] = a[i];
     for (;i < nb; ++i) c[i] = b[i];
     return function(t) {
       for (i = 0; i < n0; ++i) c[i] = x[i](t);
       return c;
     };
   }
   var d3_ease_default = function() {
     return d3_identity;
   };
   var d3_ease = d3.map({
     linear: d3_ease_default,
     poly: d3_ease_poly,
     quad: function() {
       return d3_ease_quad;
     },
     cubic: function() {
       return d3_ease_cubic;
     },
     sin: function() {
       return d3_ease_sin;
     },
     exp: function() {
       return d3_ease_exp;
     },
     circle: function() {
       return d3_ease_circle;
     },
     elastic: d3_ease_elastic,
     back: d3_ease_back,
     bounce: function() {
       return d3_ease_bounce;
     }
   });
   var d3_ease_mode = d3.map({
     "in": d3_identity,
     out: d3_ease_reverse,
     "in-out": d3_ease_reflect,
     "out-in": function(f) {
       return d3_ease_reflect(d3_ease_reverse(f));
     }
   });
   d3.ease = function(name) {
     var i = name.indexOf("-"), t = i >= 0 ? name.substring(0, i) : name, m = i >= 0 ? name.substring(i + 1) : "in";
     t = d3_ease.get(t) || d3_ease_default;
     m = d3_ease_mode.get(m) || d3_identity;
     return d3_ease_clamp(m(t.apply(null, d3_arraySlice.call(arguments, 1))));
   };
   function d3_ease_clamp(f) {
     return function(t) {
       return t <= 0 ? 0 : t >= 1 ? 1 : f(t);
     };
   }
   function d3_ease_reverse(f) {
     return function(t) {
       return 1 - f(1 - t);
     };
   }
   function d3_ease_reflect(f) {
     return function(t) {
       return .5 * (t < .5 ? f(2 * t) : 2 - f(2 - 2 * t));
     };
   }
   function d3_ease_quad(t) {
     return t * t;
   }
   function d3_ease_cubic(t) {
     return t * t * t;
   }
   function d3_ease_cubicInOut(t) {
     if (t <= 0) return 0;
     if (t >= 1) return 1;
     var t2 = t * t, t3 = t2 * t;
     return 4 * (t < .5 ? t3 : 3 * (t - t2) + t3 - .75);
   }
   function d3_ease_poly(e) {
     return function(t) {
       return Math.pow(t, e);
     };
   }
   function d3_ease_sin(t) {
     return 1 - Math.cos(t * halfπ);
   }
   function d3_ease_exp(t) {
     return Math.pow(2, 10 * (t - 1));
   }
   function d3_ease_circle(t) {
     return 1 - Math.sqrt(1 - t * t);
   }
   function d3_ease_elastic(a, p) {
     var s;
     if (arguments.length < 2) p = .45;
     if (arguments.length) s = p / τ * Math.asin(1 / a); else a = 1, s = p / 4;
     return function(t) {
       return 1 + a * Math.pow(2, -10 * t) * Math.sin((t - s) * τ / p);
     };
   }
   function d3_ease_back(s) {
     if (!s) s = 1.70158;
     return function(t) {
       return t * t * ((s + 1) * t - s);
     };
   }
   function d3_ease_bounce(t) {
     return t < 1 / 2.75 ? 7.5625 * t * t : t < 2 / 2.75 ? 7.5625 * (t -= 1.5 / 2.75) * t + .75 : t < 2.5 / 2.75 ? 7.5625 * (t -= 2.25 / 2.75) * t + .9375 : 7.5625 * (t -= 2.625 / 2.75) * t + .984375;
   }
   d3.interpolateHcl = d3_interpolateHcl;
   function d3_interpolateHcl(a, b) {
     a = d3.hcl(a);
     b = d3.hcl(b);
     var ah = a.h, ac = a.c, al = a.l, bh = b.h - ah, bc = b.c - ac, bl = b.l - al;
     if (isNaN(bc)) bc = 0, ac = isNaN(ac) ? b.c : ac;
     if (isNaN(bh)) bh = 0, ah = isNaN(ah) ? b.h : ah; else if (bh > 180) bh -= 360; else if (bh < -180) bh += 360;
     return function(t) {
       return d3_hcl_lab(ah + bh * t, ac + bc * t, al + bl * t) + "";
     };
   }
   d3.interpolateHsl = d3_interpolateHsl;
   function d3_interpolateHsl(a, b) {
     a = d3.hsl(a);
     b = d3.hsl(b);
     var ah = a.h, as = a.s, al = a.l, bh = b.h - ah, bs = b.s - as, bl = b.l - al;
     if (isNaN(bs)) bs = 0, as = isNaN(as) ? b.s : as;
     if (isNaN(bh)) bh = 0, ah = isNaN(ah) ? b.h : ah; else if (bh > 180) bh -= 360; else if (bh < -180) bh += 360;
     return function(t) {
       return d3_hsl_rgb(ah + bh * t, as + bs * t, al + bl * t) + "";
     };
   }
   d3.interpolateLab = d3_interpolateLab;
   function d3_interpolateLab(a, b) {
     a = d3.lab(a);
     b = d3.lab(b);
     var al = a.l, aa = a.a, ab = a.b, bl = b.l - al, ba = b.a - aa, bb = b.b - ab;
     return function(t) {
       return d3_lab_rgb(al + bl * t, aa + ba * t, ab + bb * t) + "";
     };
   }
   d3.interpolateRound = d3_interpolateRound;
   function d3_interpolateRound(a, b) {
     b -= a;
     return function(t) {
       return Math.round(a + b * t);
     };
   }
   d3.transform = function(string) {
     var g = d3_document.createElementNS(d3.ns.prefix.svg, "g");
     return (d3.transform = function(string) {
       if (string != null) {
         g.setAttribute("transform", string);
         var t = g.transform.baseVal.consolidate();
       }
       return new d3_transform(t ? t.matrix : d3_transformIdentity);
     })(string);
   };
   function d3_transform(m) {
     var r0 = [ m.a, m.b ], r1 = [ m.c, m.d ], kx = d3_transformNormalize(r0), kz = d3_transformDot(r0, r1), ky = d3_transformNormalize(d3_transformCombine(r1, r0, -kz)) || 0;
     if (r0[0] * r1[1] < r1[0] * r0[1]) {
       r0[0] *= -1;
       r0[1] *= -1;
       kx *= -1;
       kz *= -1;
     }
     this.rotate = (kx ? Math.atan2(r0[1], r0[0]) : Math.atan2(-r1[0], r1[1])) * d3_degrees;
     this.translate = [ m.e, m.f ];
     this.scale = [ kx, ky ];
     this.skew = ky ? Math.atan2(kz, ky) * d3_degrees : 0;
   }
   d3_transform.prototype.toString = function() {
     return "translate(" + this.translate + ")rotate(" + this.rotate + ")skewX(" + this.skew + ")scale(" + this.scale + ")";
   };
   function d3_transformDot(a, b) {
     return a[0] * b[0] + a[1] * b[1];
   }
   function d3_transformNormalize(a) {
     var k = Math.sqrt(d3_transformDot(a, a));
     if (k) {
       a[0] /= k;
       a[1] /= k;
     }
     return k;
   }
   function d3_transformCombine(a, b, k) {
     a[0] += k * b[0];
     a[1] += k * b[1];
     return a;
   }
   var d3_transformIdentity = {
     a: 1,
     b: 0,
     c: 0,
     d: 1,
     e: 0,
     f: 0
   };
   d3.interpolateTransform = d3_interpolateTransform;
   function d3_interpolateTransform(a, b) {
     var s = [], q = [], n, A = d3.transform(a), B = d3.transform(b), ta = A.translate, tb = B.translate, ra = A.rotate, rb = B.rotate, wa = A.skew, wb = B.skew, ka = A.scale, kb = B.scale;
     if (ta[0] != tb[0] || ta[1] != tb[1]) {
       s.push("translate(", null, ",", null, ")");
       q.push({
         i: 1,
         x: d3_interpolateNumber(ta[0], tb[0])
       }, {
         i: 3,
         x: d3_interpolateNumber(ta[1], tb[1])
       });
     } else if (tb[0] || tb[1]) {
       s.push("translate(" + tb + ")");
     } else {
       s.push("");
     }
     if (ra != rb) {
       if (ra - rb > 180) rb += 360; else if (rb - ra > 180) ra += 360;
       q.push({
         i: s.push(s.pop() + "rotate(", null, ")") - 2,
         x: d3_interpolateNumber(ra, rb)
       });
     } else if (rb) {
       s.push(s.pop() + "rotate(" + rb + ")");
     }
     if (wa != wb) {
       q.push({
         i: s.push(s.pop() + "skewX(", null, ")") - 2,
         x: d3_interpolateNumber(wa, wb)
       });
     } else if (wb) {
       s.push(s.pop() + "skewX(" + wb + ")");
     }
     if (ka[0] != kb[0] || ka[1] != kb[1]) {
       n = s.push(s.pop() + "scale(", null, ",", null, ")");
       q.push({
         i: n - 4,
         x: d3_interpolateNumber(ka[0], kb[0])
       }, {
         i: n - 2,
         x: d3_interpolateNumber(ka[1], kb[1])
       });
     } else if (kb[0] != 1 || kb[1] != 1) {
       s.push(s.pop() + "scale(" + kb + ")");
     }
     n = q.length;
     return function(t) {
       var i = -1, o;
       while (++i < n) s[(o = q[i]).i] = o.x(t);
       return s.join("");
     };
   }
   function d3_uninterpolateNumber(a, b) {
     b = b - (a = +a) ? 1 / (b - a) : 0;
     return function(x) {
       return (x - a) * b;
     };
   }
   function d3_uninterpolateClamp(a, b) {
     b = b - (a = +a) ? 1 / (b - a) : 0;
     return function(x) {
       return Math.max(0, Math.min(1, (x - a) * b));
     };
   }
   d3.layout = {};
   d3.layout.bundle = function() {
     return function(links) {
       var paths = [], i = -1, n = links.length;
       while (++i < n) paths.push(d3_layout_bundlePath(links[i]));
       return paths;
     };
   };
   function d3_layout_bundlePath(link) {
     var start = link.source, end = link.target, lca = d3_layout_bundleLeastCommonAncestor(start, end), points = [ start ];
     while (start !== lca) {
       start = start.parent;
       points.push(start);
     }
     var k = points.length;
     while (end !== lca) {
       points.splice(k, 0, end);
       end = end.parent;
     }
     return points;
   }
   function d3_layout_bundleAncestors(node) {
     var ancestors = [], parent = node.parent;
     while (parent != null) {
       ancestors.push(node);
       node = parent;
       parent = parent.parent;
     }
     ancestors.push(node);
     return ancestors;
   }
   function d3_layout_bundleLeastCommonAncestor(a, b) {
     if (a === b) return a;
     var aNodes = d3_layout_bundleAncestors(a), bNodes = d3_layout_bundleAncestors(b), aNode = aNodes.pop(), bNode = bNodes.pop(), sharedNode = null;
     while (aNode === bNode) {
       sharedNode = aNode;
       aNode = aNodes.pop();
       bNode = bNodes.pop();
     }
     return sharedNode;
   }
   d3.layout.chord = function() {
     var chord = {}, chords, groups, matrix, n, padding = 0, sortGroups, sortSubgroups, sortChords;
     function relayout() {
       var subgroups = {}, groupSums = [], groupIndex = d3.range(n), subgroupIndex = [], k, x, x0, i, j;
       chords = [];
       groups = [];
       k = 0, i = -1;
       while (++i < n) {
         x = 0, j = -1;
         while (++j < n) {
           x += matrix[i][j];
         }
         groupSums.push(x);
         subgroupIndex.push(d3.range(n));
         k += x;
       }
       if (sortGroups) {
         groupIndex.sort(function(a, b) {
           return sortGroups(groupSums[a], groupSums[b]);
         });
       }
       if (sortSubgroups) {
         subgroupIndex.forEach(function(d, i) {
           d.sort(function(a, b) {
             return sortSubgroups(matrix[i][a], matrix[i][b]);
           });
         });
       }
       k = (τ - padding * n) / k;
       x = 0, i = -1;
       while (++i < n) {
         x0 = x, j = -1;
         while (++j < n) {
           var di = groupIndex[i], dj = subgroupIndex[di][j], v = matrix[di][dj], a0 = x, a1 = x += v * k;
           subgroups[di + "-" + dj] = {
             index: di,
             subindex: dj,
             startAngle: a0,
             endAngle: a1,
             value: v
           };
         }
         groups[di] = {
           index: di,
           startAngle: x0,
           endAngle: x,
           value: (x - x0) / k
         };
         x += padding;
       }
       i = -1;
       while (++i < n) {
         j = i - 1;
         while (++j < n) {
           var source = subgroups[i + "-" + j], target = subgroups[j + "-" + i];
           if (source.value || target.value) {
             chords.push(source.value < target.value ? {
               source: target,
               target: source
             } : {
               source: source,
               target: target
             });
           }
         }
       }
       if (sortChords) resort();
     }
     function resort() {
       chords.sort(function(a, b) {
         return sortChords((a.source.value + a.target.value) / 2, (b.source.value + b.target.value) / 2);
       });
     }
     chord.matrix = function(x) {
       if (!arguments.length) return matrix;
       n = (matrix = x) && matrix.length;
       chords = groups = null;
       return chord;
     };
     chord.padding = function(x) {
       if (!arguments.length) return padding;
       padding = x;
       chords = groups = null;
       return chord;
     };
     chord.sortGroups = function(x) {
       if (!arguments.length) return sortGroups;
       sortGroups = x;
       chords = groups = null;
       return chord;
     };
     chord.sortSubgroups = function(x) {
       if (!arguments.length) return sortSubgroups;
       sortSubgroups = x;
       chords = null;
       return chord;
     };
     chord.sortChords = function(x) {
       if (!arguments.length) return sortChords;
       sortChords = x;
       if (chords) resort();
       return chord;
     };
     chord.chords = function() {
       if (!chords) relayout();
       return chords;
     };
     chord.groups = function() {
       if (!groups) relayout();
       return groups;
     };
     return chord;
   };
   d3.layout.force = function() {
     var force = {}, event = d3.dispatch("start", "tick", "end"), size = [ 1, 1 ], drag, alpha, friction = .9, linkDistance = d3_layout_forceLinkDistance, linkStrength = d3_layout_forceLinkStrength, charge = -30, chargeDistance2 = d3_layout_forceChargeDistance2, gravity = .1, theta2 = .64, nodes = [], links = [], distances, strengths, charges;
     function repulse(node) {
       return function(quad, x1, _, x2) {
         if (quad.point !== node) {
           var dx = quad.cx - node.x, dy = quad.cy - node.y, dw = x2 - x1, dn = dx * dx + dy * dy;
           if (dw * dw / theta2 < dn) {
             if (dn < chargeDistance2) {
               var k = quad.charge / dn;
               node.px -= dx * k;
               node.py -= dy * k;
             }
             return true;
           }
           if (quad.point && dn && dn < chargeDistance2) {
             var k = quad.pointCharge / dn;
             node.px -= dx * k;
             node.py -= dy * k;
           }
         }
         return !quad.charge;
       };
     }
     force.tick = function() {
       if ((alpha *= .99) < .005) {
         event.end({
           type: "end",
           alpha: alpha = 0
         });
         return true;
       }
       var n = nodes.length, m = links.length, q, i, o, s, t, l, k, x, y;
       for (i = 0; i < m; ++i) {
         o = links[i];
         s = o.source;
         t = o.target;
         x = t.x - s.x;
         y = t.y - s.y;
         if (l = x * x + y * y) {
           l = alpha * strengths[i] * ((l = Math.sqrt(l)) - distances[i]) / l;
           x *= l;
           y *= l;
           t.x -= x * (k = s.weight / (t.weight + s.weight));
           t.y -= y * k;
           s.x += x * (k = 1 - k);
           s.y += y * k;
         }
       }
       if (k = alpha * gravity) {
         x = size[0] / 2;
         y = size[1] / 2;
         i = -1;
         if (k) while (++i < n) {
           o = nodes[i];
           o.x += (x - o.x) * k;
           o.y += (y - o.y) * k;
         }
       }
       if (charge) {
         d3_layout_forceAccumulate(q = d3.geom.quadtree(nodes), alpha, charges);
         i = -1;
         while (++i < n) {
           if (!(o = nodes[i]).fixed) {
             q.visit(repulse(o));
           }
         }
       }
       i = -1;
       while (++i < n) {
         o = nodes[i];
         if (o.fixed) {
           o.x = o.px;
           o.y = o.py;
         } else {
           o.x -= (o.px - (o.px = o.x)) * friction;
           o.y -= (o.py - (o.py = o.y)) * friction;
         }
       }
       event.tick({
         type: "tick",
         alpha: alpha
       });
     };
     force.nodes = function(x) {
       if (!arguments.length) return nodes;
       nodes = x;
       return force;
     };
     force.links = function(x) {
       if (!arguments.length) return links;
       links = x;
       return force;
     };
     force.size = function(x) {
       if (!arguments.length) return size;
       size = x;
       return force;
     };
     force.linkDistance = function(x) {
       if (!arguments.length) return linkDistance;
       linkDistance = typeof x === "function" ? x : +x;
       return force;
     };
     force.distance = force.linkDistance;
     force.linkStrength = function(x) {
       if (!arguments.length) return linkStrength;
       linkStrength = typeof x === "function" ? x : +x;
       return force;
     };
     force.friction = function(x) {
       if (!arguments.length) return friction;
       friction = +x;
       return force;
     };
     force.charge = function(x) {
       if (!arguments.length) return charge;
       charge = typeof x === "function" ? x : +x;
       return force;
     };
     force.chargeDistance = function(x) {
       if (!arguments.length) return Math.sqrt(chargeDistance2);
       chargeDistance2 = x * x;
       return force;
     };
     force.gravity = function(x) {
       if (!arguments.length) return gravity;
       gravity = +x;
       return force;
     };
     force.theta = function(x) {
       if (!arguments.length) return Math.sqrt(theta2);
       theta2 = x * x;
       return force;
     };
     force.alpha = function(x) {
       if (!arguments.length) return alpha;
       x = +x;
       if (alpha) {
         if (x > 0) alpha = x; else alpha = 0;
       } else if (x > 0) {
         event.start({
           type: "start",
           alpha: alpha = x
         });
         d3.timer(force.tick);
       }
       return force;
     };
     force.start = function() {
       var i, n = nodes.length, m = links.length, w = size[0], h = size[1], neighbors, o;
       for (i = 0; i < n; ++i) {
         (o = nodes[i]).index = i;
         o.weight = 0;
       }
       for (i = 0; i < m; ++i) {
         o = links[i];
         if (typeof o.source == "number") o.source = nodes[o.source];
         if (typeof o.target == "number") o.target = nodes[o.target];
         ++o.source.weight;
         ++o.target.weight;
       }
       for (i = 0; i < n; ++i) {
         o = nodes[i];
         if (isNaN(o.x)) o.x = position("x", w);
         if (isNaN(o.y)) o.y = position("y", h);
         if (isNaN(o.px)) o.px = o.x;
         if (isNaN(o.py)) o.py = o.y;
       }
       distances = [];
       if (typeof linkDistance === "function") for (i = 0; i < m; ++i) distances[i] = +linkDistance.call(this, links[i], i); else for (i = 0; i < m; ++i) distances[i] = linkDistance;
       strengths = [];
       if (typeof linkStrength === "function") for (i = 0; i < m; ++i) strengths[i] = +linkStrength.call(this, links[i], i); else for (i = 0; i < m; ++i) strengths[i] = linkStrength;
       charges = [];
       if (typeof charge === "function") for (i = 0; i < n; ++i) charges[i] = +charge.call(this, nodes[i], i); else for (i = 0; i < n; ++i) charges[i] = charge;
       function position(dimension, size) {
         if (!neighbors) {
           neighbors = new Array(n);
           for (j = 0; j < n; ++j) {
             neighbors[j] = [];
           }
           for (j = 0; j < m; ++j) {
             var o = links[j];
             neighbors[o.source.index].push(o.target);
             neighbors[o.target.index].push(o.source);
           }
         }
         var candidates = neighbors[i], j = -1, m = candidates.length, x;
         while (++j < m) if (!isNaN(x = candidates[j][dimension])) return x;
         return Math.random() * size;
       }
       return force.resume();
     };
     force.resume = function() {
       return force.alpha(.1);
     };
     force.stop = function() {
       return force.alpha(0);
     };
     force.drag = function() {
       if (!drag) drag = d3.behavior.drag().origin(d3_identity).on("dragstart.force", d3_layout_forceDragstart).on("drag.force", dragmove).on("dragend.force", d3_layout_forceDragend);
       if (!arguments.length) return drag;
       this.on("mouseover.force", d3_layout_forceMouseover).on("mouseout.force", d3_layout_forceMouseout).call(drag);
     };
     function dragmove(d) {
       d.px = d3.event.x, d.py = d3.event.y;
       force.resume();
     }
     return d3.rebind(force, event, "on");
   };
   function d3_layout_forceDragstart(d) {
     d.fixed |= 2;
   }
   function d3_layout_forceDragend(d) {
     d.fixed &= ~6;
   }
   function d3_layout_forceMouseover(d) {
     d.fixed |= 4;
     d.px = d.x, d.py = d.y;
   }
   function d3_layout_forceMouseout(d) {
     d.fixed &= ~4;
   }
   function d3_layout_forceAccumulate(quad, alpha, charges) {
     var cx = 0, cy = 0;
     quad.charge = 0;
     if (!quad.leaf) {
       var nodes = quad.nodes, n = nodes.length, i = -1, c;
       while (++i < n) {
         c = nodes[i];
         if (c == null) continue;
         d3_layout_forceAccumulate(c, alpha, charges);
         quad.charge += c.charge;
         cx += c.charge * c.cx;
         cy += c.charge * c.cy;
       }
     }
     if (quad.point) {
       if (!quad.leaf) {
         quad.point.x += Math.random() - .5;
         quad.point.y += Math.random() - .5;
       }
       var k = alpha * charges[quad.point.index];
       quad.charge += quad.pointCharge = k;
       cx += k * quad.point.x;
       cy += k * quad.point.y;
     }
     quad.cx = cx / quad.charge;
     quad.cy = cy / quad.charge;
   }
   var d3_layout_forceLinkDistance = 20, d3_layout_forceLinkStrength = 1, d3_layout_forceChargeDistance2 = Infinity;
   d3.layout.hierarchy = function() {
     var sort = d3_layout_hierarchySort, children = d3_layout_hierarchyChildren, value = d3_layout_hierarchyValue;
     function recurse(node, depth, nodes) {
       var childs = children.call(hierarchy, node, depth);
       node.depth = depth;
       nodes.push(node);
       if (childs && (n = childs.length)) {
         var i = -1, n, c = node.children = new Array(n), v = 0, j = depth + 1, d;
         while (++i < n) {
           d = c[i] = recurse(childs[i], j, nodes);
           d.parent = node;
           v += d.value;
         }
         if (sort) c.sort(sort);
         if (value) node.value = v;
       } else {
         delete node.children;
         if (value) {
           node.value = +value.call(hierarchy, node, depth) || 0;
         }
       }
       return node;
     }
     function revalue(node, depth) {
       var children = node.children, v = 0;
       if (children && (n = children.length)) {
         var i = -1, n, j = depth + 1;
         while (++i < n) v += revalue(children[i], j);
       } else if (value) {
         v = +value.call(hierarchy, node, depth) || 0;
       }
       if (value) node.value = v;
       return v;
     }
     function hierarchy(d) {
       var nodes = [];
       recurse(d, 0, nodes);
       return nodes;
     }
     hierarchy.sort = function(x) {
       if (!arguments.length) return sort;
       sort = x;
       return hierarchy;
     };
     hierarchy.children = function(x) {
       if (!arguments.length) return children;
       children = x;
       return hierarchy;
     };
     hierarchy.value = function(x) {
       if (!arguments.length) return value;
       value = x;
       return hierarchy;
     };
     hierarchy.revalue = function(root) {
       revalue(root, 0);
       return root;
     };
     return hierarchy;
   };
   function d3_layout_hierarchyRebind(object, hierarchy) {
     d3.rebind(object, hierarchy, "sort", "children", "value");
     object.nodes = object;
     object.links = d3_layout_hierarchyLinks;
     return object;
   }
   function d3_layout_hierarchyChildren(d) {
     return d.children;
   }
   function d3_layout_hierarchyValue(d) {
     return d.value;
   }
   function d3_layout_hierarchySort(a, b) {
     return b.value - a.value;
   }
   function d3_layout_hierarchyLinks(nodes) {
     return d3.merge(nodes.map(function(parent) {
       return (parent.children || []).map(function(child) {
         return {
           source: parent,
           target: child
         };
       });
     }));
   }
   d3.layout.partition = function() {
     var hierarchy = d3.layout.hierarchy(), size = [ 1, 1 ];
     function position(node, x, dx, dy) {
       var children = node.children;
       node.x = x;
       node.y = node.depth * dy;
       node.dx = dx;
       node.dy = dy;
       if (children && (n = children.length)) {
         var i = -1, n, c, d;
         dx = node.value ? dx / node.value : 0;
         while (++i < n) {
           position(c = children[i], x, d = c.value * dx, dy);
           x += d;
         }
       }
     }
     function depth(node) {
       var children = node.children, d = 0;
       if (children && (n = children.length)) {
         var i = -1, n;
         while (++i < n) d = Math.max(d, depth(children[i]));
       }
       return 1 + d;
     }
     function partition(d, i) {
       var nodes = hierarchy.call(this, d, i);
       position(nodes[0], 0, size[0], size[1] / depth(nodes[0]));
       return nodes;
     }
     partition.size = function(x) {
       if (!arguments.length) return size;
       size = x;
       return partition;
     };
     return d3_layout_hierarchyRebind(partition, hierarchy);
   };
   d3.layout.pie = function() {
     var value = Number, sort = d3_layout_pieSortByValue, startAngle = 0, endAngle = τ;
     function pie(data) {
       var values = data.map(function(d, i) {
         return +value.call(pie, d, i);
       });
       var a = +(typeof startAngle === "function" ? startAngle.apply(this, arguments) : startAngle);
       var k = ((typeof endAngle === "function" ? endAngle.apply(this, arguments) : endAngle) - a) / d3.sum(values);
       var index = d3.range(data.length);
       if (sort != null) index.sort(sort === d3_layout_pieSortByValue ? function(i, j) {
         return values[j] - values[i];
       } : function(i, j) {
         return sort(data[i], data[j]);
       });
       var arcs = [];
       index.forEach(function(i) {
         var d;
         arcs[i] = {
           data: data[i],
           value: d = values[i],
           startAngle: a,
           endAngle: a += d * k
         };
       });
       return arcs;
     }
     pie.value = function(x) {
       if (!arguments.length) return value;
       value = x;
       return pie;
     };
     pie.sort = function(x) {
       if (!arguments.length) return sort;
       sort = x;
       return pie;
     };
     pie.startAngle = function(x) {
       if (!arguments.length) return startAngle;
       startAngle = x;
       return pie;
     };
     pie.endAngle = function(x) {
       if (!arguments.length) return endAngle;
       endAngle = x;
       return pie;
     };
     return pie;
   };
   var d3_layout_pieSortByValue = {};
   d3.layout.stack = function() {
     var values = d3_identity, order = d3_layout_stackOrderDefault, offset = d3_layout_stackOffsetZero, out = d3_layout_stackOut, x = d3_layout_stackX, y = d3_layout_stackY;
     function stack(data, index) {
       var series = data.map(function(d, i) {
         return values.call(stack, d, i);
       });
       var points = series.map(function(d) {
         return d.map(function(v, i) {
           return [ x.call(stack, v, i), y.call(stack, v, i) ];
         });
       });
       var orders = order.call(stack, points, index);
       series = d3.permute(series, orders);
       points = d3.permute(points, orders);
       var offsets = offset.call(stack, points, index);
       var n = series.length, m = series[0].length, i, j, o;
       for (j = 0; j < m; ++j) {
         out.call(stack, series[0][j], o = offsets[j], points[0][j][1]);
         for (i = 1; i < n; ++i) {
           out.call(stack, series[i][j], o += points[i - 1][j][1], points[i][j][1]);
         }
       }
       return data;
     }
     stack.values = function(x) {
       if (!arguments.length) return values;
       values = x;
       return stack;
     };
     stack.order = function(x) {
       if (!arguments.length) return order;
       order = typeof x === "function" ? x : d3_layout_stackOrders.get(x) || d3_layout_stackOrderDefault;
       return stack;
     };
     stack.offset = function(x) {
       if (!arguments.length) return offset;
       offset = typeof x === "function" ? x : d3_layout_stackOffsets.get(x) || d3_layout_stackOffsetZero;
       return stack;
     };
     stack.x = function(z) {
       if (!arguments.length) return x;
       x = z;
       return stack;
     };
     stack.y = function(z) {
       if (!arguments.length) return y;
       y = z;
       return stack;
     };
     stack.out = function(z) {
       if (!arguments.length) return out;
       out = z;
       return stack;
     };
     return stack;
   };
   function d3_layout_stackX(d) {
     return d.x;
   }
   function d3_layout_stackY(d) {
     return d.y;
   }
   function d3_layout_stackOut(d, y0, y) {
     d.y0 = y0;
     d.y = y;
   }
   var d3_layout_stackOrders = d3.map({
     "inside-out": function(data) {
       var n = data.length, i, j, max = data.map(d3_layout_stackMaxIndex), sums = data.map(d3_layout_stackReduceSum), index = d3.range(n).sort(function(a, b) {
         return max[a] - max[b];
       }), top = 0, bottom = 0, tops = [], bottoms = [];
       for (i = 0; i < n; ++i) {
         j = index[i];
         if (top < bottom) {
           top += sums[j];
           tops.push(j);
         } else {
           bottom += sums[j];
           bottoms.push(j);
         }
       }
       return bottoms.reverse().concat(tops);
     },
     reverse: function(data) {
       return d3.range(data.length).reverse();
     },
     "default": d3_layout_stackOrderDefault
   });
   var d3_layout_stackOffsets = d3.map({
     silhouette: function(data) {
       var n = data.length, m = data[0].length, sums = [], max = 0, i, j, o, y0 = [];
       for (j = 0; j < m; ++j) {
         for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
         if (o > max) max = o;
         sums.push(o);
       }
       for (j = 0; j < m; ++j) {
         y0[j] = (max - sums[j]) / 2;
       }
       return y0;
     },
     wiggle: function(data) {
       var n = data.length, x = data[0], m = x.length, i, j, k, s1, s2, s3, dx, o, o0, y0 = [];
       y0[0] = o = o0 = 0;
       for (j = 1; j < m; ++j) {
         for (i = 0, s1 = 0; i < n; ++i) s1 += data[i][j][1];
         for (i = 0, s2 = 0, dx = x[j][0] - x[j - 1][0]; i < n; ++i) {
           for (k = 0, s3 = (data[i][j][1] - data[i][j - 1][1]) / (2 * dx); k < i; ++k) {
             s3 += (data[k][j][1] - data[k][j - 1][1]) / dx;
           }
           s2 += s3 * data[i][j][1];
         }
         y0[j] = o -= s1 ? s2 / s1 * dx : 0;
         if (o < o0) o0 = o;
       }
       for (j = 0; j < m; ++j) y0[j] -= o0;
       return y0;
     },
     expand: function(data) {
       var n = data.length, m = data[0].length, k = 1 / n, i, j, o, y0 = [];
       for (j = 0; j < m; ++j) {
         for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
         if (o) for (i = 0; i < n; i++) data[i][j][1] /= o; else for (i = 0; i < n; i++) data[i][j][1] = k;
       }
       for (j = 0; j < m; ++j) y0[j] = 0;
       return y0;
     },
     zero: d3_layout_stackOffsetZero
   });
   function d3_layout_stackOrderDefault(data) {
     return d3.range(data.length);
   }
   function d3_layout_stackOffsetZero(data) {
     var j = -1, m = data[0].length, y0 = [];
     while (++j < m) y0[j] = 0;
     return y0;
   }
   function d3_layout_stackMaxIndex(array) {
     var i = 1, j = 0, v = array[0][1], k, n = array.length;
     for (;i < n; ++i) {
       if ((k = array[i][1]) > v) {
         j = i;
         v = k;
       }
     }
     return j;
   }
   function d3_layout_stackReduceSum(d) {
     return d.reduce(d3_layout_stackSum, 0);
   }
   function d3_layout_stackSum(p, d) {
     return p + d[1];
   }
   d3.layout.histogram = function() {
     var frequency = true, valuer = Number, ranger = d3_layout_histogramRange, binner = d3_layout_histogramBinSturges;
     function histogram(data, i) {
       var bins = [], values = data.map(valuer, this), range = ranger.call(this, values, i), thresholds = binner.call(this, range, values, i), bin, i = -1, n = values.length, m = thresholds.length - 1, k = frequency ? 1 : 1 / n, x;
       while (++i < m) {
         bin = bins[i] = [];
         bin.dx = thresholds[i + 1] - (bin.x = thresholds[i]);
         bin.y = 0;
       }
       if (m > 0) {
         i = -1;
         while (++i < n) {
           x = values[i];
           if (x >= range[0] && x <= range[1]) {
             bin = bins[d3.bisect(thresholds, x, 1, m) - 1];
             bin.y += k;
             bin.push(data[i]);
           }
         }
       }
       return bins;
     }
     histogram.value = function(x) {
       if (!arguments.length) return valuer;
       valuer = x;
       return histogram;
     };
     histogram.range = function(x) {
       if (!arguments.length) return ranger;
       ranger = d3_functor(x);
       return histogram;
     };
     histogram.bins = function(x) {
       if (!arguments.length) return binner;
       binner = typeof x === "number" ? function(range) {
         return d3_layout_histogramBinFixed(range, x);
       } : d3_functor(x);
       return histogram;
     };
     histogram.frequency = function(x) {
       if (!arguments.length) return frequency;
       frequency = !!x;
       return histogram;
     };
     return histogram;
   };
   function d3_layout_histogramBinSturges(range, values) {
     return d3_layout_histogramBinFixed(range, Math.ceil(Math.log(values.length) / Math.LN2 + 1));
   }
   function d3_layout_histogramBinFixed(range, n) {
     var x = -1, b = +range[0], m = (range[1] - b) / n, f = [];
     while (++x <= n) f[x] = m * x + b;
     return f;
   }
   function d3_layout_histogramRange(values) {
     return [ d3.min(values), d3.max(values) ];
   }
   d3.layout.tree = function() {
     var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ], nodeSize = false;
     function tree(d, i) {
       var nodes = hierarchy.call(this, d, i), root = nodes[0];
       function firstWalk(node, previousSibling) {
         var children = node.children, layout = node._tree;
         if (children && (n = children.length)) {
           var n, firstChild = children[0], previousChild, ancestor = firstChild, child, i = -1;
           while (++i < n) {
             child = children[i];
             firstWalk(child, previousChild);
             ancestor = apportion(child, previousChild, ancestor);
             previousChild = child;
           }
           d3_layout_treeShift(node);
           var midpoint = .5 * (firstChild._tree.prelim + child._tree.prelim);
           if (previousSibling) {
             layout.prelim = previousSibling._tree.prelim + separation(node, previousSibling);
             layout.mod = layout.prelim - midpoint;
           } else {
             layout.prelim = midpoint;
           }
         } else {
           if (previousSibling) {
             layout.prelim = previousSibling._tree.prelim + separation(node, previousSibling);
           }
         }
       }
       function secondWalk(node, x) {
         node.x = node._tree.prelim + x;
         var children = node.children;
         if (children && (n = children.length)) {
           var i = -1, n;
           x += node._tree.mod;
           while (++i < n) {
             secondWalk(children[i], x);
           }
         }
       }
       function apportion(node, previousSibling, ancestor) {
         if (previousSibling) {
           var vip = node, vop = node, vim = previousSibling, vom = node.parent.children[0], sip = vip._tree.mod, sop = vop._tree.mod, sim = vim._tree.mod, som = vom._tree.mod, shift;
           while (vim = d3_layout_treeRight(vim), vip = d3_layout_treeLeft(vip), vim && vip) {
             vom = d3_layout_treeLeft(vom);
             vop = d3_layout_treeRight(vop);
             vop._tree.ancestor = node;
             shift = vim._tree.prelim + sim - vip._tree.prelim - sip + separation(vim, vip);
             if (shift > 0) {
               d3_layout_treeMove(d3_layout_treeAncestor(vim, node, ancestor), node, shift);
               sip += shift;
               sop += shift;
             }
             sim += vim._tree.mod;
             sip += vip._tree.mod;
             som += vom._tree.mod;
             sop += vop._tree.mod;
           }
           if (vim && !d3_layout_treeRight(vop)) {
             vop._tree.thread = vim;
             vop._tree.mod += sim - sop;
           }
           if (vip && !d3_layout_treeLeft(vom)) {
             vom._tree.thread = vip;
             vom._tree.mod += sip - som;
             ancestor = node;
           }
         }
         return ancestor;
       }
       d3_layout_treeVisitAfter(root, function(node, previousSibling) {
         node._tree = {
           ancestor: node,
           prelim: 0,
           mod: 0,
           change: 0,
           shift: 0,
           number: previousSibling ? previousSibling._tree.number + 1 : 0
         };
       });
       firstWalk(root);
       secondWalk(root, -root._tree.prelim);
       var left = d3_layout_treeSearch(root, d3_layout_treeLeftmost), right = d3_layout_treeSearch(root, d3_layout_treeRightmost), deep = d3_layout_treeSearch(root, d3_layout_treeDeepest), x0 = left.x - separation(left, right) / 2, x1 = right.x + separation(right, left) / 2, y1 = deep.depth || 1;
       d3_layout_treeVisitAfter(root, nodeSize ? function(node) {
         node.x *= size[0];
         node.y = node.depth * size[1];
         delete node._tree;
       } : function(node) {
         node.x = (node.x - x0) / (x1 - x0) * size[0];
         node.y = node.depth / y1 * size[1];
         delete node._tree;
       });
       return nodes;
     }
     tree.separation = function(x) {
       if (!arguments.length) return separation;
       separation = x;
       return tree;
     };
     tree.size = function(x) {
       if (!arguments.length) return nodeSize ? null : size;
       nodeSize = (size = x) == null;
       return tree;
     };
     tree.nodeSize = function(x) {
       if (!arguments.length) return nodeSize ? size : null;
       nodeSize = (size = x) != null;
       return tree;
     };
     return d3_layout_hierarchyRebind(tree, hierarchy);
   };
   function d3_layout_treeSeparation(a, b) {
     return a.parent == b.parent ? 1 : 2;
   }
   function d3_layout_treeLeft(node) {
     var children = node.children;
     return children && children.length ? children[0] : node._tree.thread;
   }
   function d3_layout_treeRight(node) {
     var children = node.children, n;
     return children && (n = children.length) ? children[n - 1] : node._tree.thread;
   }
   function d3_layout_treeSearch(node, compare) {
     var children = node.children;
     if (children && (n = children.length)) {
       var child, n, i = -1;
       while (++i < n) {
         if (compare(child = d3_layout_treeSearch(children[i], compare), node) > 0) {
           node = child;
         }
       }
     }
     return node;
   }
   function d3_layout_treeRightmost(a, b) {
     return a.x - b.x;
   }
   function d3_layout_treeLeftmost(a, b) {
     return b.x - a.x;
   }
   function d3_layout_treeDeepest(a, b) {
     return a.depth - b.depth;
   }
   function d3_layout_treeVisitAfter(node, callback) {
     function visit(node, previousSibling) {
       var children = node.children;
       if (children && (n = children.length)) {
         var child, previousChild = null, i = -1, n;
         while (++i < n) {
           child = children[i];
           visit(child, previousChild);
           previousChild = child;
         }
       }
       callback(node, previousSibling);
     }
     visit(node, null);
   }
   function d3_layout_treeShift(node) {
     var shift = 0, change = 0, children = node.children, i = children.length, child;
     while (--i >= 0) {
       child = children[i]._tree;
       child.prelim += shift;
       child.mod += shift;
       shift += child.shift + (change += child.change);
     }
   }
   function d3_layout_treeMove(ancestor, node, shift) {
     ancestor = ancestor._tree;
     node = node._tree;
     var change = shift / (node.number - ancestor.number);
     ancestor.change += change;
     node.change -= change;
     node.shift += shift;
     node.prelim += shift;
     node.mod += shift;
   }
   function d3_layout_treeAncestor(vim, node, ancestor) {
     return vim._tree.ancestor.parent == node.parent ? vim._tree.ancestor : ancestor;
   }
   d3.layout.pack = function() {
     var hierarchy = d3.layout.hierarchy().sort(d3_layout_packSort), padding = 0, size = [ 1, 1 ], radius;
     function pack(d, i) {
       var nodes = hierarchy.call(this, d, i), root = nodes[0], w = size[0], h = size[1], r = radius == null ? Math.sqrt : typeof radius === "function" ? radius : function() {
         return radius;
       };
       root.x = root.y = 0;
       d3_layout_treeVisitAfter(root, function(d) {
         d.r = +r(d.value);
       });
       d3_layout_treeVisitAfter(root, d3_layout_packSiblings);
       if (padding) {
         var dr = padding * (radius ? 1 : Math.max(2 * root.r / w, 2 * root.r / h)) / 2;
         d3_layout_treeVisitAfter(root, function(d) {
           d.r += dr;
         });
         d3_layout_treeVisitAfter(root, d3_layout_packSiblings);
         d3_layout_treeVisitAfter(root, function(d) {
           d.r -= dr;
         });
       }
       d3_layout_packTransform(root, w / 2, h / 2, radius ? 1 : 1 / Math.max(2 * root.r / w, 2 * root.r / h));
       return nodes;
     }
     pack.size = function(_) {
       if (!arguments.length) return size;
       size = _;
       return pack;
     };
     pack.radius = function(_) {
       if (!arguments.length) return radius;
       radius = _ == null || typeof _ === "function" ? _ : +_;
       return pack;
     };
     pack.padding = function(_) {
       if (!arguments.length) return padding;
       padding = +_;
       return pack;
     };
     return d3_layout_hierarchyRebind(pack, hierarchy);
   };
   function d3_layout_packSort(a, b) {
     return a.value - b.value;
   }
   function d3_layout_packInsert(a, b) {
     var c = a._pack_next;
     a._pack_next = b;
     b._pack_prev = a;
     b._pack_next = c;
     c._pack_prev = b;
   }
   function d3_layout_packSplice(a, b) {
     a._pack_next = b;
     b._pack_prev = a;
   }
   function d3_layout_packIntersects(a, b) {
     var dx = b.x - a.x, dy = b.y - a.y, dr = a.r + b.r;
     return .999 * dr * dr > dx * dx + dy * dy;
   }
   function d3_layout_packSiblings(node) {
     if (!(nodes = node.children) || !(n = nodes.length)) return;
     var nodes, xMin = Infinity, xMax = -Infinity, yMin = Infinity, yMax = -Infinity, a, b, c, i, j, k, n;
     function bound(node) {
       xMin = Math.min(node.x - node.r, xMin);
       xMax = Math.max(node.x + node.r, xMax);
       yMin = Math.min(node.y - node.r, yMin);
       yMax = Math.max(node.y + node.r, yMax);
     }
     nodes.forEach(d3_layout_packLink);
     a = nodes[0];
     a.x = -a.r;
     a.y = 0;
     bound(a);
     if (n > 1) {
       b = nodes[1];
       b.x = b.r;
       b.y = 0;
       bound(b);
       if (n > 2) {
         c = nodes[2];
         d3_layout_packPlace(a, b, c);
         bound(c);
         d3_layout_packInsert(a, c);
         a._pack_prev = c;
         d3_layout_packInsert(c, b);
         b = a._pack_next;
         for (i = 3; i < n; i++) {
           d3_layout_packPlace(a, b, c = nodes[i]);
           var isect = 0, s1 = 1, s2 = 1;
           for (j = b._pack_next; j !== b; j = j._pack_next, s1++) {
             if (d3_layout_packIntersects(j, c)) {
               isect = 1;
               break;
             }
           }
           if (isect == 1) {
             for (k = a._pack_prev; k !== j._pack_prev; k = k._pack_prev, s2++) {
               if (d3_layout_packIntersects(k, c)) {
                 break;
               }
             }
           }
           if (isect) {
             if (s1 < s2 || s1 == s2 && b.r < a.r) d3_layout_packSplice(a, b = j); else d3_layout_packSplice(a = k, b);
             i--;
           } else {
             d3_layout_packInsert(a, c);
             b = c;
             bound(c);
           }
         }
       }
     }
     var cx = (xMin + xMax) / 2, cy = (yMin + yMax) / 2, cr = 0;
     for (i = 0; i < n; i++) {
       c = nodes[i];
       c.x -= cx;
       c.y -= cy;
       cr = Math.max(cr, c.r + Math.sqrt(c.x * c.x + c.y * c.y));
     }
     node.r = cr;
     nodes.forEach(d3_layout_packUnlink);
   }
   function d3_layout_packLink(node) {
     node._pack_next = node._pack_prev = node;
   }
   function d3_layout_packUnlink(node) {
     delete node._pack_next;
     delete node._pack_prev;
   }
   function d3_layout_packTransform(node, x, y, k) {
     var children = node.children;
     node.x = x += k * node.x;
     node.y = y += k * node.y;
     node.r *= k;
     if (children) {
       var i = -1, n = children.length;
       while (++i < n) d3_layout_packTransform(children[i], x, y, k);
     }
   }
   function d3_layout_packPlace(a, b, c) {
     var db = a.r + c.r, dx = b.x - a.x, dy = b.y - a.y;
     if (db && (dx || dy)) {
       var da = b.r + c.r, dc = dx * dx + dy * dy;
       da *= da;
       db *= db;
       var x = .5 + (db - da) / (2 * dc), y = Math.sqrt(Math.max(0, 2 * da * (db + dc) - (db -= dc) * db - da * da)) / (2 * dc);
       c.x = a.x + x * dx + y * dy;
       c.y = a.y + x * dy - y * dx;
     } else {
       c.x = a.x + db;
       c.y = a.y;
     }
   }
   d3.layout.cluster = function() {
     var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ], nodeSize = false;
     function cluster(d, i) {
       var nodes = hierarchy.call(this, d, i), root = nodes[0], previousNode, x = 0;
       d3_layout_treeVisitAfter(root, function(node) {
         var children = node.children;
         if (children && children.length) {
           node.x = d3_layout_clusterX(children);
           node.y = d3_layout_clusterY(children);
         } else {
           node.x = previousNode ? x += separation(node, previousNode) : 0;
           node.y = 0;
           previousNode = node;
         }
       });
       var left = d3_layout_clusterLeft(root), right = d3_layout_clusterRight(root), x0 = left.x - separation(left, right) / 2, x1 = right.x + separation(right, left) / 2;
       d3_layout_treeVisitAfter(root, nodeSize ? function(node) {
         node.x = (node.x - root.x) * size[0];
         node.y = (root.y - node.y) * size[1];
       } : function(node) {
         node.x = (node.x - x0) / (x1 - x0) * size[0];
         node.y = (1 - (root.y ? node.y / root.y : 1)) * size[1];
       });
       return nodes;
     }
     cluster.separation = function(x) {
       if (!arguments.length) return separation;
       separation = x;
       return cluster;
     };
     cluster.size = function(x) {
       if (!arguments.length) return nodeSize ? null : size;
       nodeSize = (size = x) == null;
       return cluster;
     };
     cluster.nodeSize = function(x) {
       if (!arguments.length) return nodeSize ? size : null;
       nodeSize = (size = x) != null;
       return cluster;
     };
     return d3_layout_hierarchyRebind(cluster, hierarchy);
   };
   function d3_layout_clusterY(children) {
     return 1 + d3.max(children, function(child) {
       return child.y;
     });
   }
   function d3_layout_clusterX(children) {
     return children.reduce(function(x, child) {
       return x + child.x;
     }, 0) / children.length;
   }
   function d3_layout_clusterLeft(node) {
     var children = node.children;
     return children && children.length ? d3_layout_clusterLeft(children[0]) : node;
   }
   function d3_layout_clusterRight(node) {
     var children = node.children, n;
     return children && (n = children.length) ? d3_layout_clusterRight(children[n - 1]) : node;
   }
   d3.layout.treemap = function() {
     var hierarchy = d3.layout.hierarchy(), round = Math.round, size = [ 1, 1 ], padding = null, pad = d3_layout_treemapPadNull, sticky = false, stickies, mode = "squarify", ratio = .5 * (1 + Math.sqrt(5));
     function scale(children, k) {
       var i = -1, n = children.length, child, area;
       while (++i < n) {
         area = (child = children[i]).value * (k < 0 ? 0 : k);
         child.area = isNaN(area) || area <= 0 ? 0 : area;
       }
     }
     function squarify(node) {
       var children = node.children;
       if (children && children.length) {
         var rect = pad(node), row = [], remaining = children.slice(), child, best = Infinity, score, u = mode === "slice" ? rect.dx : mode === "dice" ? rect.dy : mode === "slice-dice" ? node.depth & 1 ? rect.dy : rect.dx : Math.min(rect.dx, rect.dy), n;
         scale(remaining, rect.dx * rect.dy / node.value);
         row.area = 0;
         while ((n = remaining.length) > 0) {
           row.push(child = remaining[n - 1]);
           row.area += child.area;
           if (mode !== "squarify" || (score = worst(row, u)) <= best) {
             remaining.pop();
             best = score;
           } else {
             row.area -= row.pop().area;
             position(row, u, rect, false);
             u = Math.min(rect.dx, rect.dy);
             row.length = row.area = 0;
             best = Infinity;
           }
         }
         if (row.length) {
           position(row, u, rect, true);
           row.length = row.area = 0;
         }
         children.forEach(squarify);
       }
     }
     function stickify(node) {
       var children = node.children;
       if (children && children.length) {
         var rect = pad(node), remaining = children.slice(), child, row = [];
         scale(remaining, rect.dx * rect.dy / node.value);
         row.area = 0;
         while (child = remaining.pop()) {
           row.push(child);
           row.area += child.area;
           if (child.z != null) {
             position(row, child.z ? rect.dx : rect.dy, rect, !remaining.length);
             row.length = row.area = 0;
           }
         }
         children.forEach(stickify);
       }
     }
     function worst(row, u) {
       var s = row.area, r, rmax = 0, rmin = Infinity, i = -1, n = row.length;
       while (++i < n) {
         if (!(r = row[i].area)) continue;
         if (r < rmin) rmin = r;
         if (r > rmax) rmax = r;
       }
       s *= s;
       u *= u;
       return s ? Math.max(u * rmax * ratio / s, s / (u * rmin * ratio)) : Infinity;
     }
     function position(row, u, rect, flush) {
       var i = -1, n = row.length, x = rect.x, y = rect.y, v = u ? round(row.area / u) : 0, o;
       if (u == rect.dx) {
         if (flush || v > rect.dy) v = rect.dy;
         while (++i < n) {
           o = row[i];
           o.x = x;
           o.y = y;
           o.dy = v;
           x += o.dx = Math.min(rect.x + rect.dx - x, v ? round(o.area / v) : 0);
         }
         o.z = true;
         o.dx += rect.x + rect.dx - x;
         rect.y += v;
         rect.dy -= v;
       } else {
         if (flush || v > rect.dx) v = rect.dx;
         while (++i < n) {
           o = row[i];
           o.x = x;
           o.y = y;
           o.dx = v;
           y += o.dy = Math.min(rect.y + rect.dy - y, v ? round(o.area / v) : 0);
         }
         o.z = false;
         o.dy += rect.y + rect.dy - y;
         rect.x += v;
         rect.dx -= v;
       }
     }
     function treemap(d) {
       var nodes = stickies || hierarchy(d), root = nodes[0];
       root.x = 0;
       root.y = 0;
       root.dx = size[0];
       root.dy = size[1];
       if (stickies) hierarchy.revalue(root);
       scale([ root ], root.dx * root.dy / root.value);
       (stickies ? stickify : squarify)(root);
       if (sticky) stickies = nodes;
       return nodes;
     }
     treemap.size = function(x) {
       if (!arguments.length) return size;
       size = x;
       return treemap;
     };
     treemap.padding = function(x) {
       if (!arguments.length) return padding;
       function padFunction(node) {
         var p = x.call(treemap, node, node.depth);
         return p == null ? d3_layout_treemapPadNull(node) : d3_layout_treemapPad(node, typeof p === "number" ? [ p, p, p, p ] : p);
       }
       function padConstant(node) {
         return d3_layout_treemapPad(node, x);
       }
       var type;
       pad = (padding = x) == null ? d3_layout_treemapPadNull : (type = typeof x) === "function" ? padFunction : type === "number" ? (x = [ x, x, x, x ],
       padConstant) : padConstant;
       return treemap;
     };
     treemap.round = function(x) {
       if (!arguments.length) return round != Number;
       round = x ? Math.round : Number;
       return treemap;
     };
     treemap.sticky = function(x) {
       if (!arguments.length) return sticky;
       sticky = x;
       stickies = null;
       return treemap;
     };
     treemap.ratio = function(x) {
       if (!arguments.length) return ratio;
       ratio = x;
       return treemap;
     };
     treemap.mode = function(x) {
       if (!arguments.length) return mode;
       mode = x + "";
       return treemap;
     };
     return d3_layout_hierarchyRebind(treemap, hierarchy);
   };
   function d3_layout_treemapPadNull(node) {
     return {
       x: node.x,
       y: node.y,
       dx: node.dx,
       dy: node.dy
     };
   }
   function d3_layout_treemapPad(node, padding) {
     var x = node.x + padding[3], y = node.y + padding[0], dx = node.dx - padding[1] - padding[3], dy = node.dy - padding[0] - padding[2];
     if (dx < 0) {
       x += dx / 2;
       dx = 0;
     }
     if (dy < 0) {
       y += dy / 2;
       dy = 0;
     }
     return {
       x: x,
       y: y,
       dx: dx,
       dy: dy
     };
   }
   d3.random = {
     normal: function(µ, σ) {
       var n = arguments.length;
       if (n < 2) σ = 1;
       if (n < 1) µ = 0;
       return function() {
         var x, y, r;
         do {
           x = Math.random() * 2 - 1;
           y = Math.random() * 2 - 1;
           r = x * x + y * y;
         } while (!r || r > 1);
         return µ + σ * x * Math.sqrt(-2 * Math.log(r) / r);
       };
     },
     logNormal: function() {
       var random = d3.random.normal.apply(d3, arguments);
       return function() {
         return Math.exp(random());
       };
     },
     bates: function(m) {
       var random = d3.random.irwinHall(m);
       return function() {
         return random() / m;
       };
     },
     irwinHall: function(m) {
       return function() {
         for (var s = 0, j = 0; j < m; j++) s += Math.random();
         return s;
       };
     }
   };
   d3.scale = {};
   function d3_scaleExtent(domain) {
     var start = domain[0], stop = domain[domain.length - 1];
     return start < stop ? [ start, stop ] : [ stop, start ];
   }
   function d3_scaleRange(scale) {
     return scale.rangeExtent ? scale.rangeExtent() : d3_scaleExtent(scale.range());
   }
   function d3_scale_bilinear(domain, range, uninterpolate, interpolate) {
     var u = uninterpolate(domain[0], domain[1]), i = interpolate(range[0], range[1]);
     return function(x) {
       return i(u(x));
     };
   }
   function d3_scale_nice(domain, nice) {
     var i0 = 0, i1 = domain.length - 1, x0 = domain[i0], x1 = domain[i1], dx;
     if (x1 < x0) {
       dx = i0, i0 = i1, i1 = dx;
       dx = x0, x0 = x1, x1 = dx;
     }
     domain[i0] = nice.floor(x0);
     domain[i1] = nice.ceil(x1);
     return domain;
   }
   function d3_scale_niceStep(step) {
     return step ? {
       floor: function(x) {
         return Math.floor(x / step) * step;
       },
       ceil: function(x) {
         return Math.ceil(x / step) * step;
       }
     } : d3_scale_niceIdentity;
   }
   var d3_scale_niceIdentity = {
     floor: d3_identity,
     ceil: d3_identity
   };
   function d3_scale_polylinear(domain, range, uninterpolate, interpolate) {
     var u = [], i = [], j = 0, k = Math.min(domain.length, range.length) - 1;
     if (domain[k] < domain[0]) {
       domain = domain.slice().reverse();
       range = range.slice().reverse();
     }
     while (++j <= k) {
       u.push(uninterpolate(domain[j - 1], domain[j]));
       i.push(interpolate(range[j - 1], range[j]));
     }
     return function(x) {
       var j = d3.bisect(domain, x, 1, k) - 1;
       return i[j](u[j](x));
     };
   }
   d3.scale.linear = function() {
     return d3_scale_linear([ 0, 1 ], [ 0, 1 ], d3_interpolate, false);
   };
   function d3_scale_linear(domain, range, interpolate, clamp) {
     var output, input;
     function rescale() {
       var linear = Math.min(domain.length, range.length) > 2 ? d3_scale_polylinear : d3_scale_bilinear, uninterpolate = clamp ? d3_uninterpolateClamp : d3_uninterpolateNumber;
       output = linear(domain, range, uninterpolate, interpolate);
       input = linear(range, domain, uninterpolate, d3_interpolate);
       return scale;
     }
     function scale(x) {
       return output(x);
     }
     scale.invert = function(y) {
       return input(y);
     };
     scale.domain = function(x) {
       if (!arguments.length) return domain;
       domain = x.map(Number);
       return rescale();
     };
     scale.range = function(x) {
       if (!arguments.length) return range;
       range = x;
       return rescale();
     };
     scale.rangeRound = function(x) {
       return scale.range(x).interpolate(d3_interpolateRound);
     };
     scale.clamp = function(x) {
       if (!arguments.length) return clamp;
       clamp = x;
       return rescale();
     };
     scale.interpolate = function(x) {
       if (!arguments.length) return interpolate;
       interpolate = x;
       return rescale();
     };
     scale.ticks = function(m) {
       return d3_scale_linearTicks(domain, m);
     };
     scale.tickFormat = function(m, format) {
       return d3_scale_linearTickFormat(domain, m, format);
     };
     scale.nice = function(m) {
       d3_scale_linearNice(domain, m);
       return rescale();
     };
     scale.copy = function() {
       return d3_scale_linear(domain, range, interpolate, clamp);
     };
     return rescale();
   }
   function d3_scale_linearRebind(scale, linear) {
     return d3.rebind(scale, linear, "range", "rangeRound", "interpolate", "clamp");
   }
   function d3_scale_linearNice(domain, m) {
     return d3_scale_nice(domain, d3_scale_niceStep(d3_scale_linearTickRange(domain, m)[2]));
   }
   function d3_scale_linearTickRange(domain, m) {
     if (m == null) m = 10;
     var extent = d3_scaleExtent(domain), span = extent[1] - extent[0], step = Math.pow(10, Math.floor(Math.log(span / m) / Math.LN10)), err = m / span * step;
     if (err <= .15) step *= 10; else if (err <= .35) step *= 5; else if (err <= .75) step *= 2;
     extent[0] = Math.ceil(extent[0] / step) * step;
     extent[1] = Math.floor(extent[1] / step) * step + step * .5;
     extent[2] = step;
     return extent;
   }
   function d3_scale_linearTicks(domain, m) {
     return d3.range.apply(d3, d3_scale_linearTickRange(domain, m));
   }
   function d3_scale_linearTickFormat(domain, m, format) {
     var range = d3_scale_linearTickRange(domain, m);
     return d3.format(format ? format.replace(d3_format_re, function(a, b, c, d, e, f, g, h, i, j) {
       return [ b, c, d, e, f, g, h, i || "." + d3_scale_linearFormatPrecision(j, range), j ].join("");
     }) : ",." + d3_scale_linearPrecision(range[2]) + "f");
   }
   var d3_scale_linearFormatSignificant = {
     s: 1,
     g: 1,
     p: 1,
     r: 1,
     e: 1
   };
   function d3_scale_linearPrecision(value) {
     return -Math.floor(Math.log(value) / Math.LN10 + .01);
   }
   function d3_scale_linearFormatPrecision(type, range) {
     var p = d3_scale_linearPrecision(range[2]);
     return type in d3_scale_linearFormatSignificant ? Math.abs(p - d3_scale_linearPrecision(Math.max(Math.abs(range[0]), Math.abs(range[1])))) + +(type !== "e") : p - (type === "%") * 2;
   }
   d3.scale.log = function() {
     return d3_scale_log(d3.scale.linear().domain([ 0, 1 ]), 10, true, [ 1, 10 ]);
   };
   function d3_scale_log(linear, base, positive, domain) {
     function log(x) {
       return (positive ? Math.log(x < 0 ? 0 : x) : -Math.log(x > 0 ? 0 : -x)) / Math.log(base);
     }
     function pow(x) {
       return positive ? Math.pow(base, x) : -Math.pow(base, -x);
     }
     function scale(x) {
       return linear(log(x));
     }
     scale.invert = function(x) {
       return pow(linear.invert(x));
     };
     scale.domain = function(x) {
       if (!arguments.length) return domain;
       positive = x[0] >= 0;
       linear.domain((domain = x.map(Number)).map(log));
       return scale;
     };
     scale.base = function(_) {
       if (!arguments.length) return base;
       base = +_;
       linear.domain(domain.map(log));
       return scale;
     };
     scale.nice = function() {
       var niced = d3_scale_nice(domain.map(log), positive ? Math : d3_scale_logNiceNegative);
       linear.domain(niced);
       domain = niced.map(pow);
       return scale;
     };
     scale.ticks = function() {
       var extent = d3_scaleExtent(domain), ticks = [], u = extent[0], v = extent[1], i = Math.floor(log(u)), j = Math.ceil(log(v)), n = base % 1 ? 2 : base;
       if (isFinite(j - i)) {
         if (positive) {
           for (;i < j; i++) for (var k = 1; k < n; k++) ticks.push(pow(i) * k);
           ticks.push(pow(i));
         } else {
           ticks.push(pow(i));
           for (;i++ < j; ) for (var k = n - 1; k > 0; k--) ticks.push(pow(i) * k);
         }
         for (i = 0; ticks[i] < u; i++) {}
         for (j = ticks.length; ticks[j - 1] > v; j--) {}
         ticks = ticks.slice(i, j);
       }
       return ticks;
     };
     scale.tickFormat = function(n, format) {
       if (!arguments.length) return d3_scale_logFormat;
       if (arguments.length < 2) format = d3_scale_logFormat; else if (typeof format !== "function") format = d3.format(format);
       var k = Math.max(.1, n / scale.ticks().length), f = positive ? (e = 1e-12, Math.ceil) : (e = -1e-12,
       Math.floor), e;
       return function(d) {
         return d / pow(f(log(d) + e)) <= k ? format(d) : "";
       };
     };
     scale.copy = function() {
       return d3_scale_log(linear.copy(), base, positive, domain);
     };
     return d3_scale_linearRebind(scale, linear);
   }
   var d3_scale_logFormat = d3.format(".0e"), d3_scale_logNiceNegative = {
     floor: function(x) {
       return -Math.ceil(-x);
     },
     ceil: function(x) {
       return -Math.floor(-x);
     }
   };
   d3.scale.pow = function() {
     return d3_scale_pow(d3.scale.linear(), 1, [ 0, 1 ]);
   };
   function d3_scale_pow(linear, exponent, domain) {
     var powp = d3_scale_powPow(exponent), powb = d3_scale_powPow(1 / exponent);
     function scale(x) {
       return linear(powp(x));
     }
     scale.invert = function(x) {
       return powb(linear.invert(x));
     };
     scale.domain = function(x) {
       if (!arguments.length) return domain;
       linear.domain((domain = x.map(Number)).map(powp));
       return scale;
     };
     scale.ticks = function(m) {
       return d3_scale_linearTicks(domain, m);
     };
     scale.tickFormat = function(m, format) {
       return d3_scale_linearTickFormat(domain, m, format);
     };
     scale.nice = function(m) {
       return scale.domain(d3_scale_linearNice(domain, m));
     };
     scale.exponent = function(x) {
       if (!arguments.length) return exponent;
       powp = d3_scale_powPow(exponent = x);
       powb = d3_scale_powPow(1 / exponent);
       linear.domain(domain.map(powp));
       return scale;
     };
     scale.copy = function() {
       return d3_scale_pow(linear.copy(), exponent, domain);
     };
     return d3_scale_linearRebind(scale, linear);
   }
   function d3_scale_powPow(e) {
     return function(x) {
       return x < 0 ? -Math.pow(-x, e) : Math.pow(x, e);
     };
   }
   d3.scale.sqrt = function() {
     return d3.scale.pow().exponent(.5);
   };
   d3.scale.ordinal = function() {
     return d3_scale_ordinal([], {
       t: "range",
       a: [ [] ]
     });
   };
   function d3_scale_ordinal(domain, ranger) {
     var index, range, rangeBand;
     function scale(x) {
       return range[((index.get(x) || ranger.t === "range" && index.set(x, domain.push(x))) - 1) % range.length];
     }
     function steps(start, step) {
       return d3.range(domain.length).map(function(i) {
         return start + step * i;
       });
     }
     scale.domain = function(x) {
       if (!arguments.length) return domain;
       domain = [];
       index = new d3_Map();
       var i = -1, n = x.length, xi;
       while (++i < n) if (!index.has(xi = x[i])) index.set(xi, domain.push(xi));
       return scale[ranger.t].apply(scale, ranger.a);
     };
     scale.range = function(x) {
       if (!arguments.length) return range;
       range = x;
       rangeBand = 0;
       ranger = {
         t: "range",
         a: arguments
       };
       return scale;
     };
     scale.rangePoints = function(x, padding) {
       if (arguments.length < 2) padding = 0;
       var start = x[0], stop = x[1], step = (stop - start) / (Math.max(1, domain.length - 1) + padding);
       range = steps(domain.length < 2 ? (start + stop) / 2 : start + step * padding / 2, step);
       rangeBand = 0;
       ranger = {
         t: "rangePoints",
         a: arguments
       };
       return scale;
     };
     scale.rangeBands = function(x, padding, outerPadding) {
       if (arguments.length < 2) padding = 0;
       if (arguments.length < 3) outerPadding = padding;
       var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = (stop - start) / (domain.length - padding + 2 * outerPadding);
       range = steps(start + step * outerPadding, step);
       if (reverse) range.reverse();
       rangeBand = step * (1 - padding);
       ranger = {
         t: "rangeBands",
         a: arguments
       };
       return scale;
     };
     scale.rangeRoundBands = function(x, padding, outerPadding) {
       if (arguments.length < 2) padding = 0;
       if (arguments.length < 3) outerPadding = padding;
       var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = Math.floor((stop - start) / (domain.length - padding + 2 * outerPadding)), error = stop - start - (domain.length - padding) * step;
       range = steps(start + Math.round(error / 2), step);
       if (reverse) range.reverse();
       rangeBand = Math.round(step * (1 - padding));
       ranger = {
         t: "rangeRoundBands",
         a: arguments
       };
       return scale;
     };
     scale.rangeBand = function() {
       return rangeBand;
     };
     scale.rangeExtent = function() {
       return d3_scaleExtent(ranger.a[0]);
     };
     scale.copy = function() {
       return d3_scale_ordinal(domain, ranger);
     };
     return scale.domain(domain);
   }
   d3.scale.category10 = function() {
     return d3.scale.ordinal().range(d3_category10);
   };
   d3.scale.category20 = function() {
     return d3.scale.ordinal().range(d3_category20);
   };
   d3.scale.category20b = function() {
     return d3.scale.ordinal().range(d3_category20b);
   };
   d3.scale.category20c = function() {
     return d3.scale.ordinal().range(d3_category20c);
   };
   var d3_category10 = [ 2062260, 16744206, 2924588, 14034728, 9725885, 9197131, 14907330, 8355711, 12369186, 1556175 ].map(d3_rgbString);
   var d3_category20 = [ 2062260, 11454440, 16744206, 16759672, 2924588, 10018698, 14034728, 16750742, 9725885, 12955861, 9197131, 12885140, 14907330, 16234194, 8355711, 13092807, 12369186, 14408589, 1556175, 10410725 ].map(d3_rgbString);
   var d3_category20b = [ 3750777, 5395619, 7040719, 10264286, 6519097, 9216594, 11915115, 13556636, 9202993, 12426809, 15186514, 15190932, 8666169, 11356490, 14049643, 15177372, 8077683, 10834324, 13528509, 14589654 ].map(d3_rgbString);
   var d3_category20c = [ 3244733, 7057110, 10406625, 13032431, 15095053, 16616764, 16625259, 16634018, 3253076, 7652470, 10607003, 13101504, 7695281, 10394312, 12369372, 14342891, 6513507, 9868950, 12434877, 14277081 ].map(d3_rgbString);
   d3.scale.quantile = function() {
     return d3_scale_quantile([], []);
   };
   function d3_scale_quantile(domain, range) {
     var thresholds;
     function rescale() {
       var k = 0, q = range.length;
       thresholds = [];
       while (++k < q) thresholds[k - 1] = d3.quantile(domain, k / q);
       return scale;
     }
     function scale(x) {
       if (!isNaN(x = +x)) return range[d3.bisect(thresholds, x)];
     }
     scale.domain = function(x) {
       if (!arguments.length) return domain;
       domain = x.filter(function(d) {
         return !isNaN(d);
       }).sort(d3.ascending);
       return rescale();
     };
     scale.range = function(x) {
       if (!arguments.length) return range;
       range = x;
       return rescale();
     };
     scale.quantiles = function() {
       return thresholds;
     };
     scale.invertExtent = function(y) {
       y = range.indexOf(y);
       return y < 0 ? [ NaN, NaN ] : [ y > 0 ? thresholds[y - 1] : domain[0], y < thresholds.length ? thresholds[y] : domain[domain.length - 1] ];
     };
     scale.copy = function() {
       return d3_scale_quantile(domain, range);
     };
     return rescale();
   }
   d3.scale.quantize = function() {
     return d3_scale_quantize(0, 1, [ 0, 1 ]);
   };
   function d3_scale_quantize(x0, x1, range) {
     var kx, i;
     function scale(x) {
       return range[Math.max(0, Math.min(i, Math.floor(kx * (x - x0))))];
     }
     function rescale() {
       kx = range.length / (x1 - x0);
       i = range.length - 1;
       return scale;
     }
     scale.domain = function(x) {
       if (!arguments.length) return [ x0, x1 ];
       x0 = +x[0];
       x1 = +x[x.length - 1];
       return rescale();
     };
     scale.range = function(x) {
       if (!arguments.length) return range;
       range = x;
       return rescale();
     };
     scale.invertExtent = function(y) {
       y = range.indexOf(y);
       y = y < 0 ? NaN : y / kx + x0;
       return [ y, y + 1 / kx ];
     };
     scale.copy = function() {
       return d3_scale_quantize(x0, x1, range);
     };
     return rescale();
   }
   d3.scale.threshold = function() {
     return d3_scale_threshold([ .5 ], [ 0, 1 ]);
   };
   function d3_scale_threshold(domain, range) {
     function scale(x) {
       if (x <= x) return range[d3.bisect(domain, x)];
     }
     scale.domain = function(_) {
       if (!arguments.length) return domain;
       domain = _;
       return scale;
     };
     scale.range = function(_) {
       if (!arguments.length) return range;
       range = _;
       return scale;
     };
     scale.invertExtent = function(y) {
       y = range.indexOf(y);
       return [ domain[y - 1], domain[y] ];
     };
     scale.copy = function() {
       return d3_scale_threshold(domain, range);
     };
     return scale;
   }
   d3.scale.identity = function() {
     return d3_scale_identity([ 0, 1 ]);
   };
   function d3_scale_identity(domain) {
     function identity(x) {
       return +x;
     }
     identity.invert = identity;
     identity.domain = identity.range = function(x) {
       if (!arguments.length) return domain;
       domain = x.map(identity);
       return identity;
     };
     identity.ticks = function(m) {
       return d3_scale_linearTicks(domain, m);
     };
     identity.tickFormat = function(m, format) {
       return d3_scale_linearTickFormat(domain, m, format);
     };
     identity.copy = function() {
       return d3_scale_identity(domain);
     };
     return identity;
   }
   d3.svg = {};
   d3.svg.arc = function() {
     var innerRadius = d3_svg_arcInnerRadius, outerRadius = d3_svg_arcOuterRadius, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle;
     function arc() {
       var r0 = innerRadius.apply(this, arguments), r1 = outerRadius.apply(this, arguments), a0 = startAngle.apply(this, arguments) + d3_svg_arcOffset, a1 = endAngle.apply(this, arguments) + d3_svg_arcOffset, da = (a1 < a0 && (da = a0,
       a0 = a1, a1 = da), a1 - a0), df = da < π ? "0" : "1", c0 = Math.cos(a0), s0 = Math.sin(a0), c1 = Math.cos(a1), s1 = Math.sin(a1);
       return da >= d3_svg_arcMax ? r0 ? "M0," + r1 + "A" + r1 + "," + r1 + " 0 1,1 0," + -r1 + "A" + r1 + "," + r1 + " 0 1,1 0," + r1 + "M0," + r0 + "A" + r0 + "," + r0 + " 0 1,0 0," + -r0 + "A" + r0 + "," + r0 + " 0 1,0 0," + r0 + "Z" : "M0," + r1 + "A" + r1 + "," + r1 + " 0 1,1 0," + -r1 + "A" + r1 + "," + r1 + " 0 1,1 0," + r1 + "Z" : r0 ? "M" + r1 * c0 + "," + r1 * s0 + "A" + r1 + "," + r1 + " 0 " + df + ",1 " + r1 * c1 + "," + r1 * s1 + "L" + r0 * c1 + "," + r0 * s1 + "A" + r0 + "," + r0 + " 0 " + df + ",0 " + r0 * c0 + "," + r0 * s0 + "Z" : "M" + r1 * c0 + "," + r1 * s0 + "A" + r1 + "," + r1 + " 0 " + df + ",1 " + r1 * c1 + "," + r1 * s1 + "L0,0" + "Z";
     }
     arc.innerRadius = function(v) {
       if (!arguments.length) return innerRadius;
       innerRadius = d3_functor(v);
       return arc;
     };
     arc.outerRadius = function(v) {
       if (!arguments.length) return outerRadius;
       outerRadius = d3_functor(v);
       return arc;
     };
     arc.startAngle = function(v) {
       if (!arguments.length) return startAngle;
       startAngle = d3_functor(v);
       return arc;
     };
     arc.endAngle = function(v) {
       if (!arguments.length) return endAngle;
       endAngle = d3_functor(v);
       return arc;
     };
     arc.centroid = function() {
       var r = (innerRadius.apply(this, arguments) + outerRadius.apply(this, arguments)) / 2, a = (startAngle.apply(this, arguments) + endAngle.apply(this, arguments)) / 2 + d3_svg_arcOffset;
       return [ Math.cos(a) * r, Math.sin(a) * r ];
     };
     return arc;
   };
   var d3_svg_arcOffset = -halfπ, d3_svg_arcMax = τ - ε;
   function d3_svg_arcInnerRadius(d) {
     return d.innerRadius;
   }
   function d3_svg_arcOuterRadius(d) {
     return d.outerRadius;
   }
   function d3_svg_arcStartAngle(d) {
     return d.startAngle;
   }
   function d3_svg_arcEndAngle(d) {
     return d.endAngle;
   }
   function d3_svg_line(projection) {
     var x = d3_geom_pointX, y = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, tension = .7;
     function line(data) {
       var segments = [], points = [], i = -1, n = data.length, d, fx = d3_functor(x), fy = d3_functor(y);
       function segment() {
         segments.push("M", interpolate(projection(points), tension));
       }
       while (++i < n) {
         if (defined.call(this, d = data[i], i)) {
           points.push([ +fx.call(this, d, i), +fy.call(this, d, i) ]);
         } else if (points.length) {
           segment();
           points = [];
         }
       }
       if (points.length) segment();
       return segments.length ? segments.join("") : null;
     }
     line.x = function(_) {
       if (!arguments.length) return x;
       x = _;
       return line;
     };
     line.y = function(_) {
       if (!arguments.length) return y;
       y = _;
       return line;
     };
     line.defined = function(_) {
       if (!arguments.length) return defined;
       defined = _;
       return line;
     };
     line.interpolate = function(_) {
       if (!arguments.length) return interpolateKey;
       if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
       return line;
     };
     line.tension = function(_) {
       if (!arguments.length) return tension;
       tension = _;
       return line;
     };
     return line;
   }
   d3.svg.line = function() {
     return d3_svg_line(d3_identity);
   };
   var d3_svg_lineInterpolators = d3.map({
     linear: d3_svg_lineLinear,
     "linear-closed": d3_svg_lineLinearClosed,
     step: d3_svg_lineStep,
     "step-before": d3_svg_lineStepBefore,
     "step-after": d3_svg_lineStepAfter,
     basis: d3_svg_lineBasis,
     "basis-open": d3_svg_lineBasisOpen,
     "basis-closed": d3_svg_lineBasisClosed,
     bundle: d3_svg_lineBundle,
     cardinal: d3_svg_lineCardinal,
     "cardinal-open": d3_svg_lineCardinalOpen,
     "cardinal-closed": d3_svg_lineCardinalClosed,
     monotone: d3_svg_lineMonotone
   });
   d3_svg_lineInterpolators.forEach(function(key, value) {
     value.key = key;
     value.closed = /-closed$/.test(key);
   });
   function d3_svg_lineLinear(points) {
     return points.join("L");
   }
   function d3_svg_lineLinearClosed(points) {
     return d3_svg_lineLinear(points) + "Z";
   }
   function d3_svg_lineStep(points) {
     var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
     while (++i < n) path.push("H", (p[0] + (p = points[i])[0]) / 2, "V", p[1]);
     if (n > 1) path.push("H", p[0]);
     return path.join("");
   }
   function d3_svg_lineStepBefore(points) {
     var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
     while (++i < n) path.push("V", (p = points[i])[1], "H", p[0]);
     return path.join("");
   }
   function d3_svg_lineStepAfter(points) {
     var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
     while (++i < n) path.push("H", (p = points[i])[0], "V", p[1]);
     return path.join("");
   }
   function d3_svg_lineCardinalOpen(points, tension) {
     return points.length < 4 ? d3_svg_lineLinear(points) : points[1] + d3_svg_lineHermite(points.slice(1, points.length - 1), d3_svg_lineCardinalTangents(points, tension));
   }
   function d3_svg_lineCardinalClosed(points, tension) {
     return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite((points.push(points[0]),
     points), d3_svg_lineCardinalTangents([ points[points.length - 2] ].concat(points, [ points[1] ]), tension));
   }
   function d3_svg_lineCardinal(points, tension) {
     return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineCardinalTangents(points, tension));
   }
   function d3_svg_lineHermite(points, tangents) {
     if (tangents.length < 1 || points.length != tangents.length && points.length != tangents.length + 2) {
       return d3_svg_lineLinear(points);
     }
     var quad = points.length != tangents.length, path = "", p0 = points[0], p = points[1], t0 = tangents[0], t = t0, pi = 1;
     if (quad) {
       path += "Q" + (p[0] - t0[0] * 2 / 3) + "," + (p[1] - t0[1] * 2 / 3) + "," + p[0] + "," + p[1];
       p0 = points[1];
       pi = 2;
     }
     if (tangents.length > 1) {
       t = tangents[1];
       p = points[pi];
       pi++;
       path += "C" + (p0[0] + t0[0]) + "," + (p0[1] + t0[1]) + "," + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
       for (var i = 2; i < tangents.length; i++, pi++) {
         p = points[pi];
         t = tangents[i];
         path += "S" + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
       }
     }
     if (quad) {
       var lp = points[pi];
       path += "Q" + (p[0] + t[0] * 2 / 3) + "," + (p[1] + t[1] * 2 / 3) + "," + lp[0] + "," + lp[1];
     }
     return path;
   }
   function d3_svg_lineCardinalTangents(points, tension) {
     var tangents = [], a = (1 - tension) / 2, p0, p1 = points[0], p2 = points[1], i = 1, n = points.length;
     while (++i < n) {
       p0 = p1;
       p1 = p2;
       p2 = points[i];
       tangents.push([ a * (p2[0] - p0[0]), a * (p2[1] - p0[1]) ]);
     }
     return tangents;
   }
   function d3_svg_lineBasis(points) {
     if (points.length < 3) return d3_svg_lineLinear(points);
     var i = 1, n = points.length, pi = points[0], x0 = pi[0], y0 = pi[1], px = [ x0, x0, x0, (pi = points[1])[0] ], py = [ y0, y0, y0, pi[1] ], path = [ x0, ",", y0, "L", d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
     points.push(points[n - 1]);
     while (++i <= n) {
       pi = points[i];
       px.shift();
       px.push(pi[0]);
       py.shift();
       py.push(pi[1]);
       d3_svg_lineBasisBezier(path, px, py);
     }
     points.pop();
     path.push("L", pi);
     return path.join("");
   }
   function d3_svg_lineBasisOpen(points) {
     if (points.length < 4) return d3_svg_lineLinear(points);
     var path = [], i = -1, n = points.length, pi, px = [ 0 ], py = [ 0 ];
     while (++i < 3) {
       pi = points[i];
       px.push(pi[0]);
       py.push(pi[1]);
     }
     path.push(d3_svg_lineDot4(d3_svg_lineBasisBezier3, px) + "," + d3_svg_lineDot4(d3_svg_lineBasisBezier3, py));
     --i;
     while (++i < n) {
       pi = points[i];
       px.shift();
       px.push(pi[0]);
       py.shift();
       py.push(pi[1]);
       d3_svg_lineBasisBezier(path, px, py);
     }
     return path.join("");
   }
   function d3_svg_lineBasisClosed(points) {
     var path, i = -1, n = points.length, m = n + 4, pi, px = [], py = [];
     while (++i < 4) {
       pi = points[i % n];
       px.push(pi[0]);
       py.push(pi[1]);
     }
     path = [ d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
     --i;
     while (++i < m) {
       pi = points[i % n];
       px.shift();
       px.push(pi[0]);
       py.shift();
       py.push(pi[1]);
       d3_svg_lineBasisBezier(path, px, py);
     }
     return path.join("");
   }
   function d3_svg_lineBundle(points, tension) {
     var n = points.length - 1;
     if (n) {
       var x0 = points[0][0], y0 = points[0][1], dx = points[n][0] - x0, dy = points[n][1] - y0, i = -1, p, t;
       while (++i <= n) {
         p = points[i];
         t = i / n;
         p[0] = tension * p[0] + (1 - tension) * (x0 + t * dx);
         p[1] = tension * p[1] + (1 - tension) * (y0 + t * dy);
       }
     }
     return d3_svg_lineBasis(points);
   }
   function d3_svg_lineDot4(a, b) {
     return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
   }
   var d3_svg_lineBasisBezier1 = [ 0, 2 / 3, 1 / 3, 0 ], d3_svg_lineBasisBezier2 = [ 0, 1 / 3, 2 / 3, 0 ], d3_svg_lineBasisBezier3 = [ 0, 1 / 6, 2 / 3, 1 / 6 ];
   function d3_svg_lineBasisBezier(path, x, y) {
     path.push("C", d3_svg_lineDot4(d3_svg_lineBasisBezier1, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier1, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, y));
   }
   function d3_svg_lineSlope(p0, p1) {
     return (p1[1] - p0[1]) / (p1[0] - p0[0]);
   }
   function d3_svg_lineFiniteDifferences(points) {
     var i = 0, j = points.length - 1, m = [], p0 = points[0], p1 = points[1], d = m[0] = d3_svg_lineSlope(p0, p1);
     while (++i < j) {
       m[i] = (d + (d = d3_svg_lineSlope(p0 = p1, p1 = points[i + 1]))) / 2;
     }
     m[i] = d;
     return m;
   }
   function d3_svg_lineMonotoneTangents(points) {
     var tangents = [], d, a, b, s, m = d3_svg_lineFiniteDifferences(points), i = -1, j = points.length - 1;
     while (++i < j) {
       d = d3_svg_lineSlope(points[i], points[i + 1]);
       if (abs(d) < ε) {
         m[i] = m[i + 1] = 0;
       } else {
         a = m[i] / d;
         b = m[i + 1] / d;
         s = a * a + b * b;
         if (s > 9) {
           s = d * 3 / Math.sqrt(s);
           m[i] = s * a;
           m[i + 1] = s * b;
         }
       }
     }
     i = -1;
     while (++i <= j) {
       s = (points[Math.min(j, i + 1)][0] - points[Math.max(0, i - 1)][0]) / (6 * (1 + m[i] * m[i]));
       tangents.push([ s || 0, m[i] * s || 0 ]);
     }
     return tangents;
   }
   function d3_svg_lineMonotone(points) {
     return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineMonotoneTangents(points));
   }
   d3.svg.line.radial = function() {
     var line = d3_svg_line(d3_svg_lineRadial);
     line.radius = line.x, delete line.x;
     line.angle = line.y, delete line.y;
     return line;
   };
   function d3_svg_lineRadial(points) {
     var point, i = -1, n = points.length, r, a;
     while (++i < n) {
       point = points[i];
       r = point[0];
       a = point[1] + d3_svg_arcOffset;
       point[0] = r * Math.cos(a);
       point[1] = r * Math.sin(a);
     }
     return points;
   }
   function d3_svg_area(projection) {
     var x0 = d3_geom_pointX, x1 = d3_geom_pointX, y0 = 0, y1 = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, interpolateReverse = interpolate, L = "L", tension = .7;
     function area(data) {
       var segments = [], points0 = [], points1 = [], i = -1, n = data.length, d, fx0 = d3_functor(x0), fy0 = d3_functor(y0), fx1 = x0 === x1 ? function() {
         return x;
       } : d3_functor(x1), fy1 = y0 === y1 ? function() {
         return y;
       } : d3_functor(y1), x, y;
       function segment() {
         segments.push("M", interpolate(projection(points1), tension), L, interpolateReverse(projection(points0.reverse()), tension), "Z");
       }
       while (++i < n) {
         if (defined.call(this, d = data[i], i)) {
           points0.push([ x = +fx0.call(this, d, i), y = +fy0.call(this, d, i) ]);
           points1.push([ +fx1.call(this, d, i), +fy1.call(this, d, i) ]);
         } else if (points0.length) {
           segment();
           points0 = [];
           points1 = [];
         }
       }
       if (points0.length) segment();
       return segments.length ? segments.join("") : null;
     }
     area.x = function(_) {
       if (!arguments.length) return x1;
       x0 = x1 = _;
       return area;
     };
     area.x0 = function(_) {
       if (!arguments.length) return x0;
       x0 = _;
       return area;
     };
     area.x1 = function(_) {
       if (!arguments.length) return x1;
       x1 = _;
       return area;
     };
     area.y = function(_) {
       if (!arguments.length) return y1;
       y0 = y1 = _;
       return area;
     };
     area.y0 = function(_) {
       if (!arguments.length) return y0;
       y0 = _;
       return area;
     };
     area.y1 = function(_) {
       if (!arguments.length) return y1;
       y1 = _;
       return area;
     };
     area.defined = function(_) {
       if (!arguments.length) return defined;
       defined = _;
       return area;
     };
     area.interpolate = function(_) {
       if (!arguments.length) return interpolateKey;
       if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
       interpolateReverse = interpolate.reverse || interpolate;
       L = interpolate.closed ? "M" : "L";
       return area;
     };
     area.tension = function(_) {
       if (!arguments.length) return tension;
       tension = _;
       return area;
     };
     return area;
   }
   d3_svg_lineStepBefore.reverse = d3_svg_lineStepAfter;
   d3_svg_lineStepAfter.reverse = d3_svg_lineStepBefore;
   d3.svg.area = function() {
     return d3_svg_area(d3_identity);
   };
   d3.svg.area.radial = function() {
     var area = d3_svg_area(d3_svg_lineRadial);
     area.radius = area.x, delete area.x;
     area.innerRadius = area.x0, delete area.x0;
     area.outerRadius = area.x1, delete area.x1;
     area.angle = area.y, delete area.y;
     area.startAngle = area.y0, delete area.y0;
     area.endAngle = area.y1, delete area.y1;
     return area;
   };
   d3.svg.chord = function() {
     var source = d3_source, target = d3_target, radius = d3_svg_chordRadius, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle;
     function chord(d, i) {
       var s = subgroup(this, source, d, i), t = subgroup(this, target, d, i);
       return "M" + s.p0 + arc(s.r, s.p1, s.a1 - s.a0) + (equals(s, t) ? curve(s.r, s.p1, s.r, s.p0) : curve(s.r, s.p1, t.r, t.p0) + arc(t.r, t.p1, t.a1 - t.a0) + curve(t.r, t.p1, s.r, s.p0)) + "Z";
     }
     function subgroup(self, f, d, i) {
       var subgroup = f.call(self, d, i), r = radius.call(self, subgroup, i), a0 = startAngle.call(self, subgroup, i) + d3_svg_arcOffset, a1 = endAngle.call(self, subgroup, i) + d3_svg_arcOffset;
       return {
         r: r,
         a0: a0,
         a1: a1,
         p0: [ r * Math.cos(a0), r * Math.sin(a0) ],
         p1: [ r * Math.cos(a1), r * Math.sin(a1) ]
       };
     }
     function equals(a, b) {
       return a.a0 == b.a0 && a.a1 == b.a1;
     }
     function arc(r, p, a) {
       return "A" + r + "," + r + " 0 " + +(a > π) + ",1 " + p;
     }
     function curve(r0, p0, r1, p1) {
       return "Q 0,0 " + p1;
     }
     chord.radius = function(v) {
       if (!arguments.length) return radius;
       radius = d3_functor(v);
       return chord;
     };
     chord.source = function(v) {
       if (!arguments.length) return source;
       source = d3_functor(v);
       return chord;
     };
     chord.target = function(v) {
       if (!arguments.length) return target;
       target = d3_functor(v);
       return chord;
     };
     chord.startAngle = function(v) {
       if (!arguments.length) return startAngle;
       startAngle = d3_functor(v);
       return chord;
     };
     chord.endAngle = function(v) {
       if (!arguments.length) return endAngle;
       endAngle = d3_functor(v);
       return chord;
     };
     return chord;
   };
   function d3_svg_chordRadius(d) {
     return d.radius;
   }
   d3.svg.diagonal = function() {
     var source = d3_source, target = d3_target, projection = d3_svg_diagonalProjection;
     function diagonal(d, i) {
       var p0 = source.call(this, d, i), p3 = target.call(this, d, i), m = (p0.y + p3.y) / 2, p = [ p0, {
         x: p0.x,
         y: m
       }, {
         x: p3.x,
         y: m
       }, p3 ];
       p = p.map(projection);
       return "M" + p[0] + "C" + p[1] + " " + p[2] + " " + p[3];
     }
     diagonal.source = function(x) {
       if (!arguments.length) return source;
       source = d3_functor(x);
       return diagonal;
     };
     diagonal.target = function(x) {
       if (!arguments.length) return target;
       target = d3_functor(x);
       return diagonal;
     };
     diagonal.projection = function(x) {
       if (!arguments.length) return projection;
       projection = x;
       return diagonal;
     };
     return diagonal;
   };
   function d3_svg_diagonalProjection(d) {
     return [ d.x, d.y ];
   }
   d3.svg.diagonal.radial = function() {
     var diagonal = d3.svg.diagonal(), projection = d3_svg_diagonalProjection, projection_ = diagonal.projection;
     diagonal.projection = function(x) {
       return arguments.length ? projection_(d3_svg_diagonalRadialProjection(projection = x)) : projection;
     };
     return diagonal;
   };
   function d3_svg_diagonalRadialProjection(projection) {
     return function() {
       var d = projection.apply(this, arguments), r = d[0], a = d[1] + d3_svg_arcOffset;
       return [ r * Math.cos(a), r * Math.sin(a) ];
     };
   }
   d3.svg.symbol = function() {
     var type = d3_svg_symbolType, size = d3_svg_symbolSize;
     function symbol(d, i) {
       return (d3_svg_symbols.get(type.call(this, d, i)) || d3_svg_symbolCircle)(size.call(this, d, i));
     }
     symbol.type = function(x) {
       if (!arguments.length) return type;
       type = d3_functor(x);
       return symbol;
     };
     symbol.size = function(x) {
       if (!arguments.length) return size;
       size = d3_functor(x);
       return symbol;
     };
     return symbol;
   };
   function d3_svg_symbolSize() {
     return 64;
   }
   function d3_svg_symbolType() {
     return "circle";
   }
   function d3_svg_symbolCircle(size) {
     var r = Math.sqrt(size / π);
     return "M0," + r + "A" + r + "," + r + " 0 1,1 0," + -r + "A" + r + "," + r + " 0 1,1 0," + r + "Z";
   }
   var d3_svg_symbols = d3.map({
     circle: d3_svg_symbolCircle,
     cross: function(size) {
       var r = Math.sqrt(size / 5) / 2;
       return "M" + -3 * r + "," + -r + "H" + -r + "V" + -3 * r + "H" + r + "V" + -r + "H" + 3 * r + "V" + r + "H" + r + "V" + 3 * r + "H" + -r + "V" + r + "H" + -3 * r + "Z";
     },
     diamond: function(size) {
       var ry = Math.sqrt(size / (2 * d3_svg_symbolTan30)), rx = ry * d3_svg_symbolTan30;
       return "M0," + -ry + "L" + rx + ",0" + " 0," + ry + " " + -rx + ",0" + "Z";
     },
     square: function(size) {
       var r = Math.sqrt(size) / 2;
       return "M" + -r + "," + -r + "L" + r + "," + -r + " " + r + "," + r + " " + -r + "," + r + "Z";
     },
     "triangle-down": function(size) {
       var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
       return "M0," + ry + "L" + rx + "," + -ry + " " + -rx + "," + -ry + "Z";
     },
     "triangle-up": function(size) {
       var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
       return "M0," + -ry + "L" + rx + "," + ry + " " + -rx + "," + ry + "Z";
     }
   });
   d3.svg.symbolTypes = d3_svg_symbols.keys();
   var d3_svg_symbolSqrt3 = Math.sqrt(3), d3_svg_symbolTan30 = Math.tan(30 * d3_radians);
   function d3_transition(groups, id) {
     d3_subclass(groups, d3_transitionPrototype);
     groups.id = id;
     return groups;
   }
   var d3_transitionPrototype = [], d3_transitionId = 0, d3_transitionInheritId, d3_transitionInherit;
   d3_transitionPrototype.call = d3_selectionPrototype.call;
   d3_transitionPrototype.empty = d3_selectionPrototype.empty;
   d3_transitionPrototype.node = d3_selectionPrototype.node;
   d3_transitionPrototype.size = d3_selectionPrototype.size;
   d3.transition = function(selection) {
     return arguments.length ? d3_transitionInheritId ? selection.transition() : selection : d3_selectionRoot.transition();
   };
   d3.transition.prototype = d3_transitionPrototype;
   d3_transitionPrototype.select = function(selector) {
     var id = this.id, subgroups = [], subgroup, subnode, node;
     selector = d3_selection_selector(selector);
     for (var j = -1, m = this.length; ++j < m; ) {
       subgroups.push(subgroup = []);
       for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
         if ((node = group[i]) && (subnode = selector.call(node, node.__data__, i, j))) {
           if ("__data__" in node) subnode.__data__ = node.__data__;
           d3_transitionNode(subnode, i, id, node.__transition__[id]);
           subgroup.push(subnode);
         } else {
           subgroup.push(null);
         }
       }
     }
     return d3_transition(subgroups, id);
   };
   d3_transitionPrototype.selectAll = function(selector) {
     var id = this.id, subgroups = [], subgroup, subnodes, node, subnode, transition;
     selector = d3_selection_selectorAll(selector);
     for (var j = -1, m = this.length; ++j < m; ) {
       for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
         if (node = group[i]) {
           transition = node.__transition__[id];
           subnodes = selector.call(node, node.__data__, i, j);
           subgroups.push(subgroup = []);
           for (var k = -1, o = subnodes.length; ++k < o; ) {
             if (subnode = subnodes[k]) d3_transitionNode(subnode, k, id, transition);
             subgroup.push(subnode);
           }
         }
       }
     }
     return d3_transition(subgroups, id);
   };
   d3_transitionPrototype.filter = function(filter) {
     var subgroups = [], subgroup, group, node;
     if (typeof filter !== "function") filter = d3_selection_filter(filter);
     for (var j = 0, m = this.length; j < m; j++) {
       subgroups.push(subgroup = []);
       for (var group = this[j], i = 0, n = group.length; i < n; i++) {
         if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
           subgroup.push(node);
         }
       }
     }
     return d3_transition(subgroups, this.id);
   };
   d3_transitionPrototype.tween = function(name, tween) {
     var id = this.id;
     if (arguments.length < 2) return this.node().__transition__[id].tween.get(name);
     return d3_selection_each(this, tween == null ? function(node) {
       node.__transition__[id].tween.remove(name);
     } : function(node) {
       node.__transition__[id].tween.set(name, tween);
     });
   };
   function d3_transition_tween(groups, name, value, tween) {
     var id = groups.id;
     return d3_selection_each(groups, typeof value === "function" ? function(node, i, j) {
       node.__transition__[id].tween.set(name, tween(value.call(node, node.__data__, i, j)));
     } : (value = tween(value), function(node) {
       node.__transition__[id].tween.set(name, value);
     }));
   }
   d3_transitionPrototype.attr = function(nameNS, value) {
     if (arguments.length < 2) {
       for (value in nameNS) this.attr(value, nameNS[value]);
       return this;
     }
     var interpolate = nameNS == "transform" ? d3_interpolateTransform : d3_interpolate, name = d3.ns.qualify(nameNS);
     function attrNull() {
       this.removeAttribute(name);
     }
     function attrNullNS() {
       this.removeAttributeNS(name.space, name.local);
     }
     function attrTween(b) {
       return b == null ? attrNull : (b += "", function() {
         var a = this.getAttribute(name), i;
         return a !== b && (i = interpolate(a, b), function(t) {
           this.setAttribute(name, i(t));
         });
       });
     }
     function attrTweenNS(b) {
       return b == null ? attrNullNS : (b += "", function() {
         var a = this.getAttributeNS(name.space, name.local), i;
         return a !== b && (i = interpolate(a, b), function(t) {
           this.setAttributeNS(name.space, name.local, i(t));
         });
       });
     }
     return d3_transition_tween(this, "attr." + nameNS, value, name.local ? attrTweenNS : attrTween);
   };
   d3_transitionPrototype.attrTween = function(nameNS, tween) {
     var name = d3.ns.qualify(nameNS);
     function attrTween(d, i) {
       var f = tween.call(this, d, i, this.getAttribute(name));
       return f && function(t) {
         this.setAttribute(name, f(t));
       };
     }
     function attrTweenNS(d, i) {
       var f = tween.call(this, d, i, this.getAttributeNS(name.space, name.local));
       return f && function(t) {
         this.setAttributeNS(name.space, name.local, f(t));
       };
     }
     return this.tween("attr." + nameNS, name.local ? attrTweenNS : attrTween);
   };
   d3_transitionPrototype.style = function(name, value, priority) {
     var n = arguments.length;
     if (n < 3) {
       if (typeof name !== "string") {
         if (n < 2) value = "";
         for (priority in name) this.style(priority, name[priority], value);
         return this;
       }
       priority = "";
     }
     function styleNull() {
       this.style.removeProperty(name);
     }
     function styleString(b) {
       return b == null ? styleNull : (b += "", function() {
         var a = d3_window.getComputedStyle(this, null).getPropertyValue(name), i;
         return a !== b && (i = d3_interpolate(a, b), function(t) {
           this.style.setProperty(name, i(t), priority);
         });
       });
     }
     return d3_transition_tween(this, "style." + name, value, styleString);
   };
   d3_transitionPrototype.styleTween = function(name, tween, priority) {
     if (arguments.length < 3) priority = "";
     function styleTween(d, i) {
       var f = tween.call(this, d, i, d3_window.getComputedStyle(this, null).getPropertyValue(name));
       return f && function(t) {
         this.style.setProperty(name, f(t), priority);
       };
     }
     return this.tween("style." + name, styleTween);
   };
   d3_transitionPrototype.text = function(value) {
     return d3_transition_tween(this, "text", value, d3_transition_text);
   };
   function d3_transition_text(b) {
     if (b == null) b = "";
     return function() {
       this.textContent = b;
     };
   }
   d3_transitionPrototype.remove = function() {
     return this.each("end.transition", function() {
       var p;
       if (this.__transition__.count < 2 && (p = this.parentNode)) p.removeChild(this);
     });
   };
   d3_transitionPrototype.ease = function(value) {
     var id = this.id;
     if (arguments.length < 1) return this.node().__transition__[id].ease;
     if (typeof value !== "function") value = d3.ease.apply(d3, arguments);
     return d3_selection_each(this, function(node) {
       node.__transition__[id].ease = value;
     });
   };
   d3_transitionPrototype.delay = function(value) {
     var id = this.id;
     return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
       node.__transition__[id].delay = +value.call(node, node.__data__, i, j);
     } : (value = +value, function(node) {
       node.__transition__[id].delay = value;
     }));
   };
   d3_transitionPrototype.duration = function(value) {
     var id = this.id;
     return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
       node.__transition__[id].duration = Math.max(1, value.call(node, node.__data__, i, j));
     } : (value = Math.max(1, value), function(node) {
       node.__transition__[id].duration = value;
     }));
   };
   d3_transitionPrototype.each = function(type, listener) {
     var id = this.id;
     if (arguments.length < 2) {
       var inherit = d3_transitionInherit, inheritId = d3_transitionInheritId;
       d3_transitionInheritId = id;
       d3_selection_each(this, function(node, i, j) {
         d3_transitionInherit = node.__transition__[id];
         type.call(node, node.__data__, i, j);
       });
       d3_transitionInherit = inherit;
       d3_transitionInheritId = inheritId;
     } else {
       d3_selection_each(this, function(node) {
         var transition = node.__transition__[id];
         (transition.event || (transition.event = d3.dispatch("start", "end"))).on(type, listener);
       });
     }
     return this;
   };
   d3_transitionPrototype.transition = function() {
     var id0 = this.id, id1 = ++d3_transitionId, subgroups = [], subgroup, group, node, transition;
     for (var j = 0, m = this.length; j < m; j++) {
       subgroups.push(subgroup = []);
       for (var group = this[j], i = 0, n = group.length; i < n; i++) {
         if (node = group[i]) {
           transition = Object.create(node.__transition__[id0]);
           transition.delay += transition.duration;
           d3_transitionNode(node, i, id1, transition);
         }
         subgroup.push(node);
       }
     }
     return d3_transition(subgroups, id1);
   };
   function d3_transitionNode(node, i, id, inherit) {
     var lock = node.__transition__ || (node.__transition__ = {
       active: 0,
       count: 0
     }), transition = lock[id];
     if (!transition) {
       var time = inherit.time;
       transition = lock[id] = {
         tween: new d3_Map(),
         time: time,
         ease: inherit.ease,
         delay: inherit.delay,
         duration: inherit.duration
       };
       ++lock.count;
       d3.timer(function(elapsed) {
         var d = node.__data__, ease = transition.ease, delay = transition.delay, duration = transition.duration, timer = d3_timer_active, tweened = [];
         timer.t = delay + time;
         if (delay <= elapsed) return start(elapsed - delay);
         timer.c = start;
         function start(elapsed) {
           if (lock.active > id) return stop();
           lock.active = id;
           transition.event && transition.event.start.call(node, d, i);
           transition.tween.forEach(function(key, value) {
             if (value = value.call(node, d, i)) {
               tweened.push(value);
             }
           });
           d3.timer(function() {
             timer.c = tick(elapsed || 1) ? d3_true : tick;
             return 1;
           }, 0, time);
         }
         function tick(elapsed) {
           if (lock.active !== id) return stop();
           var t = elapsed / duration, e = ease(t), n = tweened.length;
           while (n > 0) {
             tweened[--n].call(node, e);
           }
           if (t >= 1) {
             transition.event && transition.event.end.call(node, d, i);
             return stop();
           }
         }
         function stop() {
           if (--lock.count) delete lock[id]; else delete node.__transition__;
           return 1;
         }
       }, 0, time);
     }
   }
   d3.svg.axis = function() {
     var scale = d3.scale.linear(), orient = d3_svg_axisDefaultOrient, innerTickSize = 6, outerTickSize = 6, tickPadding = 3, tickArguments_ = [ 10 ], tickValues = null, tickFormat_;
     function axis(g) {
       g.each(function() {
         var g = d3.select(this);
         var scale0 = this.__chart__ || scale, scale1 = this.__chart__ = scale.copy();
         var ticks = tickValues == null ? scale1.ticks ? scale1.ticks.apply(scale1, tickArguments_) : scale1.domain() : tickValues, tickFormat = tickFormat_ == null ? scale1.tickFormat ? scale1.tickFormat.apply(scale1, tickArguments_) : d3_identity : tickFormat_, tick = g.selectAll(".tick").data(ticks, scale1), tickEnter = tick.enter().insert("g", ".domain").attr("class", "tick").style("opacity", ε), tickExit = d3.transition(tick.exit()).style("opacity", ε).remove(), tickUpdate = d3.transition(tick).style("opacity", 1), tickTransform;
         var range = d3_scaleRange(scale1), path = g.selectAll(".domain").data([ 0 ]), pathUpdate = (path.enter().append("path").attr("class", "domain"),
         d3.transition(path));
         tickEnter.append("line");
         tickEnter.append("text");
         var lineEnter = tickEnter.select("line"), lineUpdate = tickUpdate.select("line"), text = tick.select("text").text(tickFormat), textEnter = tickEnter.select("text"), textUpdate = tickUpdate.select("text");
         switch (orient) {
          case "bottom":
           {
             tickTransform = d3_svg_axisX;
             lineEnter.attr("y2", innerTickSize);
             textEnter.attr("y", Math.max(innerTickSize, 0) + tickPadding);
             lineUpdate.attr("x2", 0).attr("y2", innerTickSize);
             textUpdate.attr("x", 0).attr("y", Math.max(innerTickSize, 0) + tickPadding);
             text.attr("dy", ".71em").style("text-anchor", "middle");
             pathUpdate.attr("d", "M" + range[0] + "," + outerTickSize + "V0H" + range[1] + "V" + outerTickSize);
             break;
           }
          case "top":
           {
             tickTransform = d3_svg_axisX;
             lineEnter.attr("y2", -innerTickSize);
             textEnter.attr("y", -(Math.max(innerTickSize, 0) + tickPadding));
             lineUpdate.attr("x2", 0).attr("y2", -innerTickSize);
             textUpdate.attr("x", 0).attr("y", -(Math.max(innerTickSize, 0) + tickPadding));
             text.attr("dy", "0em").style("text-anchor", "middle");
             pathUpdate.attr("d", "M" + range[0] + "," + -outerTickSize + "V0H" + range[1] + "V" + -outerTickSize);
             break;
           }
          case "left":
           {
             tickTransform = d3_svg_axisY;
             lineEnter.attr("x2", -innerTickSize);
             textEnter.attr("x", -(Math.max(innerTickSize, 0) + tickPadding));
             lineUpdate.attr("x2", -innerTickSize).attr("y2", 0);
             textUpdate.attr("x", -(Math.max(innerTickSize, 0) + tickPadding)).attr("y", 0);
             text.attr("dy", ".32em").style("text-anchor", "end");
             pathUpdate.attr("d", "M" + -outerTickSize + "," + range[0] + "H0V" + range[1] + "H" + -outerTickSize);
             break;
           }
          case "right":
           {
             tickTransform = d3_svg_axisY;
             lineEnter.attr("x2", innerTickSize);
             textEnter.attr("x", Math.max(innerTickSize, 0) + tickPadding);
             lineUpdate.attr("x2", innerTickSize).attr("y2", 0);
             textUpdate.attr("x", Math.max(innerTickSize, 0) + tickPadding).attr("y", 0);
             text.attr("dy", ".32em").style("text-anchor", "start");
             pathUpdate.attr("d", "M" + outerTickSize + "," + range[0] + "H0V" + range[1] + "H" + outerTickSize);
             break;
           }
         }
         if (scale1.rangeBand) {
           var x = scale1, dx = x.rangeBand() / 2;
           scale0 = scale1 = function(d) {
             return x(d) + dx;
           };
         } else if (scale0.rangeBand) {
           scale0 = scale1;
         } else {
           tickExit.call(tickTransform, scale1);
         }
         tickEnter.call(tickTransform, scale0);
         tickUpdate.call(tickTransform, scale1);
       });
     }
     axis.scale = function(x) {
       if (!arguments.length) return scale;
       scale = x;
       return axis;
     };
     axis.orient = function(x) {
       if (!arguments.length) return orient;
       orient = x in d3_svg_axisOrients ? x + "" : d3_svg_axisDefaultOrient;
       return axis;
     };
     axis.ticks = function() {
       if (!arguments.length) return tickArguments_;
       tickArguments_ = arguments;
       return axis;
     };
     axis.tickValues = function(x) {
       if (!arguments.length) return tickValues;
       tickValues = x;
       return axis;
     };
     axis.tickFormat = function(x) {
       if (!arguments.length) return tickFormat_;
       tickFormat_ = x;
       return axis;
     };
     axis.tickSize = function(x) {
       var n = arguments.length;
       if (!n) return innerTickSize;
       innerTickSize = +x;
       outerTickSize = +arguments[n - 1];
       return axis;
     };
     axis.innerTickSize = function(x) {
       if (!arguments.length) return innerTickSize;
       innerTickSize = +x;
       return axis;
     };
     axis.outerTickSize = function(x) {
       if (!arguments.length) return outerTickSize;
       outerTickSize = +x;
       return axis;
     };
     axis.tickPadding = function(x) {
       if (!arguments.length) return tickPadding;
       tickPadding = +x;
       return axis;
     };
     axis.tickSubdivide = function() {
       return arguments.length && axis;
     };
     return axis;
   };
   var d3_svg_axisDefaultOrient = "bottom", d3_svg_axisOrients = {
     top: 1,
     right: 1,
     bottom: 1,
     left: 1
   };
   function d3_svg_axisX(selection, x) {
     selection.attr("transform", function(d) {
       return "translate(" + x(d) + ",0)";
     });
   }
   function d3_svg_axisY(selection, y) {
     selection.attr("transform", function(d) {
       return "translate(0," + y(d) + ")";
     });
   }
   d3.svg.brush = function() {
     var event = d3_eventDispatch(brush, "brushstart", "brush", "brushend"), x = null, y = null, xExtent = [ 0, 0 ], yExtent = [ 0, 0 ], xExtentDomain, yExtentDomain, xClamp = true, yClamp = true, resizes = d3_svg_brushResizes[0];
     function brush(g) {
       g.each(function() {
         var g = d3.select(this).style("pointer-events", "all").style("-webkit-tap-highlight-color", "rgba(0,0,0,0)").on("mousedown.brush", brushstart).on("touchstart.brush", brushstart);
         var background = g.selectAll(".background").data([ 0 ]);
         background.enter().append("rect").attr("class", "background").style("visibility", "hidden").style("cursor", "crosshair");
         g.selectAll(".extent").data([ 0 ]).enter().append("rect").attr("class", "extent").style("cursor", "move");
         var resize = g.selectAll(".resize").data(resizes, d3_identity);
         resize.exit().remove();
         resize.enter().append("g").attr("class", function(d) {
           return "resize " + d;
         }).style("cursor", function(d) {
           return d3_svg_brushCursor[d];
         }).append("rect").attr("x", function(d) {
           return /[ew]$/.test(d) ? -3 : null;
         }).attr("y", function(d) {
           return /^[ns]/.test(d) ? -3 : null;
         }).attr("width", 6).attr("height", 6).style("visibility", "hidden");
         resize.style("display", brush.empty() ? "none" : null);
         var gUpdate = d3.transition(g), backgroundUpdate = d3.transition(background), range;
         if (x) {
           range = d3_scaleRange(x);
           backgroundUpdate.attr("x", range[0]).attr("width", range[1] - range[0]);
           redrawX(gUpdate);
         }
         if (y) {
           range = d3_scaleRange(y);
           backgroundUpdate.attr("y", range[0]).attr("height", range[1] - range[0]);
           redrawY(gUpdate);
         }
         redraw(gUpdate);
       });
     }
     brush.event = function(g) {
       g.each(function() {
         var event_ = event.of(this, arguments), extent1 = {
           x: xExtent,
           y: yExtent,
           i: xExtentDomain,
           j: yExtentDomain
         }, extent0 = this.__chart__ || extent1;
         this.__chart__ = extent1;
         if (d3_transitionInheritId) {
           d3.select(this).transition().each("start.brush", function() {
             xExtentDomain = extent0.i;
             yExtentDomain = extent0.j;
             xExtent = extent0.x;
             yExtent = extent0.y;
             event_({
               type: "brushstart"
             });
           }).tween("brush:brush", function() {
             var xi = d3_interpolateArray(xExtent, extent1.x), yi = d3_interpolateArray(yExtent, extent1.y);
             xExtentDomain = yExtentDomain = null;
             return function(t) {
               xExtent = extent1.x = xi(t);
               yExtent = extent1.y = yi(t);
               event_({
                 type: "brush",
                 mode: "resize"
               });
             };
           }).each("end.brush", function() {
             xExtentDomain = extent1.i;
             yExtentDomain = extent1.j;
             event_({
               type: "brush",
               mode: "resize"
             });
             event_({
               type: "brushend"
             });
           });
         } else {
           event_({
             type: "brushstart"
           });
           event_({
             type: "brush",
             mode: "resize"
           });
           event_({
             type: "brushend"
           });
         }
       });
     };
     function redraw(g) {
       g.selectAll(".resize").attr("transform", function(d) {
         return "translate(" + xExtent[+/e$/.test(d)] + "," + yExtent[+/^s/.test(d)] + ")";
       });
     }
     function redrawX(g) {
       g.select(".extent").attr("x", xExtent[0]);
       g.selectAll(".extent,.n>rect,.s>rect").attr("width", xExtent[1] - xExtent[0]);
     }
     function redrawY(g) {
       g.select(".extent").attr("y", yExtent[0]);
       g.selectAll(".extent,.e>rect,.w>rect").attr("height", yExtent[1] - yExtent[0]);
     }
     function brushstart() {
       var target = this, eventTarget = d3.select(d3.event.target), event_ = event.of(target, arguments), g = d3.select(target), resizing = eventTarget.datum(), resizingX = !/^(n|s)$/.test(resizing) && x, resizingY = !/^(e|w)$/.test(resizing) && y, dragging = eventTarget.classed("extent"), dragRestore = d3_event_dragSuppress(), center, origin = d3.mouse(target), offset;
       var w = d3.select(d3_window).on("keydown.brush", keydown).on("keyup.brush", keyup);
       if (d3.event.changedTouches) {
         w.on("touchmove.brush", brushmove).on("touchend.brush", brushend);
       } else {
         w.on("mousemove.brush", brushmove).on("mouseup.brush", brushend);
       }
       g.interrupt().selectAll("*").interrupt();
       if (dragging) {
         origin[0] = xExtent[0] - origin[0];
         origin[1] = yExtent[0] - origin[1];
       } else if (resizing) {
         var ex = +/w$/.test(resizing), ey = +/^n/.test(resizing);
         offset = [ xExtent[1 - ex] - origin[0], yExtent[1 - ey] - origin[1] ];
         origin[0] = xExtent[ex];
         origin[1] = yExtent[ey];
       } else if (d3.event.altKey) center = origin.slice();
       g.style("pointer-events", "none").selectAll(".resize").style("display", null);
       d3.select("body").style("cursor", eventTarget.style("cursor"));
       event_({
         type: "brushstart"
       });
       brushmove();
       function keydown() {
         if (d3.event.keyCode == 32) {
           if (!dragging) {
             center = null;
             origin[0] -= xExtent[1];
             origin[1] -= yExtent[1];
             dragging = 2;
           }
           d3_eventPreventDefault();
         }
       }
       function keyup() {
         if (d3.event.keyCode == 32 && dragging == 2) {
           origin[0] += xExtent[1];
           origin[1] += yExtent[1];
           dragging = 0;
           d3_eventPreventDefault();
         }
       }
       function brushmove() {
         var point = d3.mouse(target), moved = false;
         if (offset) {
           point[0] += offset[0];
           point[1] += offset[1];
         }
         if (!dragging) {
           if (d3.event.altKey) {
             if (!center) center = [ (xExtent[0] + xExtent[1]) / 2, (yExtent[0] + yExtent[1]) / 2 ];
             origin[0] = xExtent[+(point[0] < center[0])];
             origin[1] = yExtent[+(point[1] < center[1])];
           } else center = null;
         }
         if (resizingX && move1(point, x, 0)) {
           redrawX(g);
           moved = true;
         }
         if (resizingY && move1(point, y, 1)) {
           redrawY(g);
           moved = true;
         }
         if (moved) {
           redraw(g);
           event_({
             type: "brush",
             mode: dragging ? "move" : "resize"
           });
         }
       }
       function move1(point, scale, i) {
         var range = d3_scaleRange(scale), r0 = range[0], r1 = range[1], position = origin[i], extent = i ? yExtent : xExtent, size = extent[1] - extent[0], min, max;
         if (dragging) {
           r0 -= position;
           r1 -= size + position;
         }
         min = (i ? yClamp : xClamp) ? Math.max(r0, Math.min(r1, point[i])) : point[i];
         if (dragging) {
           max = (min += position) + size;
         } else {
           if (center) position = Math.max(r0, Math.min(r1, 2 * center[i] - min));
           if (position < min) {
             max = min;
             min = position;
           } else {
             max = position;
           }
         }
         if (extent[0] != min || extent[1] != max) {
           if (i) yExtentDomain = null; else xExtentDomain = null;
           extent[0] = min;
           extent[1] = max;
           return true;
         }
       }
       function brushend() {
         brushmove();
         g.style("pointer-events", "all").selectAll(".resize").style("display", brush.empty() ? "none" : null);
         d3.select("body").style("cursor", null);
         w.on("mousemove.brush", null).on("mouseup.brush", null).on("touchmove.brush", null).on("touchend.brush", null).on("keydown.brush", null).on("keyup.brush", null);
         dragRestore();
         event_({
           type: "brushend"
         });
       }
     }
     brush.x = function(z) {
       if (!arguments.length) return x;
       x = z;
       resizes = d3_svg_brushResizes[!x << 1 | !y];
       return brush;
     };
     brush.y = function(z) {
       if (!arguments.length) return y;
       y = z;
       resizes = d3_svg_brushResizes[!x << 1 | !y];
       return brush;
     };
     brush.clamp = function(z) {
       if (!arguments.length) return x && y ? [ xClamp, yClamp ] : x ? xClamp : y ? yClamp : null;
       if (x && y) xClamp = !!z[0], yClamp = !!z[1]; else if (x) xClamp = !!z; else if (y) yClamp = !!z;
       return brush;
     };
     brush.extent = function(z) {
       var x0, x1, y0, y1, t;
       if (!arguments.length) {
         if (x) {
           if (xExtentDomain) {
             x0 = xExtentDomain[0], x1 = xExtentDomain[1];
           } else {
             x0 = xExtent[0], x1 = xExtent[1];
             if (x.invert) x0 = x.invert(x0), x1 = x.invert(x1);
             if (x1 < x0) t = x0, x0 = x1, x1 = t;
           }
         }
         if (y) {
           if (yExtentDomain) {
             y0 = yExtentDomain[0], y1 = yExtentDomain[1];
           } else {
             y0 = yExtent[0], y1 = yExtent[1];
             if (y.invert) y0 = y.invert(y0), y1 = y.invert(y1);
             if (y1 < y0) t = y0, y0 = y1, y1 = t;
           }
         }
         return x && y ? [ [ x0, y0 ], [ x1, y1 ] ] : x ? [ x0, x1 ] : y && [ y0, y1 ];
       }
       if (x) {
         x0 = z[0], x1 = z[1];
         if (y) x0 = x0[0], x1 = x1[0];
         xExtentDomain = [ x0, x1 ];
         if (x.invert) x0 = x(x0), x1 = x(x1);
         if (x1 < x0) t = x0, x0 = x1, x1 = t;
         if (x0 != xExtent[0] || x1 != xExtent[1]) xExtent = [ x0, x1 ];
       }
       if (y) {
         y0 = z[0], y1 = z[1];
         if (x) y0 = y0[1], y1 = y1[1];
         yExtentDomain = [ y0, y1 ];
         if (y.invert) y0 = y(y0), y1 = y(y1);
         if (y1 < y0) t = y0, y0 = y1, y1 = t;
         if (y0 != yExtent[0] || y1 != yExtent[1]) yExtent = [ y0, y1 ];
       }
       return brush;
     };
     brush.clear = function() {
       if (!brush.empty()) {
         xExtent = [ 0, 0 ], yExtent = [ 0, 0 ];
         xExtentDomain = yExtentDomain = null;
       }
       return brush;
     };
     brush.empty = function() {
       return !!x && xExtent[0] == xExtent[1] || !!y && yExtent[0] == yExtent[1];
     };
     return d3.rebind(brush, event, "on");
   };
   var d3_svg_brushCursor = {
     n: "ns-resize",
     e: "ew-resize",
     s: "ns-resize",
     w: "ew-resize",
     nw: "nwse-resize",
     ne: "nesw-resize",
     se: "nwse-resize",
     sw: "nesw-resize"
   };
   var d3_svg_brushResizes = [ [ "n", "e", "s", "w", "nw", "ne", "se", "sw" ], [ "e", "w" ], [ "n", "s" ], [] ];
   var d3_time_format = d3_time.format = d3_locale_enUS.timeFormat;
   var d3_time_formatUtc = d3_time_format.utc;
   var d3_time_formatIso = d3_time_formatUtc("%Y-%m-%dT%H:%M:%S.%LZ");
   d3_time_format.iso = Date.prototype.toISOString && +new Date("2000-01-01T00:00:00.000Z") ? d3_time_formatIsoNative : d3_time_formatIso;
   function d3_time_formatIsoNative(date) {
     return date.toISOString();
   }
   d3_time_formatIsoNative.parse = function(string) {
     var date = new Date(string);
     return isNaN(date) ? null : date;
   };
   d3_time_formatIsoNative.toString = d3_time_formatIso.toString;
   d3_time.second = d3_time_interval(function(date) {
     return new d3_date(Math.floor(date / 1e3) * 1e3);
   }, function(date, offset) {
     date.setTime(date.getTime() + Math.floor(offset) * 1e3);
   }, function(date) {
     return date.getSeconds();
   });
   d3_time.seconds = d3_time.second.range;
   d3_time.seconds.utc = d3_time.second.utc.range;
   d3_time.minute = d3_time_interval(function(date) {
     return new d3_date(Math.floor(date / 6e4) * 6e4);
   }, function(date, offset) {
     date.setTime(date.getTime() + Math.floor(offset) * 6e4);
   }, function(date) {
     return date.getMinutes();
   });
   d3_time.minutes = d3_time.minute.range;
   d3_time.minutes.utc = d3_time.minute.utc.range;
   d3_time.hour = d3_time_interval(function(date) {
     var timezone = date.getTimezoneOffset() / 60;
     return new d3_date((Math.floor(date / 36e5 - timezone) + timezone) * 36e5);
   }, function(date, offset) {
     date.setTime(date.getTime() + Math.floor(offset) * 36e5);
   }, function(date) {
     return date.getHours();
   });
   d3_time.hours = d3_time.hour.range;
   d3_time.hours.utc = d3_time.hour.utc.range;
   d3_time.month = d3_time_interval(function(date) {
     date = d3_time.day(date);
     date.setDate(1);
     return date;
   }, function(date, offset) {
     date.setMonth(date.getMonth() + offset);
   }, function(date) {
     return date.getMonth();
   });
   d3_time.months = d3_time.month.range;
   d3_time.months.utc = d3_time.month.utc.range;
   function d3_time_scale(linear, methods, format) {
     function scale(x) {
       return linear(x);
     }
     scale.invert = function(x) {
       return d3_time_scaleDate(linear.invert(x));
     };
     scale.domain = function(x) {
       if (!arguments.length) return linear.domain().map(d3_time_scaleDate);
       linear.domain(x);
       return scale;
     };
     function tickMethod(extent, count) {
       var span = extent[1] - extent[0], target = span / count, i = d3.bisect(d3_time_scaleSteps, target);
       return i == d3_time_scaleSteps.length ? [ methods.year, d3_scale_linearTickRange(extent.map(function(d) {
         return d / 31536e6;
       }), count)[2] ] : !i ? [ d3_time_scaleMilliseconds, d3_scale_linearTickRange(extent, count)[2] ] : methods[target / d3_time_scaleSteps[i - 1] < d3_time_scaleSteps[i] / target ? i - 1 : i];
     }
     scale.nice = function(interval, skip) {
       var domain = scale.domain(), extent = d3_scaleExtent(domain), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" && tickMethod(extent, interval);
       if (method) interval = method[0], skip = method[1];
       function skipped(date) {
         return !isNaN(date) && !interval.range(date, d3_time_scaleDate(+date + 1), skip).length;
       }
       return scale.domain(d3_scale_nice(domain, skip > 1 ? {
         floor: function(date) {
           while (skipped(date = interval.floor(date))) date = d3_time_scaleDate(date - 1);
           return date;
         },
         ceil: function(date) {
           while (skipped(date = interval.ceil(date))) date = d3_time_scaleDate(+date + 1);
           return date;
         }
       } : interval));
     };
     scale.ticks = function(interval, skip) {
       var extent = d3_scaleExtent(scale.domain()), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" ? tickMethod(extent, interval) : !interval.range && [ {
         range: interval
       }, skip ];
       if (method) interval = method[0], skip = method[1];
       return interval.range(extent[0], d3_time_scaleDate(+extent[1] + 1), skip < 1 ? 1 : skip);
     };
     scale.tickFormat = function() {
       return format;
     };
     scale.copy = function() {
       return d3_time_scale(linear.copy(), methods, format);
     };
     return d3_scale_linearRebind(scale, linear);
   }
   function d3_time_scaleDate(t) {
     return new Date(t);
   }
   var d3_time_scaleSteps = [ 1e3, 5e3, 15e3, 3e4, 6e4, 3e5, 9e5, 18e5, 36e5, 108e5, 216e5, 432e5, 864e5, 1728e5, 6048e5, 2592e6, 7776e6, 31536e6 ];
   var d3_time_scaleLocalMethods = [ [ d3_time.second, 1 ], [ d3_time.second, 5 ], [ d3_time.second, 15 ], [ d3_time.second, 30 ], [ d3_time.minute, 1 ], [ d3_time.minute, 5 ], [ d3_time.minute, 15 ], [ d3_time.minute, 30 ], [ d3_time.hour, 1 ], [ d3_time.hour, 3 ], [ d3_time.hour, 6 ], [ d3_time.hour, 12 ], [ d3_time.day, 1 ], [ d3_time.day, 2 ], [ d3_time.week, 1 ], [ d3_time.month, 1 ], [ d3_time.month, 3 ], [ d3_time.year, 1 ] ];
   var d3_time_scaleLocalFormat = d3_time_format.multi([ [ ".%L", function(d) {
     return d.getMilliseconds();
   } ], [ ":%S", function(d) {
     return d.getSeconds();
   } ], [ "%I:%M", function(d) {
     return d.getMinutes();
   } ], [ "%I %p", function(d) {
     return d.getHours();
   } ], [ "%a %d", function(d) {
     return d.getDay() && d.getDate() != 1;
   } ], [ "%b %d", function(d) {
     return d.getDate() != 1;
   } ], [ "%B", function(d) {
     return d.getMonth();
   } ], [ "%Y", d3_true ] ]);
   var d3_time_scaleMilliseconds = {
     range: function(start, stop, step) {
       return d3.range(+start, +stop, step).map(d3_time_scaleDate);
     },
     floor: d3_identity,
     ceil: d3_identity
   };
   d3_time_scaleLocalMethods.year = d3_time.year;
   d3_time.scale = function() {
     return d3_time_scale(d3.scale.linear(), d3_time_scaleLocalMethods, d3_time_scaleLocalFormat);
   };
   var d3_time_scaleUtcMethods = d3_time_scaleLocalMethods.map(function(m) {
     return [ m[0].utc, m[1] ];
   });
   var d3_time_scaleUtcFormat = d3_time_formatUtc.multi([ [ ".%L", function(d) {
     return d.getUTCMilliseconds();
   } ], [ ":%S", function(d) {
     return d.getUTCSeconds();
   } ], [ "%I:%M", function(d) {
     return d.getUTCMinutes();
   } ], [ "%I %p", function(d) {
     return d.getUTCHours();
   } ], [ "%a %d", function(d) {
     return d.getUTCDay() && d.getUTCDate() != 1;
   } ], [ "%b %d", function(d) {
     return d.getUTCDate() != 1;
   } ], [ "%B", function(d) {
     return d.getUTCMonth();
   } ], [ "%Y", d3_true ] ]);
   d3_time_scaleUtcMethods.year = d3_time.year.utc;
   d3_time.scale.utc = function() {
     return d3_time_scale(d3.scale.linear(), d3_time_scaleUtcMethods, d3_time_scaleUtcFormat);
   };
   d3.text = d3_xhrType(function(request) {
     return request.responseText;
   });
   d3.json = function(url, callback) {
     return d3_xhr(url, "application/json", d3_json, callback);
   };
   function d3_json(request) {
     return JSON.parse(request.responseText);
   }
   d3.html = function(url, callback) {
     return d3_xhr(url, "text/html", d3_html, callback);
   };
   function d3_html(request) {
     var range = d3_document.createRange();
     range.selectNode(d3_document.body);
     return range.createContextualFragment(request.responseText);
   }
   d3.xml = d3_xhrType(function(request) {
     return request.responseXML;
   });
   if (typeof define === "function" && define.amd) {
     define(d3);
   } else if (typeof module === "object" && module.exports) {
     module.exports = d3;
   } else {
     this.d3 = d3;
   }
 }();