Elep

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>RollUp Visualizer</title>
    <style>
    :root {
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial,
    "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol",
    "Noto Color Emoji";
  --background-color: #f7eedf;
  --text-color: #333;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background-color: #2b2d42;
    --text-color: #edf2f4;
  }
}
html {
  box-sizing: border-box;
}

*,
*:before,
*:after {
  box-sizing: inherit;
}

html {
  background-color: var(--background-color);
  color: var(--text-color);
  font-family: var(--font-family);
}

body {
  padding: 0;
  margin: 0;
}

html,
body {
  height: 100%;
  width: 100%;
}

body {
  display: flex;
  flex-direction: column;
}

svg {
  vertical-align: middle;
  height: 100%;
}

main {
  position: relative;
  margin: 0 auto;
  flex: 1;
  height: 100%;
  padding: 20px;
}

.tooltip {
  position: absolute;
  z-index: 1070;
  display: block;
  border: solid;
  border-width: 2px;
  border-radius: 5px;
  margin: 0;
  padding: 5px;
  font-style: normal;
  font-weight: 400;
  line-height: 1.5;
  text-align: left;
  text-decoration: none;
  text-shadow: none;
  text-transform: none;
  letter-spacing: normal;
  word-break: normal;
  word-spacing: normal;
  word-wrap: break-word;
  white-space: normal;
  line-break: auto;
  font-size: 0.875rem;
  opacity: 0;
  background-color: var(--background-color);
  color: var(--text-color);
}
    </style>
    <style>
    
    </style>
  </head>
  <body>
    <main></main>
    <script>
    var drawChart = (function () {
  'use strict';

var xhtml = "http://www.w3.org/1999/xhtml";

var namespaces = {
    svg: "http://www.w3.org/2000/svg",
    xhtml: xhtml,
    xlink: "http://www.w3.org/1999/xlink",
    xml: "http://www.w3.org/XML/1998/namespace",
    xmlns: "http://www.w3.org/2000/xmlns/"
  };

function namespace(name) {
    var prefix = name += "", i = prefix.indexOf(":");
    if (i >= 0 && (prefix = name.slice(0, i)) !== "xmlns") name = name.slice(i + 1);
    return namespaces.hasOwnProperty(prefix) ? {space: namespaces[prefix], local: name} : name; // eslint-disable-line no-prototype-builtins
  }

function creatorInherit(name) {
    return function() {
      var document = this.ownerDocument,
          uri = this.namespaceURI;
      return uri === xhtml && document.documentElement.namespaceURI === xhtml
          ? document.createElement(name)
          : document.createElementNS(uri, name);
    };
  }

function creatorFixed(fullname) {
    return function() {
      return this.ownerDocument.createElementNS(fullname.space, fullname.local);
    };
  }

function creator(name) {
    var fullname = namespace(name);
    return (fullname.local
        ? creatorFixed
        : creatorInherit)(fullname);
  }

function none() {}

function selector(selector) {
    return selector == null ? none : function() {
      return this.querySelector(selector);
    };
  }

function selection_select(select) {
    if (typeof select !== "function") select = selector(select);

for (var groups = this._groups, m = groups.length, subgroups = new Array(m), j = 0; j < m; ++j) {
      for (var group = groups[j], n = group.length, subgroup = subgroups[j] = new Array(n), node, subnode, i = 0; i < n; ++i) {
        if ((node = group[i]) && (subnode = select.call(node, node.__data__, i, group))) {
          if ("__data__" in node) subnode.__data__ = node.__data__;
          subgroup[i] = subnode;
        }
      }
    }

return new Selection(subgroups, this._parents);
  }

function array(x) {
    return typeof x === "object" && "length" in x
      ? x // Array, TypedArray, NodeList, array-like
      : Array.from(x); // Map, Set, iterable, string, or anything else
  }

function empty() {
    return [];
  }

function selectorAll(selector) {
    return selector == null ? empty : function() {
      return this.querySelectorAll(selector);
    };
  }

function arrayAll(select) {
    return function() {
      var group = select.apply(this, arguments);
      return group == null ? [] : array(group);
    };
  }

function selection_selectAll(select) {
    if (typeof select === "function") select = arrayAll(select);
    else select = selectorAll(select);

for (var groups = this._groups, m = groups.length, subgroups = [], parents = [], j = 0; j < m; ++j) {
      for (var group = groups[j], n = group.length, node, i = 0; i < n; ++i) {
        if (node = group[i]) {
          subgroups.push(select.call(node, node.__data__, i, group));
          parents.push(node);
        }
      }
    }

return new Selection(subgroups, parents);
  }

function matcher(selector) {
    return function() {
      return this.matches(selector);
    };
  }

function selection_filter(match) {
    if (typeof match !== "function") match = matcher(match);

for (var groups = this._groups, m = groups.length, subgroups = new Array(m), j = 0; j < m; ++j) {
      for (var group = groups[j], n = group.length, subgroup = subgroups[j] = [], node, i = 0; i < n; ++i) {
        if ((node = group[i]) && match.call(node, node.__data__, i, group)) {
          subgroup.push(node);
        }
      }
    }

return new Selection(subgroups, this._parents);
  }

function sparse(update) {
    return new Array(update.length);
  }

function selection_enter() {
    return new Selection(this._enter || this._groups.map(sparse), this._parents);
  }

function EnterNode(parent, datum) {
    this.ownerDocument = parent.ownerDocument;
    this.namespaceURI = parent.namespaceURI;
    this._next = null;
    this._parent = parent;
    this.__data__ = datum;
  }

EnterNode.prototype = {
    constructor: EnterNode,
    appendChild: function(child) { return this._parent.insertBefore(child, this._next); },
    insertBefore: function(child, next) { return this._parent.insertBefore(child, next); },
    querySelector: function(selector) { return this._parent.querySelector(selector); },
    querySelectorAll: function(selector) { return this._parent.querySelectorAll(selector); }
  };

function constant(x) {
    return function() {
      return x;
    };
  }

function bindIndex(parent, group, enter, update, exit, data) {
    var i = 0,
        node,
        groupLength = group.length,
        dataLength = data.length;

// Put any non-null nodes that fit into update.
    // Put any null nodes into enter.
    // Put any remaining data into enter.
    for (; i < dataLength; ++i) {
      if (node = group[i]) {
        node.__data__ = data[i];
        update[i] = node;
      } else {
        enter[i] = new EnterNode(parent, data[i]);
      }
    }

// Put any non-null nodes that don’t fit into exit.
    for (; i < groupLength; ++i) {
      if (node = group[i]) {
        exit[i] = node;
      }
    }
  }

function bindKey(parent, group, enter, update, exit, data, key) {
    var i,
        node,
        nodeByKeyValue = new Map,
        groupLength = group.length,
        dataLength = data.length,
        keyValues = new Array(groupLength),
        keyValue;

// Compute the key for each node.
    // If multiple nodes have the same key, the duplicates are added to exit.
    for (i = 0; i < groupLength; ++i) {
      if (node = group[i]) {
        keyValues[i] = keyValue = key.call(node, node.__data__, i, group) + "";
        if (nodeByKeyValue.has(keyValue)) {
          exit[i] = node;
        } else {
          nodeByKeyValue.set(keyValue, node);
        }
      }
    }

// Compute the key for each datum.
    // If there a node associated with this key, join and add it to update.
    // If there is not (or the key is a duplicate), add it to enter.
    for (i = 0; i < dataLength; ++i) {
      keyValue = key.call(parent, data[i], i, data) + "";
      if (node = nodeByKeyValue.get(keyValue)) {
        update[i] = node;
        node.__data__ = data[i];
        nodeByKeyValue.delete(keyValue);
      } else {
        enter[i] = new EnterNode(parent, data[i]);
      }
    }

// Add any remaining nodes that were not bound to data to exit.
    for (i = 0; i < groupLength; ++i) {
      if ((node = group[i]) && (nodeByKeyValue.get(keyValues[i]) === node)) {
        exit[i] = node;
      }
    }
  }

function datum(node) {
    return node.__data__;
  }

function selection_data(value, key) {
    if (!arguments.length) return Array.from(this, datum);

var bind = key ? bindKey : bindIndex,
        parents = this._parents,
        groups = this._groups;

if (typeof value !== "function") value = constant(value);

for (var m = groups.length, update = new Array(m), enter = new Array(m), exit = new Array(m), j = 0; j < m; ++j) {
      var parent = parents[j],
          group = groups[j],
          groupLength = group.length,
          data = array(value.call(parent, parent && parent.__data__, j, parents)),
          dataLength = data.length,
          enterGroup = enter[j] = new Array(dataLength),
          updateGroup = update[j] = new Array(dataLength),
          exitGroup = exit[j] = new Array(groupLength);

bind(parent, group, enterGroup, updateGroup, exitGroup, data, key);

// Now connect the enter nodes to their following update node, such that
      // appendChild can insert the materialized enter node before this node,
      // rather than at the end of the parent node.
      for (var i0 = 0, i1 = 0, previous, next; i0 < dataLength; ++i0) {
        if (previous = enterGroup[i0]) {
          if (i0 >= i1) i1 = i0 + 1;
          while (!(next = updateGroup[i1]) && ++i1 < dataLength);
          previous._next = next || null;
        }
      }
    }

update = new Selection(update, parents);
    update._enter = enter;
    update._exit = exit;
    return update;
  }

function selection_exit() {
    return new Selection(this._exit || this._groups.map(sparse), this._parents);
  }

function selection_join(onenter, onupdate, onexit) {
    var enter = this.enter(), update = this, exit = this.exit();
    enter = typeof onenter === "function" ? onenter(enter) : enter.append(onenter + "");
    if (onupdate != null) update = onupdate(update);
    if (onexit == null) exit.remove(); else onexit(exit);
    return enter && update ? enter.merge(update).order() : update;
  }

function selection_merge(selection) {
    if (!(selection instanceof Selection)) throw new Error("invalid merge");

for (var groups0 = this._groups, groups1 = selection._groups, m0 = groups0.length, m1 = groups1.length, m = Math.min(m0, m1), merges = new Array(m0), j = 0; j < m; ++j) {
      for (var group0 = groups0[j], group1 = groups1[j], n = group0.length, merge = merges[j] = new Array(n), node, i = 0; i < n; ++i) {
        if (node = group0[i] || group1[i]) {
          merge[i] = node;
        }
      }
    }

for (; j < m0; ++j) {
      merges[j] = groups0[j];
    }

return new Selection(merges, this._parents);
  }

function selection_order() {

for (var groups = this._groups, j = -1, m = groups.length; ++j < m;) {
      for (var group = groups[j], i = group.length - 1, next = group[i], node; --i >= 0;) {
        if (node = group[i]) {
          if (next && node.compareDocumentPosition(next) ^ 4) next.parentNode.insertBefore(node, next);
          next = node;
        }
      }
    }

return this;
  }

function selection_sort(compare) {
    if (!compare) compare = ascending;

function compareNode(a, b) {
      return a && b ? compare(a.__data__, b.__data__) : !a - !b;
    }

for (var groups = this._groups, m = groups.length, sortgroups = new Array(m), j = 0; j < m; ++j) {
      for (var group = groups[j], n = group.length, sortgroup = sortgroups[j] = new Array(n), node, i = 0; i < n; ++i) {
        if (node = group[i]) {
          sortgroup[i] = node;
        }
      }
      sortgroup.sort(compareNode);
    }

return new Selection(sortgroups, this._parents).order();
  }

function ascending(a, b) {
    return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
  }

function selection_call() {
    var callback = arguments[0];
    arguments[0] = this;
    callback.apply(null, arguments);
    return this;
  }

function selection_nodes() {
    return Array.from(this);
  }

function selection_node() {

for (var groups = this._groups, j = 0, m = groups.length; j < m; ++j) {
      for (var group = groups[j], i = 0, n = group.length; i < n; ++i) {
        var node = group[i];
        if (node) return node;
      }
    }

return null;
  }

function selection_size() {
    let size = 0;
    for (const node of this) ++size; // eslint-disable-line no-unused-vars
    return size;
  }

function selection_empty() {
    return !this.node();
  }

function selection_each(callback) {

for (var groups = this._groups, 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.call(node, node.__data__, i, group);
      }
    }

return this;
  }

function attrRemove(name) {
    return function() {
      this.removeAttribute(name);
    };
  }

function attrRemoveNS(fullname) {
    return function() {
      this.removeAttributeNS(fullname.space, fullname.local);
    };
  }

function attrConstant(name, value) {
    return function() {
      this.setAttribute(name, value);
    };
  }

function attrConstantNS(fullname, value) {
    return function() {
      this.setAttributeNS(fullname.space, fullname.local, value);
    };
  }

function attrFunction(name, value) {
    return function() {
      var v = value.apply(this, arguments);
      if (v == null) this.removeAttribute(name);
      else this.setAttribute(name, v);
    };
  }

function attrFunctionNS(fullname, value) {
    return function() {
      var v = value.apply(this, arguments);
      if (v == null) this.removeAttributeNS(fullname.space, fullname.local);
      else this.setAttributeNS(fullname.space, fullname.local, v);
    };
  }

function selection_attr(name, value) {
    var fullname = namespace(name);

if (arguments.length < 2) {
      var node = this.node();
      return fullname.local
          ? node.getAttributeNS(fullname.space, fullname.local)
          : node.getAttribute(fullname);
    }

return this.each((value == null
        ? (fullname.local ? attrRemoveNS : attrRemove) : (typeof value === "function"
        ? (fullname.local ? attrFunctionNS : attrFunction)
        : (fullname.local ? attrConstantNS : attrConstant)))(fullname, value));
  }

function defaultView(node) {
    return (node.ownerDocument && node.ownerDocument.defaultView) // node is a Node
        || (node.document && node) // node is a Window
        || node.defaultView; // node is a Document
  }

function styleRemove(name) {
    return function() {
      this.style.removeProperty(name);
    };
  }

function styleConstant(name, value, priority) {
    return function() {
      this.style.setProperty(name, value, priority);
    };
  }

function styleFunction(name, value, priority) {
    return function() {
      var v = value.apply(this, arguments);
      if (v == null) this.style.removeProperty(name);
      else this.style.setProperty(name, v, priority);
    };
  }

function selection_style(name, value, priority) {
    return arguments.length > 1
        ? this.each((value == null
              ? styleRemove : typeof value === "function"
              ? styleFunction
              : styleConstant)(name, value, priority == null ? "" : priority))
        : styleValue(this.node(), name);
  }

function styleValue(node, name) {
    return node.style.getPropertyValue(name)
        || defaultView(node).getComputedStyle(node, null).getPropertyValue(name);
  }

function propertyRemove(name) {
    return function() {
      delete this[name];
    };
  }

function propertyConstant(name, value) {
    return function() {
      this[name] = value;
    };
  }

function propertyFunction(name, value) {
    return function() {
      var v = value.apply(this, arguments);
      if (v == null) delete this[name];
      else this[name] = v;
    };
  }

function selection_property(name, value) {
    return arguments.length > 1
        ? this.each((value == null
            ? propertyRemove : typeof value === "function"
            ? propertyFunction
            : propertyConstant)(name, value))
        : this.node()[name];
  }

function classArray(string) {
    return string.trim().split(/^|\s+/);
  }

function classList(node) {
    return node.classList || new ClassList(node);
  }

function ClassList(node) {
    this._node = node;
    this._names = classArray(node.getAttribute("class") || "");
  }

ClassList.prototype = {
    add: function(name) {
      var i = this._names.indexOf(name);
      if (i < 0) {
        this._names.push(name);
        this._node.setAttribute("class", this._names.join(" "));
      }
    },
    remove: function(name) {
      var i = this._names.indexOf(name);
      if (i >= 0) {
        this._names.splice(i, 1);
        this._node.setAttribute("class", this._names.join(" "));
      }
    },
    contains: function(name) {
      return this._names.indexOf(name) >= 0;
    }
  };

function classedAdd(node, names) {
    var list = classList(node), i = -1, n = names.length;
    while (++i < n) list.add(names[i]);
  }

function classedRemove(node, names) {
    var list = classList(node), i = -1, n = names.length;
    while (++i < n) list.remove(names[i]);
  }

function classedTrue(names) {
    return function() {
      classedAdd(this, names);
    };
  }

function classedFalse(names) {
    return function() {
      classedRemove(this, names);
    };
  }

function classedFunction(names, value) {
    return function() {
      (value.apply(this, arguments) ? classedAdd : classedRemove)(this, names);
    };
  }

function selection_classed(name, value) {
    var names = classArray(name + "");

if (arguments.length < 2) {
      var list = classList(this.node()), i = -1, n = names.length;
      while (++i < n) if (!list.contains(names[i])) return false;
      return true;
    }

return this.each((typeof value === "function"
        ? classedFunction : value
        ? classedTrue
        : classedFalse)(names, value));
  }

function textRemove() {
    this.textContent = "";
  }

function textConstant(value) {
    return function() {
      this.textContent = value;
    };
  }

function textFunction(value) {
    return function() {
      var v = value.apply(this, arguments);
      this.textContent = v == null ? "" : v;
    };
  }

function selection_text(value) {
    return arguments.length
        ? this.each(value == null
            ? textRemove : (typeof value === "function"
            ? textFunction
            : textConstant)(value))
        : this.node().textContent;
  }

function htmlRemove() {
    this.innerHTML = "";
  }

function htmlConstant(value) {
    return function() {
      this.innerHTML = value;
    };
  }

function htmlFunction(value) {
    return function() {
      var v = value.apply(this, arguments);
      this.innerHTML = v == null ? "" : v;
    };
  }

function selection_html(value) {
    return arguments.length
        ? this.each(value == null
            ? htmlRemove : (typeof value === "function"
            ? htmlFunction
            : htmlConstant)(value))
        : this.node().innerHTML;
  }

function raise() {
    if (this.nextSibling) this.parentNode.appendChild(this);
  }

function selection_raise() {
    return this.each(raise);
  }

function lower() {
    if (this.previousSibling) this.parentNode.insertBefore(this, this.parentNode.firstChild);
  }

function selection_lower() {
    return this.each(lower);
  }

function selection_append(name) {
    var create = typeof name === "function" ? name : creator(name);
    return this.select(function() {
      return this.appendChild(create.apply(this, arguments));
    });
  }

function constantNull() {
    return null;
  }

function selection_insert(name, before) {
    var create = typeof name === "function" ? name : creator(name),
        select = before == null ? constantNull : typeof before === "function" ? before : selector(before);
    return this.select(function() {
      return this.insertBefore(create.apply(this, arguments), select.apply(this, arguments) || null);
    });
  }

function remove() {
    var parent = this.parentNode;
    if (parent) parent.removeChild(this);
  }

function selection_remove() {
    return this.each(remove);
  }

function selection_cloneShallow() {
    var clone = this.cloneNode(false), parent = this.parentNode;
    return parent ? parent.insertBefore(clone, this.nextSibling) : clone;
  }

function selection_cloneDeep() {
    var clone = this.cloneNode(true), parent = this.parentNode;
    return parent ? parent.insertBefore(clone, this.nextSibling) : clone;
  }

function selection_clone(deep) {
    return this.select(deep ? selection_cloneDeep : selection_cloneShallow);
  }

function selection_datum(value) {
    return arguments.length
        ? this.property("__data__", value)
        : this.node().__data__;
  }

function contextListener(listener) {
    return function(event) {
      listener.call(this, event, this.__data__);
    };
  }

function selection_on(typename, value, options) {
    var typenames = parseTypenames(typename + ""), i, n = typenames.length, t;

if (arguments.length < 2) {
      var on = this.node().__on;
      if (on) for (var j = 0, m = on.length, o; j < m; ++j) {
        for (i = 0, o = on[j]; i < n; ++i) {
          if ((t = typenames[i]).type === o.type && t.name === o.name) {
            return o.value;
          }
        }
      }
      return;
    }

on = value ? onAdd : onRemove;
    for (i = 0; i < n; ++i) this.each(on(typenames[i], value, options));
    return this;
  }

function dispatchEvent(node, type, params) {
    var window = defaultView(node),
        event = window.CustomEvent;

if (typeof event === "function") {
      event = new event(type, params);
    } else {
      event = window.document.createEvent("Event");
      if (params) event.initEvent(type, params.bubbles, params.cancelable), event.detail = params.detail;
      else event.initEvent(type, false, false);
    }

node.dispatchEvent(event);
  }

function dispatchConstant(type, params) {
    return function() {
      return dispatchEvent(this, type, params);
    };
  }

function dispatchFunction(type, params) {
    return function() {
      return dispatchEvent(this, type, params.apply(this, arguments));
    };
  }

function selection_dispatch(type, params) {
    return this.each((typeof params === "function"
        ? dispatchFunction
        : dispatchConstant)(type, params));
  }

function* selection_iterator() {
    for (var groups = this._groups, 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]) yield node;
      }
    }
  }

var root = [null];

function Selection(groups, parents) {
    this._groups = groups;
    this._parents = parents;
  }

function selection() {
    return new Selection([[document.documentElement]], root);
  }

Selection.prototype = selection.prototype = {
    constructor: Selection,
    select: selection_select,
    selectAll: selection_selectAll,
    filter: selection_filter,
    data: selection_data,
    enter: selection_enter,
    exit: selection_exit,
    join: selection_join,
    merge: selection_merge,
    order: selection_order,
    sort: selection_sort,
    call: selection_call,
    nodes: selection_nodes,
    node: selection_node,
    size: selection_size,
    empty: selection_empty,
    each: selection_each,
    attr: selection_attr,
    style: selection_style,
    property: selection_property,
    classed: selection_classed,
    text: selection_text,
    html: selection_html,
    raise: selection_raise,
    lower: selection_lower,
    append: selection_append,
    insert: selection_insert,
    remove: selection_remove,
    clone: selection_clone,
    datum: selection_datum,
    on: selection_on,
    dispatch: selection_dispatch,
    [Symbol.iterator]: selection_iterator
  };

function select(selector) {
    return typeof selector === "string"
        ? new Selection([[document.querySelector(selector)]], [document.documentElement])
        : new Selection([[selector]], root);
  }

function ascending$1(a, b) {
    return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
  }

function ascendingComparator(f) {
    return function(d, x) {
      return ascending$1(f(d), x);
    };
  }

var ascendingBisect = bisector(ascending$1);
  var bisectRight = ascendingBisect.right;

function identity(x) {
    return x;
  }

function group(values, ...keys) {
    return nest(values, identity, identity, keys);
  }

var e10 = Math.sqrt(50),
      e5 = Math.sqrt(10),
      e2 = Math.sqrt(2);

function ticks(start, stop, count) {
    var reverse,
        i = -1,
        n,
        ticks,
        step;

stop = +stop, start = +start, count = +count;
    if (start === stop && count > 0) return [start];
    if (reverse = stop < start) n = start, start = stop, stop = n;
    if ((step = tickIncrement(start, stop, count)) === 0 || !isFinite(step)) return [];

if (step > 0) {
      start = Math.ceil(start / step);
      stop = Math.floor(stop / step);
      ticks = new Array(n = Math.ceil(stop - start + 1));
      while (++i < n) ticks[i] = (start + i) * step;
    } else {
      start = Math.floor(start * step);
      stop = Math.ceil(stop * step);
      ticks = new Array(n = Math.ceil(start - stop + 1));
      while (++i < n) ticks[i] = (start - i) / step;
    }

if (reverse) ticks.reverse();

return ticks;
  }

function tickIncrement(start, stop, count) {
    var step = (stop - start) / Math.max(0, count),
        power = Math.floor(Math.log(step) / Math.LN10),
        error = step / Math.pow(10, power);
    return power >= 0
        ? (error >= e10 ? 10 : error >= e5 ? 5 : error >= e2 ? 2 : 1) * Math.pow(10, power)
        : -Math.pow(10, -power) / (error >= e10 ? 10 : error >= e5 ? 5 : error >= e2 ? 2 : 1);
  }

function tickStep(start, stop, count) {
    var step0 = Math.abs(stop - start) / Math.max(0, count),
        step1 = Math.pow(10, Math.floor(Math.log(step0) / Math.LN10)),
        error = step0 / step1;
    if (error >= e10) step1 *= 10;
    else if (error >= e5) step1 *= 5;
    else if (error >= e2) step1 *= 2;
    return stop < start ? -step1 : step1;
  }

function count(node) {
    var sum = 0,
        children = node.children,
        i = children && children.length;
    if (!i) sum = 1;
    else while (--i >= 0) sum += children[i].value;
    node.value = sum;
  }

function node_count() {
    return this.eachAfter(count);
  }

function node_sum(value) {
    return this.eachAfter(function(node) {
      var sum = +value(node.data) || 0,
          children = node.children,
          i = children && children.length;
      while (--i >= 0) sum += children[i].value;
      node.value = sum;
    });
  }

function node_sort(compare) {
    return this.eachBefore(function(node) {
      if (node.children) {
        node.children.sort(compare);
      }
    });
  }

function leastCommonAncestor(a, b) {
    if (a === b) return a;
    var aNodes = a.ancestors(),
        bNodes = b.ancestors(),
        c = null;
    a = aNodes.pop();
    b = bNodes.pop();
    while (a === b) {
      c = a;
      a = aNodes.pop();
      b = bNodes.pop();
    }
    return c;
  }

function node_ancestors() {
    var node = this, nodes = [node];
    while (node = node.parent) {
      nodes.push(node);
    }
    return nodes;
  }

function node_descendants() {
    var nodes = [];
    this.each(function(node) {
      nodes.push(node);
    });
    return nodes;
  }

function node_leaves() {
    var leaves = [];
    this.eachBefore(function(node) {
      if (!node.children) {
        leaves.push(node);
      }
    });
    return leaves;
  }

function hierarchy(data, children) {
    var root = new Node(data),
        valued = +data.value && (root.value = data.value),
        node,
        nodes = [root],
        child,
        childs,
        i,
        n;

if (children == null) children = defaultChildren;

while (node = nodes.pop()) {
      if (valued) node.value = +node.data.value;
      if ((childs = children(node.data)) && (n = childs.length)) {
        node.children = new Array(n);
        for (i = n - 1; i >= 0; --i) {
          nodes.push(child = node.children[i] = new Node(childs[i]));
          child.parent = node;
          child.depth = node.depth + 1;
        }
      }
    }

return root.eachBefore(computeHeight);
  }

function node_copy() {
    return hierarchy(this).eachBefore(copyData);
  }

function defaultChildren(d) {
    return d.children;
  }

function copyData(node) {
    node.data = node.data.data;
  }

function computeHeight(node) {
    var height = 0;
    do node.height = height;
    while ((node = node.parent) && (node.height < ++height));
  }

function Node(data) {
    this.data = data;
    this.depth =
    this.height = 0;
    this.parent = null;
  }

Node.prototype = hierarchy.prototype = {
    constructor: Node,
    count: node_count,
    each: node_each,
    eachAfter: node_eachAfter,
    eachBefore: node_eachBefore,
    sum: node_sum,
    sort: node_sort,
    path: node_path,
    ancestors: node_ancestors,
    descendants: node_descendants,
    leaves: node_leaves,
    links: node_links,
    copy: node_copy
  };

function required(f) {
    if (typeof f !== "function") throw new Error;
    return f;
  }

function constantZero() {
    return 0;
  }

function constant$1(x) {
    return function() {
      return x;
    };
  }

function roundNode(node) {
    node.x0 = Math.round(node.x0);
    node.y0 = Math.round(node.y0);
    node.x1 = Math.round(node.x1);
    node.y1 = Math.round(node.y1);
  }

function treemapDice(parent, x0, y0, x1, y1) {
    var nodes = parent.children,
        node,
        i = -1,
        n = nodes.length,
        k = parent.value && (x1 - x0) / parent.value;

while (++i < n) {
      node = nodes[i], node.y0 = y0, node.y1 = y1;
      node.x0 = x0, node.x1 = x0 += node.value * k;
    }
  }

function treemapSlice(parent, x0, y0, x1, y1) {
    var nodes = parent.children,
        node,
        i = -1,
        n = nodes.length,
        k = parent.value && (y1 - y0) / parent.value;

while (++i < n) {
      node = nodes[i], node.x0 = x0, node.x1 = x1;
      node.y0 = y0, node.y1 = y0 += node.value * k;
    }
  }

var phi = (1 + Math.sqrt(5)) / 2;

function squarifyRatio(ratio, parent, x0, y0, x1, y1) {
    var rows = [],
        nodes = parent.children,
        row,
        nodeValue,
        i0 = 0,
        i1 = 0,
        n = nodes.length,
        dx, dy,
        value = parent.value,
        sumValue,
        minValue,
        maxValue,
        newRatio,
        minRatio,
        alpha,
        beta;

while (i0 < n) {
      dx = x1 - x0, dy = y1 - y0;

// Find the next non-empty node.
      do sumValue = nodes[i1++].value; while (!sumValue && i1 < n);
      minValue = maxValue = sumValue;
      alpha = Math.max(dy / dx, dx / dy) / (value * ratio);
      beta = sumValue * sumValue * alpha;
      minRatio = Math.max(maxValue / beta, beta / minValue);

// Keep adding nodes while the aspect ratio maintains or improves.
      for (; i1 < n; ++i1) {
        sumValue += nodeValue = nodes[i1].value;
        if (nodeValue < minValue) minValue = nodeValue;
        if (nodeValue > maxValue) maxValue = nodeValue;
        beta = sumValue * sumValue * alpha;
        newRatio = Math.max(maxValue / beta, beta / minValue);
        if (newRatio > minRatio) { sumValue -= nodeValue; break; }
        minRatio = newRatio;
      }

// Position and record the row orientation.
      rows.push(row = {value: sumValue, dice: dx < dy, children: nodes.slice(i0, i1)});
      if (row.dice) treemapDice(row, x0, y0, x1, value ? y0 += dy * sumValue / value : y1);
      else treemapSlice(row, x0, y0, value ? x0 += dx * sumValue / value : x1, y1);
      value -= sumValue, i0 = i1;
    }

return rows;
  }

var squarify = (function custom(ratio) {

function squarify(parent, x0, y0, x1, y1) {
      squarifyRatio(ratio, parent, x0, y0, x1, y1);
    }

squarify.ratio = function(x) {
      return custom((x = +x) > 1 ? x : 1);
    };

return squarify;
  })(phi);

function d3treemap() {
    var tile = squarify,
        round = false,
        dx = 1,
        dy = 1,
        paddingStack = [0],
        paddingInner = constantZero,
        paddingTop = constantZero,
        paddingRight = constantZero,
        paddingBottom = constantZero,
        paddingLeft = constantZero;

function treemap(root) {
      root.x0 =
      root.y0 = 0;
      root.x1 = dx;
      root.y1 = dy;
      root.eachBefore(positionNode);
      paddingStack = [0];
      if (round) root.eachBefore(roundNode);
      return root;
    }

function positionNode(node) {
      var p = paddingStack[node.depth],
          x0 = node.x0 + p,
          y0 = node.y0 + p,
          x1 = node.x1 - p,
          y1 = node.y1 - p;
      if (x1 < x0) x0 = x1 = (x0 + x1) / 2;
      if (y1 < y0) y0 = y1 = (y0 + y1) / 2;
      node.x0 = x0;
      node.y0 = y0;
      node.x1 = x1;
      node.y1 = y1;
      if (node.children) {
        p = paddingStack[node.depth + 1] = paddingInner(node) / 2;
        x0 += paddingLeft(node) - p;
        y0 += paddingTop(node) - p;
        x1 -= paddingRight(node) - p;
        y1 -= paddingBottom(node) - p;
        if (x1 < x0) x0 = x1 = (x0 + x1) / 2;
        if (y1 < y0) y0 = y1 = (y0 + y1) / 2;
        tile(node, x0, y0, x1, y1);
      }
    }

treemap.round = function(x) {
      return arguments.length ? (round = !!x, treemap) : round;
    };

treemap.size = function(x) {
      return arguments.length ? (dx = +x[0], dy = +x[1], treemap) : [dx, dy];
    };

treemap.tile = function(x) {
      return arguments.length ? (tile = required(x), treemap) : tile;
    };

treemap.padding = function(x) {
      return arguments.length ? treemap.paddingInner(x).paddingOuter(x) : treemap.paddingInner();
    };

treemap.paddingInner = function(x) {
      return arguments.length ? (paddingInner = typeof x === "function" ? x : constant$1(+x), treemap) : paddingInner;
    };

treemap.paddingOuter = function(x) {
      return arguments.length ? treemap.paddingTop(x).paddingRight(x).paddingBottom(x).paddingLeft(x) : treemap.paddingTop();
    };

treemap.paddingTop = function(x) {
      return arguments.length ? (paddingTop = typeof x === "function" ? x : constant$1(+x), treemap) : paddingTop;
    };

treemap.paddingRight = function(x) {
      return arguments.length ? (paddingRight = typeof x === "function" ? x : constant$1(+x), treemap) : paddingRight;
    };

treemap.paddingBottom = function(x) {
      return arguments.length ? (paddingBottom = typeof x === "function" ? x : constant$1(+x), treemap) : paddingBottom;
    };

treemap.paddingLeft = function(x) {
      return arguments.length ? (paddingLeft = typeof x === "function" ? x : constant$1(+x), treemap) : paddingLeft;
    };

return treemap;
  }

var treemapResquarify = (function custom(ratio) {

function resquarify(parent, x0, y0, x1, y1) {
      if ((rows = parent._squarify) && (rows.ratio === ratio)) {
        var rows,
            row,
            nodes,
            i,
            j = -1,
            n,
            m = rows.length,
            value = parent.value;

while (++j < m) {
          row = rows[j], nodes = row.children;
          for (i = row.value = 0, n = nodes.length; i < n; ++i) row.value += nodes[i].value;
          if (row.dice) treemapDice(row, x0, y0, x1, y0 += (y1 - y0) * row.value / value);
          else treemapSlice(row, x0, y0, x0 += (x1 - x0) * row.value / value, y1);
          value -= row.value;
        }
      } else {
        parent._squarify = rows = squarifyRatio(ratio, parent, x0, y0, x1, y1);
        rows.ratio = ratio;
      }
    }

resquarify.ratio = function(x) {
      return custom((x = +x) > 1 ? x : 1);
    };

return resquarify;
  })(phi);

/*!
   * bytes
   * Copyright(c) 2012-2014 TJ Holowaychuk
   * Copyright(c) 2015 Jed Watson
   * MIT Licensed
   */
  var format_1 = format;

/**
   * Module variables.
   * @private
   */

var formatThousandsRegExp = /\B(?=(\d{3})+(?!\d))/g;

var formatDecimalsRegExp = /(?:\.0*|(\.[^0]+)0+)$/;

var map = {
    b:  1,
    kb: 1 << 10,
    mb: 1 << 20,
    gb: 1 << 30,
    tb: Math.pow(1024, 4),
    pb: Math.pow(1024, 5),
  };

/**
   * Format the given value in bytes into a string.
   *
   * If the value is negative, it is kept as such. If it is a float,
   * it is rounded.
   *
   * @param {number} value
   * @param {object} [options]
   * @param {number} [options.decimalPlaces=2]
   * @param {number} [options.fixedDecimals=false]
   * @param {string} [options.thousandsSeparator=]
   * @param {string} [options.unit=]
   * @param {string} [options.unitSeparator=]
   *
   * @returns {string|null}
   * @public
   */

function format(value, options) {
    if (!Number.isFinite(value)) {
      return null;
    }

var mag = Math.abs(value);
    var thousandsSeparator = (options && options.thousandsSeparator) || '';
    var unitSeparator = (options && options.unitSeparator) || '';
    var decimalPlaces = (options && options.decimalPlaces !== undefined) ? options.decimalPlaces : 2;
    var fixedDecimals = Boolean(options && options.fixedDecimals);
    var unit = (options && options.unit) || '';

if (!unit || !map[unit.toLowerCase()]) {
      if (mag >= map.pb) {
        unit = 'PB';
      } else if (mag >= map.tb) {
        unit = 'TB';
      } else if (mag >= map.gb) {
        unit = 'GB';
      } else if (mag >= map.mb) {
        unit = 'MB';
      } else if (mag >= map.kb) {
        unit = 'KB';
      } else {
        unit = 'B';
      }
    }

var val = value / map[unit.toLowerCase()];
    var str = val.toFixed(decimalPlaces);

if (!fixedDecimals) {
      str = str.replace(formatDecimalsRegExp, '$1');
    }

if (thousandsSeparator) {
      str = str.replace(formatThousandsRegExp, thousandsSeparator);
    }

return str + unitSeparator + unit;
  }

let count$1 = 0;

class Id {
    constructor(id) {
      this._id = id;
      this._href = createUrl({ hash: id }).href;
    }

get id() {
      return this._id;
    }

get href() {
      return this._href;
    }

toString() {
      return `url(${this.href})`;
    }
  }

function uid(name) {
    count$1 += 1;
    const id = ["O", name, count$1].filter(Boolean).join("-");
    return new Id(id);
  }

function createUrl(options = {}) {
    const url = new URL(window.location);
    return Object.assign(url, options);
  }

function initRange(domain, range) {
    switch (arguments.length) {
      case 0: break;
      case 1: this.range(domain); break;
      default: this.range(range).domain(domain); break;
    }
    return this;
  }

function define(constructor, factory, prototype) {
    constructor.prototype = factory.prototype = prototype;
    prototype.constructor = constructor;
  }

function extend(parent, definition) {
    var prototype = Object.create(parent.prototype);
    for (var key in definition) prototype[key] = definition[key];
    return prototype;
  }

function Color() {}

var darker = 0.7;
  var brighter = 1 / darker;

var reI = "\\s*([+-]?\\d+)\\s*",
      reN = "\\s*([+-]?\\d*\\.?\\d+(?:[eE][+-]?\\d+)?)\\s*",
      reP = "\\s*([+-]?\\d*\\.?\\d+(?:[eE][+-]?\\d+)?)%\\s*",
      reHex = /^#([0-9a-f]{3,8})$/,
      reRgbInteger = new RegExp("^rgb\$" + [reI, reI, reI] + "\$$"),
      reRgbPercent = new RegExp("^rgb\$" + [reP, reP, reP] + "\$$"),
      reRgbaInteger = new RegExp("^rgba\$" + [reI, reI, reI, reN] + "\$$"),
      reRgbaPercent = new RegExp("^rgba\$" + [reP, reP, reP, reN] + "\$$"),
      reHslPercent = new RegExp("^hsl\$" + [reN, reP, reP] + "\$$"),
      reHslaPercent = new RegExp("^hsla\$" + [reN, reP, reP, reN] + "\$$");

var named = {
    aliceblue: 0xf0f8ff,
    antiquewhite: 0xfaebd7,
    aqua: 0x00ffff,
    aquamarine: 0x7fffd4,
    azure: 0xf0ffff,
    beige: 0xf5f5dc,
    bisque: 0xffe4c4,
    black: 0x000000,
    blanchedalmond: 0xffebcd,
    blue: 0x0000ff,
    blueviolet: 0x8a2be2,
    brown: 0xa52a2a,
    burlywood: 0xdeb887,
    cadetblue: 0x5f9ea0,
    chartreuse: 0x7fff00,
    chocolate: 0xd2691e,
    coral: 0xff7f50,
    cornflowerblue: 0x6495ed,
    cornsilk: 0xfff8dc,
    crimson: 0xdc143c,
    cyan: 0x00ffff,
    darkblue: 0x00008b,
    darkcyan: 0x008b8b,
    darkgoldenrod: 0xb8860b,
    darkgray: 0xa9a9a9,
    darkgreen: 0x006400,
    darkgrey: 0xa9a9a9,
    darkkhaki: 0xbdb76b,
    darkmagenta: 0x8b008b,
    darkolivegreen: 0x556b2f,
    darkorange: 0xff8c00,
    darkorchid: 0x9932cc,
    darkred: 0x8b0000,
    darksalmon: 0xe9967a,
    darkseagreen: 0x8fbc8f,
    darkslateblue: 0x483d8b,
    darkslategray: 0x2f4f4f,
    darkslategrey: 0x2f4f4f,
    darkturquoise: 0x00ced1,
    darkviolet: 0x9400d3,
    deeppink: 0xff1493,
    deepskyblue: 0x00bfff,
    dimgray: 0x696969,
    dimgrey: 0x696969,
    dodgerblue: 0x1e90ff,
    firebrick: 0xb22222,
    floralwhite: 0xfffaf0,
    forestgreen: 0x228b22,
    fuchsia: 0xff00ff,
    gainsboro: 0xdcdcdc,
    ghostwhite: 0xf8f8ff,
    gold: 0xffd700,
    goldenrod: 0xdaa520,
    gray: 0x808080,
    green: 0x008000,
    greenyellow: 0xadff2f,
    grey: 0x808080,
    honeydew: 0xf0fff0,
    hotpink: 0xff69b4,
    indianred: 0xcd5c5c,
    indigo: 0x4b0082,
    ivory: 0xfffff0,
    khaki: 0xf0e68c,
    lavender: 0xe6e6fa,
    lavenderblush: 0xfff0f5,
    lawngreen: 0x7cfc00,
    lemonchiffon: 0xfffacd,
    lightblue: 0xadd8e6,
    lightcoral: 0xf08080,
    lightcyan: 0xe0ffff,
    lightgoldenrodyellow: 0xfafad2,
    lightgray: 0xd3d3d3,
    lightgreen: 0x90ee90,
    lightgrey: 0xd3d3d3,
    lightpink: 0xffb6c1,
    lightsalmon: 0xffa07a,
    lightseagreen: 0x20b2aa,
    lightskyblue: 0x87cefa,
    lightslategray: 0x778899,
    lightslategrey: 0x778899,
    lightsteelblue: 0xb0c4de,
    lightyellow: 0xffffe0,
    lime: 0x00ff00,
    limegreen: 0x32cd32,
    linen: 0xfaf0e6,
    magenta: 0xff00ff,
    maroon: 0x800000,
    mediumaquamarine: 0x66cdaa,
    mediumblue: 0x0000cd,
    mediumorchid: 0xba55d3,
    mediumpurple: 0x9370db,
    mediumseagreen: 0x3cb371,
    mediumslateblue: 0x7b68ee,
    mediumspringgreen: 0x00fa9a,
    mediumturquoise: 0x48d1cc,
    mediumvioletred: 0xc71585,
    midnightblue: 0x191970,
    mintcream: 0xf5fffa,
    mistyrose: 0xffe4e1,
    moccasin: 0xffe4b5,
    navajowhite: 0xffdead,
    navy: 0x000080,
    oldlace: 0xfdf5e6,
    olive: 0x808000,
    olivedrab: 0x6b8e23,
    orange: 0xffa500,
    orangered: 0xff4500,
    orchid: 0xda70d6,
    palegoldenrod: 0xeee8aa,
    palegreen: 0x98fb98,
    paleturquoise: 0xafeeee,
    palevioletred: 0xdb7093,
    papayawhip: 0xffefd5,
    peachpuff: 0xffdab9,
    peru: 0xcd853f,
    pink: 0xffc0cb,
    plum: 0xdda0dd,
    powderblue: 0xb0e0e6,
    purple: 0x800080,
    rebeccapurple: 0x663399,
    red: 0xff0000,
    rosybrown: 0xbc8f8f,
    royalblue: 0x4169e1,
    saddlebrown: 0x8b4513,
    salmon: 0xfa8072,
    sandybrown: 0xf4a460,
    seagreen: 0x2e8b57,
    seashell: 0xfff5ee,
    sienna: 0xa0522d,
    silver: 0xc0c0c0,
    skyblue: 0x87ceeb,
    slateblue: 0x6a5acd,
    slategray: 0x708090,
    slategrey: 0x708090,
    snow: 0xfffafa,
    springgreen: 0x00ff7f,
    steelblue: 0x4682b4,
    tan: 0xd2b48c,
    teal: 0x008080,
    thistle: 0xd8bfd8,
    tomato: 0xff6347,
    turquoise: 0x40e0d0,
    violet: 0xee82ee,
    wheat: 0xf5deb3,
    white: 0xffffff,
    whitesmoke: 0xf5f5f5,
    yellow: 0xffff00,
    yellowgreen: 0x9acd32
  };

define(Color, color, {
    copy: function(channels) {
      return Object.assign(new this.constructor, this, channels);
    },
    displayable: function() {
      return this.rgb().displayable();
    },
    hex: color_formatHex, // Deprecated! Use color.formatHex.
    formatHex: color_formatHex,
    formatHsl: color_formatHsl,
    formatRgb: color_formatRgb,
    toString: color_formatRgb
  });

function color_formatHex() {
    return this.rgb().formatHex();
  }

function color_formatHsl() {
    return hslConvert(this).formatHsl();
  }

function color_formatRgb() {
    return this.rgb().formatRgb();
  }

function color(format) {
    var m, l;
    format = (format + "").trim().toLowerCase();
    return (m = reHex.exec(format)) ? (l = m[1].length, m = parseInt(m[1], 16), l === 6 ? rgbn(m) // #ff0000
        : l === 3 ? new Rgb((m >> 8 & 0xf) | (m >> 4 & 0xf0), (m >> 4 & 0xf) | (m & 0xf0), ((m & 0xf) << 4) | (m & 0xf), 1) // #f00
        : l === 8 ? new Rgb(m >> 24 & 0xff, m >> 16 & 0xff, m >> 8 & 0xff, (m & 0xff) / 0xff) // #ff000000
        : l === 4 ? new Rgb((m >> 12 & 0xf) | (m >> 8 & 0xf0), (m >> 8 & 0xf) | (m >> 4 & 0xf0), (m >> 4 & 0xf) | (m & 0xf0), (((m & 0xf) << 4) | (m & 0xf)) / 0xff) // #f000
        : null) // invalid hex
        : (m = reRgbInteger.exec(format)) ? new Rgb(m[1], m[2], m[3], 1) // rgb(255, 0, 0)
        : (m = reRgbPercent.exec(format)) ? new Rgb(m[1] * 255 / 100, m[2] * 255 / 100, m[3] * 255 / 100, 1) // rgb(100%, 0%, 0%)
        : (m = reRgbaInteger.exec(format)) ? rgba(m[1], m[2], m[3], m[4]) // rgba(255, 0, 0, 1)
        : (m = reRgbaPercent.exec(format)) ? rgba(m[1] * 255 / 100, m[2] * 255 / 100, m[3] * 255 / 100, m[4]) // rgb(100%, 0%, 0%, 1)
        : (m = reHslPercent.exec(format)) ? hsla(m[1], m[2] / 100, m[3] / 100, 1) // hsl(120, 50%, 50%)
        : (m = reHslaPercent.exec(format)) ? hsla(m[1], m[2] / 100, m[3] / 100, m[4]) // hsla(120, 50%, 50%, 1)
        : named.hasOwnProperty(format) ? rgbn(named[format]) // eslint-disable-line no-prototype-builtins
        : format === "transparent" ? new Rgb(NaN, NaN, NaN, 0)
        : null;
  }

function rgbn(n) {
    return new Rgb(n >> 16 & 0xff, n >> 8 & 0xff, n & 0xff, 1);
  }

function rgba(r, g, b, a) {
    if (a <= 0) r = g = b = NaN;
    return new Rgb(r, g, b, a);
  }

function rgbConvert(o) {
    if (!(o instanceof Color)) o = color(o);
    if (!o) return new Rgb;
    o = o.rgb();
    return new Rgb(o.r, o.g, o.b, o.opacity);
  }

function rgb(r, g, b, opacity) {
    return arguments.length === 1 ? rgbConvert(r) : new Rgb(r, g, b, opacity == null ? 1 : opacity);
  }

function Rgb(r, g, b, opacity) {
    this.r = +r;
    this.g = +g;
    this.b = +b;
    this.opacity = +opacity;
  }

define(Rgb, rgb, extend(Color, {
    brighter: function(k) {
      k = k == null ? brighter : Math.pow(brighter, k);
      return new Rgb(this.r * k, this.g * k, this.b * k, this.opacity);
    },
    darker: function(k) {
      k = k == null ? darker : Math.pow(darker, k);
      return new Rgb(this.r * k, this.g * k, this.b * k, this.opacity);
    },
    rgb: function() {
      return this;
    },
    displayable: function() {
      return (-0.5 <= this.r && this.r < 255.5)
          && (-0.5 <= this.g && this.g < 255.5)
          && (-0.5 <= this.b && this.b < 255.5)
          && (0 <= this.opacity && this.opacity <= 1);
    },
    hex: rgb_formatHex, // Deprecated! Use color.formatHex.
    formatHex: rgb_formatHex,
    formatRgb: rgb_formatRgb,
    toString: rgb_formatRgb
  }));

function rgb_formatHex() {
    return "#" + hex(this.r) + hex(this.g) + hex(this.b);
  }

function rgb_formatRgb() {
    var a = this.opacity; a = isNaN(a) ? 1 : Math.max(0, Math.min(1, a));
    return (a === 1 ? "rgb(" : "rgba(")
        + Math.max(0, Math.min(255, Math.round(this.r) || 0)) + ", "
        + Math.max(0, Math.min(255, Math.round(this.g) || 0)) + ", "
        + Math.max(0, Math.min(255, Math.round(this.b) || 0))
        + (a === 1 ? ")" : ", " + a + ")");
  }

function hex(value) {
    value = Math.max(0, Math.min(255, Math.round(value) || 0));
    return (value < 16 ? "0" : "") + value.toString(16);
  }

function hsla(h, s, l, a) {
    if (a <= 0) h = s = l = NaN;
    else if (l <= 0 || l >= 1) h = s = NaN;
    else if (s <= 0) h = NaN;
    return new Hsl(h, s, l, a);
  }

function hsl(h, s, l, opacity) {
    return arguments.length === 1 ? hslConvert(h) : new Hsl(h, s, l, opacity == null ? 1 : opacity);
  }

function Hsl(h, s, l, opacity) {
    this.h = +h;
    this.s = +s;
    this.l = +l;
    this.opacity = +opacity;
  }

define(Hsl, hsl, extend(Color, {
    brighter: function(k) {
      k = k == null ? brighter : Math.pow(brighter, k);
      return new Hsl(this.h, this.s, this.l * k, this.opacity);
    },
    darker: function(k) {
      k = k == null ? darker : Math.pow(darker, k);
      return new Hsl(this.h, this.s, this.l * k, this.opacity);
    },
    rgb: function() {
      var h = this.h % 360 + (this.h < 0) * 360,
          s = isNaN(h) || isNaN(this.s) ? 0 : this.s,
          l = this.l,
          m2 = l + (l < 0.5 ? l : 1 - l) * s,
          m1 = 2 * l - m2;
      return new Rgb(
        hsl2rgb(h >= 240 ? h - 240 : h + 120, m1, m2),
        hsl2rgb(h, m1, m2),
        hsl2rgb(h < 120 ? h + 240 : h - 120, m1, m2),
        this.opacity
      );
    },
    displayable: function() {
      return (0 <= this.s && this.s <= 1 || isNaN(this.s))
          && (0 <= this.l && this.l <= 1)
          && (0 <= this.opacity && this.opacity <= 1);
    },
    formatHsl: function() {
      var a = this.opacity; a = isNaN(a) ? 1 : Math.max(0, Math.min(1, a));
      return (a === 1 ? "hsl(" : "hsla(")
          + (this.h || 0) + ", "
          + (this.s || 0) * 100 + "%, "
          + (this.l || 0) * 100 + "%"
          + (a === 1 ? ")" : ", " + a + ")");
    }
  }));

/* From FvD 13.37, CSS Color Module Level 3 */
  function hsl2rgb(h, m1, m2) {
    return (h < 60 ? m1 + (m2 - m1) * h / 60
        : h < 180 ? m2
        : h < 240 ? m1 + (m2 - m1) * (240 - h) / 60
        : m1) * 255;
  }

function basis(t1, v0, v1, v2, v3) {
    var t2 = t1 * t1, t3 = t2 * t1;
    return ((1 - 3 * t1 + 3 * t2 - t3) * v0
        + (4 - 6 * t2 + 3 * t3) * v1
        + (1 + 3 * t1 + 3 * t2 - 3 * t3) * v2
        + t3 * v3) / 6;
  }

function basis$1(values) {
    var n = values.length - 1;
    return function(t) {
      var i = t <= 0 ? (t = 0) : t >= 1 ? (t = 1, n - 1) : Math.floor(t * n),
          v1 = values[i],
          v2 = values[i + 1],
          v0 = i > 0 ? values[i - 1] : 2 * v1 - v2,
          v3 = i < n - 1 ? values[i + 2] : 2 * v2 - v1;
      return basis((t - i / n) * n, v0, v1, v2, v3);
    };
  }

function constant$2(x) {
    return function() {
      return x;
    };
  }

function linear(a, d) {
    return function(t) {
      return a + t * d;
    };
  }

function exponential(a, b, y) {
    return a = Math.pow(a, y), b = Math.pow(b, y) - a, y = 1 / y, function(t) {
      return Math.pow(a + t * b, y);
    };
  }

function gamma(y) {
    return (y = +y) === 1 ? nogamma : function(a, b) {
      return b - a ? exponential(a, b, y) : constant$2(isNaN(a) ? b : a);
    };
  }

function nogamma(a, b) {
    var d = b - a;
    return d ? linear(a, d) : constant$2(isNaN(a) ? b : a);
  }

var rgb$1 = (function rgbGamma(y) {
    var color = gamma(y);

function rgb$1(start, end) {
      var r = color((start = rgb(start)).r, (end = rgb(end)).r),
          g = color(start.g, end.g),
          b = color(start.b, end.b),
          opacity = nogamma(start.opacity, end.opacity);
      return function(t) {
        start.r = r(t);
        start.g = g(t);
        start.b = b(t);
        start.opacity = opacity(t);
        return start + "";
      };
    }

rgb$1.gamma = rgbGamma;

return rgb$1;
  })(1);

var rgbBasis = rgbSpline(basis$1);

function numberArray(a, b) {
    if (!b) b = [];
    var n = a ? Math.min(b.length, a.length) : 0,
        c = b.slice(),
        i;
    return function(t) {
      for (i = 0; i < n; ++i) c[i] = a[i] * (1 - t) + b[i] * t;
      return c;
    };
  }

function isNumberArray(x) {
    return ArrayBuffer.isView(x) && !(x instanceof DataView);
  }

function genericArray(a, b) {
    var nb = b ? b.length : 0,
        na = a ? Math.min(nb, a.length) : 0,
        x = new Array(na),
        c = new Array(nb),
        i;

for (i = 0; i < na; ++i) x[i] = interpolate(a[i], b[i]);
    for (; i < nb; ++i) c[i] = b[i];

return function(t) {
      for (i = 0; i < na; ++i) c[i] = x[i](t);
      return c;
    };
  }

function date(a, b) {
    var d = new Date;
    return a = +a, b = +b, function(t) {
      return d.setTime(a * (1 - t) + b * t), d;
    };
  }

function interpolateNumber(a, b) {
    return a = +a, b = +b, function(t) {
      return a * (1 - t) + b * t;
    };
  }

function object(a, b) {
    var i = {},
        c = {},
        k;

if (a === null || typeof a !== "object") a = {};
    if (b === null || typeof b !== "object") b = {};

for (k in b) {
      if (k in a) {
        i[k] = interpolate(a[k], b[k]);
      } else {
        c[k] = b[k];
      }
    }

return function(t) {
      for (k in i) c[k] = i[k](t);
      return c;
    };
  }

var reA = /[-+]?(?:\d+\.?\d*|\.?\d+)(?:[eE][-+]?\d+)?/g,
      reB = new RegExp(reA.source, "g");

function zero(b) {
    return function() {
      return b;
    };
  }

function one(b) {
    return function(t) {
      return b(t) + "";
    };
  }

function string(a, b) {
    var bi = reA.lastIndex = reB.lastIndex = 0, // scan index for next number in b
        am, // current match in a
        bm, // current match in b
        bs, // string preceding current number in b, if any
        i = -1, // index in s
        s = [], // string constants and placeholders
        q = []; // number interpolators

// Coerce inputs to strings.
    a = a + "", b = b + "";

// Interpolate pairs of numbers in a & b.
    while ((am = reA.exec(a))
        && (bm = reB.exec(b))) {
      if ((bs = bm.index) > bi) { // a string precedes the next number in b
        bs = b.slice(bi, bs);
        if (s[i]) s[i] += bs; // coalesce with previous string
        else s[++i] = bs;
      }
      if ((am = am[0]) === (bm = bm[0])) { // numbers in a & b match
        if (s[i]) s[i] += bm; // coalesce with previous string
        else s[++i] = bm;
      } else { // interpolate non-matching numbers
        s[++i] = null;
        q.push({i: i, x: interpolateNumber(am, bm)});
      }
      bi = reB.lastIndex;
    }

// Add remains of b.
    if (bi < b.length) {
      bs = b.slice(bi);
      if (s[i]) s[i] += bs; // coalesce with previous string
      else s[++i] = bs;
    }

// Special optimization for only a single match.
    // Otherwise, interpolate each of the numbers and rejoin the string.
    return s.length < 2 ? (q[0]
        ? one(q[0].x)
        : zero(b))
        : (b = q.length, function(t) {
            for (var i = 0, o; i < b; ++i) s[(o = q[i]).i] = o.x(t);
            return s.join("");
          });
  }

function interpolate(a, b) {
    var t = typeof b, c;
    return b == null || t === "boolean" ? constant$2(b)
        : (t === "number" ? interpolateNumber
        : t === "string" ? ((c = color(b)) ? (b = c, rgb$1) : string)
        : b instanceof color ? rgb$1
        : b instanceof Date ? date
        : isNumberArray(b) ? numberArray
        : Array.isArray(b) ? genericArray
        : typeof b.valueOf !== "function" && typeof b.toString !== "function" || isNaN(b) ? object
        : interpolateNumber)(a, b);
  }

function interpolateRound(a, b) {
    return a = +a, b = +b, function(t) {
      return Math.round(a * (1 - t) + b * t);
    };
  }

function constant$3(x) {
    return function() {
      return x;
    };
  }

function number(x) {
    return +x;
  }

var unit = [0, 1];

function identity$1(x) {
    return x;
  }

function normalize(a, b) {
    return (b -= (a = +a))
        ? function(x) { return (x - a) / b; }
        : constant$3(isNaN(b) ? NaN : 0.5);
  }

function clamper(a, b) {
    var t;
    if (a > b) t = a, a = b, b = t;
    return function(x) { return Math.max(a, Math.min(b, x)); };
  }

// normalize(a, b)(x) takes a domain value x in [a,b] and returns the corresponding parameter t in [0,1].
  // interpolate(a, b)(t) takes a parameter t in [0,1] and returns the corresponding range value x in [a,b].
  function bimap(domain, range, interpolate) {
    var d0 = domain[0], d1 = domain[1], r0 = range[0], r1 = range[1];
    if (d1 < d0) d0 = normalize(d1, d0), r0 = interpolate(r1, r0);
    else d0 = normalize(d0, d1), r0 = interpolate(r0, r1);
    return function(x) { return r0(d0(x)); };
  }

function polymap(domain, range, interpolate) {
    var j = Math.min(domain.length, range.length) - 1,
        d = new Array(j),
        r = new Array(j),
        i = -1;

// Reverse descending domains.
    if (domain[j] < domain[0]) {
      domain = domain.slice().reverse();
      range = range.slice().reverse();
    }

while (++i < j) {
      d[i] = normalize(domain[i], domain[i + 1]);
      r[i] = interpolate(range[i], range[i + 1]);
    }

return function(x) {
      var i = bisectRight(domain, x, 1, j) - 1;
      return r[i](d[i](x));
    };
  }

function copy(source, target) {
    return target
        .domain(source.domain())
        .range(source.range())
        .interpolate(source.interpolate())
        .clamp(source.clamp())
        .unknown(source.unknown());
  }

function transformer() {
    var domain = unit,
        range = unit,
        interpolate$1 = interpolate,
        transform,
        untransform,
        unknown,
        clamp = identity$1,
        piecewise,
        output,
        input;

function rescale() {
      var n = Math.min(domain.length, range.length);
      if (clamp !== identity$1) clamp = clamper(domain[0], domain[n - 1]);
      piecewise = n > 2 ? polymap : bimap;
      output = input = null;
      return scale;
    }

function scale(x) {
      return isNaN(x = +x) ? unknown : (output || (output = piecewise(domain.map(transform), range, interpolate$1)))(transform(clamp(x)));
    }

scale.invert = function(y) {
      return clamp(untransform((input || (input = piecewise(range, domain.map(transform), interpolateNumber)))(y)));
    };

scale.domain = function(_) {
      return arguments.length ? (domain = Array.from(_, number), rescale()) : domain.slice();
    };

scale.range = function(_) {
      return arguments.length ? (range = Array.from(_), rescale()) : range.slice();
    };

scale.rangeRound = function(_) {
      return range = Array.from(_), interpolate$1 = interpolateRound, rescale();
    };

scale.clamp = function(_) {
      return arguments.length ? (clamp = _ ? true : identity$1, rescale()) : clamp !== identity$1;
    };

scale.interpolate = function(_) {
      return arguments.length ? (interpolate$1 = _, rescale()) : interpolate$1;
    };

scale.unknown = function(_) {
      return arguments.length ? (unknown = _, scale) : unknown;
    };

return function(t, u) {
      transform = t, untransform = u;
      return rescale();
    };
  }

function continuous() {
    return transformer()(identity$1, identity$1);
  }

// Computes the decimal coefficient and exponent of the specified number x with
  // significant digits p, where x is positive and p is in [1, 21] or undefined.
  // For example, formatDecimal(1.23) returns ["123", 0].
  function formatDecimal(x, p) {
    if ((i = (x = p ? x.toExponential(p - 1) : x.toExponential()).indexOf("e")) < 0) return null; // NaN, ±Infinity
    var i, coefficient = x.slice(0, i);

// The string returned by toExponential either has the form \d\.\d+e[-+]\d+
    // (e.g., 1.2e+3) or the form \de[-+]\d+ (e.g., 1e+3).
    return [
      coefficient.length > 1 ? coefficient[0] + coefficient.slice(2) : coefficient,
      +x.slice(i + 1)
    ];
  }

function exponent(x) {
    return x = formatDecimal(Math.abs(x)), x ? x[1] : NaN;
  }

function formatGroup(grouping, thousands) {
    return function(value, width) {
      var i = value.length,
          t = [],
          j = 0,
          g = grouping[0],
          length = 0;

while (i > 0 && g > 0) {
        if (length + g + 1 > width) g = Math.max(1, width - length);
        t.push(value.substring(i -= g, i + g));
        if ((length += g + 1) > width) break;
        g = grouping[j = (j + 1) % grouping.length];
      }

return t.reverse().join(thousands);
    };
  }

function formatNumerals(numerals) {
    return function(value) {
      return value.replace(/[0-9]/g, function(i) {
        return numerals[+i];
      });
    };
  }

// [[fill]align][sign][symbol][0][width][,][.precision][~][type]
  var re = /^(?:(.)?([<>=^]))?([+\-( ])?([$#])?(0)?(\d+)?(,)?(\.\d+)?(~)?([a-z%])?$/i;

function formatSpecifier(specifier) {
    if (!(match = re.exec(specifier))) throw new Error("invalid format: " + specifier);
    var match;
    return new FormatSpecifier({
      fill: match[1],
      align: match[2],
      sign: match[3],
      symbol: match[4],
      zero: match[5],
      width: match[6],
      comma: match[7],
      precision: match[8] && match[8].slice(1),
      trim: match[9],
      type: match[10]
    });
  }

formatSpecifier.prototype = FormatSpecifier.prototype; // instanceof

function FormatSpecifier(specifier) {
    this.fill = specifier.fill === undefined ? " " : specifier.fill + "";
    this.align = specifier.align === undefined ? ">" : specifier.align + "";
    this.sign = specifier.sign === undefined ? "-" : specifier.sign + "";
    this.symbol = specifier.symbol === undefined ? "" : specifier.symbol + "";
    this.zero = !!specifier.zero;
    this.width = specifier.width === undefined ? undefined : +specifier.width;
    this.comma = !!specifier.comma;
    this.precision = specifier.precision === undefined ? undefined : +specifier.precision;
    this.trim = !!specifier.trim;
    this.type = specifier.type === undefined ? "" : specifier.type + "";
  }

FormatSpecifier.prototype.toString = function() {
    return this.fill
        + this.align
        + this.sign
        + this.symbol
        + (this.zero ? "0" : "")
        + (this.width === undefined ? "" : Math.max(1, this.width | 0))
        + (this.comma ? "," : "")
        + (this.precision === undefined ? "" : "." + Math.max(0, this.precision | 0))
        + (this.trim ? "~" : "")
        + this.type;
  };

// Trims insignificant zeros, e.g., replaces 1.2000k with 1.2k.
  function formatTrim(s) {
    out: for (var n = s.length, i = 1, i0 = -1, i1; i < n; ++i) {
      switch (s[i]) {
        case ".": i0 = i1 = i; break;
        case "0": if (i0 === 0) i0 = i; i1 = i; break;
        default: if (i0 > 0) { if (!+s[i]) break out; i0 = 0; } break;
      }
    }
    return i0 > 0 ? s.slice(0, i0) + s.slice(i1 + 1) : s;
  }

var prefixExponent;

function formatPrefixAuto(x, p) {
    var d = formatDecimal(x, p);
    if (!d) return x + "";
    var coefficient = d[0],
        exponent = d[1],
        i = exponent - (prefixExponent = Math.max(-8, Math.min(8, Math.floor(exponent / 3))) * 3) + 1,
        n = coefficient.length;
    return i === n ? coefficient
        : i > n ? coefficient + new Array(i - n + 1).join("0")
        : i > 0 ? coefficient.slice(0, i) + "." + coefficient.slice(i)
        : "0." + new Array(1 - i).join("0") + formatDecimal(x, Math.max(0, p + i - 1))[0]; // less than 1y!
  }

function formatRounded(x, p) {
    var d = formatDecimal(x, p);
    if (!d) return x + "";
    var coefficient = d[0],
        exponent = d[1];
    return exponent < 0 ? "0." + new Array(-exponent).join("0") + coefficient
        : coefficient.length > exponent + 1 ? coefficient.slice(0, exponent + 1) + "." + coefficient.slice(exponent + 1)
        : coefficient + new Array(exponent - coefficient.length + 2).join("0");
  }

function identity$2(x) {
    return x;
  }

var map$1 = Array.prototype.map,
      prefixes = ["y","z","a","f","p","n","µ","m","","k","M","G","T","P","E","Z","Y"];

function formatLocale(locale) {
    var group = locale.grouping === undefined || locale.thousands === undefined ? identity$2 : formatGroup(map$1.call(locale.grouping, Number), locale.thousands + ""),
        currencyPrefix = locale.currency === undefined ? "" : locale.currency[0] + "",
        currencySuffix = locale.currency === undefined ? "" : locale.currency[1] + "",
        decimal = locale.decimal === undefined ? "." : locale.decimal + "",
        numerals = locale.numerals === undefined ? identity$2 : formatNumerals(map$1.call(locale.numerals, String)),
        percent = locale.percent === undefined ? "%" : locale.percent + "",
        minus = locale.minus === undefined ? "-" : locale.minus + "",
        nan = locale.nan === undefined ? "NaN" : locale.nan + "";

function newFormat(specifier) {
      specifier = formatSpecifier(specifier);

var fill = specifier.fill,
          align = specifier.align,
          sign = specifier.sign,
          symbol = specifier.symbol,
          zero = specifier.zero,
          width = specifier.width,
          comma = specifier.comma,
          precision = specifier.precision,
          trim = specifier.trim,
          type = specifier.type;

// The "n" type is an alias for ",g".
      if (type === "n") comma = true, type = "g";

// The "" type, and any invalid type, is an alias for ".12~g".
      else if (!formatTypes[type]) precision === undefined && (precision = 12), trim = true, type = "g";

// If zero fill is specified, padding goes after sign and before digits.
      if (zero || (fill === "0" && align === "=")) zero = true, fill = "0", align = "=";

// Compute the prefix and suffix.
      // For SI-prefix, the suffix is lazily computed.
      var prefix = symbol === "$" ? currencyPrefix : symbol === "#" && /[boxX]/.test(type) ? "0" + type.toLowerCase() : "",
          suffix = symbol === "$" ? currencySuffix : /[%p]/.test(type) ? percent : "";

// What format function should we use?
      // Is this an integer type?
      // Can this type generate exponential notation?
      var formatType = formatTypes[type],
          maybeSuffix = /[defgprs%]/.test(type);

// Set the default precision if not specified,
      // or clamp the specified precision to the supported range.
      // For significant precision, it must be in [1, 21].
      // For fixed precision, it must be in [0, 20].
      precision = precision === undefined ? 6
          : /[gprs]/.test(type) ? Math.max(1, Math.min(21, precision))
          : Math.max(0, Math.min(20, precision));

function format(value) {
        var valuePrefix = prefix,
            valueSuffix = suffix,
            i, n, c;

if (type === "c") {
          valueSuffix = formatType(value) + valueSuffix;
          value = "";
        } else {
          value = +value;

// Perform the initial formatting.
          var valueNegative = value < 0;
          value = isNaN(value) ? nan : formatType(Math.abs(value), precision);

// Trim insignificant zeros.
          if (trim) value = formatTrim(value);

// If a negative value rounds to zero during formatting, treat as positive.
          if (valueNegative && +value === 0) valueNegative = false;

// Compute the prefix and suffix.
          valuePrefix = (valueNegative ? (sign === "(" ? sign : minus) : sign === "-" || sign === "(" ? "" : sign) + valuePrefix;

valueSuffix = (type === "s" ? prefixes[8 + prefixExponent / 3] : "") + valueSuffix + (valueNegative && sign === "(" ? ")" : "");

// Break the formatted value into the integer “value” part that can be
          // grouped, and fractional or exponential “suffix” part that is not.
          if (maybeSuffix) {
            i = -1, n = value.length;
            while (++i < n) {
              if (c = value.charCodeAt(i), 48 > c || c > 57) {
                valueSuffix = (c === 46 ? decimal + value.slice(i + 1) : value.slice(i)) + valueSuffix;
                value = value.slice(0, i);
                break;
              }
            }
          }
        }

// If the fill character is not "0", grouping is applied before padding.
        if (comma && !zero) value = group(value, Infinity);

// Compute the padding.
        var length = valuePrefix.length + value.length + valueSuffix.length,
            padding = length < width ? new Array(width - length + 1).join(fill) : "";

// If the fill character is "0", grouping is applied after padding.
        if (comma && zero) value = group(padding + value, padding.length ? width - valueSuffix.length : Infinity), padding = "";

// Reconstruct the final output based on the desired alignment.
        switch (align) {
          case "<": value = valuePrefix + value + valueSuffix + padding; break;
          case "=": value = valuePrefix + padding + value + valueSuffix; break;
          case "^": value = padding.slice(0, length = padding.length >> 1) + valuePrefix + value + valueSuffix + padding.slice(length); break;
          default: value = padding + valuePrefix + value + valueSuffix; break;
        }

return numerals(value);
      }

format.toString = function() {
        return specifier + "";
      };

return format;
    }

function formatPrefix(specifier, value) {
      var f = newFormat((specifier = formatSpecifier(specifier), specifier.type = "f", specifier)),
          e = Math.max(-8, Math.min(8, Math.floor(exponent(value) / 3))) * 3,
          k = Math.pow(10, -e),
          prefix = prefixes[8 + e / 3];
      return function(value) {
        return f(k * value) + prefix;
      };
    }

return {
      format: newFormat,
      formatPrefix: formatPrefix
    };
  }

var locale;
  var format$1;
  var formatPrefix;

defaultLocale({
    decimal: ".",
    thousands: ",",
    grouping: [3],
    currency: ["$", ""],
    minus: "-"
  });

function defaultLocale(definition) {
    locale = formatLocale(definition);
    format$1 = locale.format;
    formatPrefix = locale.formatPrefix;
    return locale;
  }

function precisionFixed(step) {
    return Math.max(0, -exponent(Math.abs(step)));
  }

function precisionPrefix(step, value) {
    return Math.max(0, Math.max(-8, Math.min(8, Math.floor(exponent(value) / 3))) * 3 - exponent(Math.abs(step)));
  }

function precisionRound(step, max) {
    step = Math.abs(step), max = Math.abs(max) - step;
    return Math.max(0, exponent(max) - exponent(step)) + 1;
  }

function linearish(scale) {
    var domain = scale.domain;

scale.ticks = function(count) {
      var d = domain();
      return ticks(d[0], d[d.length - 1], count == null ? 10 : count);
    };

scale.tickFormat = function(count, specifier) {
      var d = domain();
      return tickFormat(d[0], d[d.length - 1], count == null ? 10 : count, specifier);
    };

scale.nice = function(count) {
      if (count == null) count = 10;

var d = domain(),
          i0 = 0,
          i1 = d.length - 1,
          start = d[i0],
          stop = d[i1],
          step;

if (stop < start) {
        step = start, start = stop, stop = step;
        step = i0, i0 = i1, i1 = step;
      }

step = tickIncrement(start, stop, count);

if (step > 0) {
        start = Math.floor(start / step) * step;
        stop = Math.ceil(stop / step) * step;
        step = tickIncrement(start, stop, count);
      } else if (step < 0) {
        start = Math.ceil(start * step) / step;
        stop = Math.floor(stop * step) / step;
        step = tickIncrement(start, stop, count);
      }

if (step > 0) {
        d[i0] = Math.floor(start / step) * step;
        d[i1] = Math.ceil(stop / step) * step;
        domain(d);
      } else if (step < 0) {
        d[i0] = Math.ceil(start * step) / step;
        d[i1] = Math.floor(stop * step) / step;
        domain(d);
      }

return scale;
    };

return scale;
  }

function linear$1() {
    var scale = continuous();

scale.copy = function() {
      return copy(scale, linear$1());
    };

initRange.apply(scale, arguments);

return linearish(scale);
  }

function transformer$1() {
    var x0 = 0,
        x1 = 1,
        t0,
        t1,
        k10,
        transform,
        interpolator = identity$1,
        clamp = false,
        unknown;

function scale(x) {
      return isNaN(x = +x) ? unknown : interpolator(k10 === 0 ? 0.5 : (x = (transform(x) - t0) * k10, clamp ? Math.max(0, Math.min(1, x)) : x));
    }

scale.domain = function(_) {
      return arguments.length ? ([x0, x1] = _, t0 = transform(x0 = +x0), t1 = transform(x1 = +x1), k10 = t0 === t1 ? 0 : 1 / (t1 - t0), scale) : [x0, x1];
    };

scale.clamp = function(_) {
      return arguments.length ? (clamp = !!_, scale) : clamp;
    };

scale.interpolator = function(_) {
      return arguments.length ? (interpolator = _, scale) : interpolator;
    };

function range(interpolate) {
      return function(_) {
        var r0, r1;
        return arguments.length ? ([r0, r1] = _, interpolator = interpolate(r0, r1), scale) : [interpolator(0), interpolator(1)];
      };
    }

scale.range = range(interpolate);

scale.rangeRound = range(interpolateRound);

scale.unknown = function(_) {
      return arguments.length ? (unknown = _, scale) : unknown;
    };

return function(t) {
      transform = t, t0 = t(x0), t1 = t(x1), k10 = t0 === t1 ? 0 : 1 / (t1 - t0);
      return scale;
    };
  }

function copy$1(source, target) {
    return target
        .domain(source.domain())
        .interpolator(source.interpolator())
        .clamp(source.clamp())
        .unknown(source.unknown());
  }

function sequential() {
    var scale = linearish(transformer$1()(identity$1));

scale.copy = function() {
      return copy$1(scale, sequential());
    };

return initInterpolator.apply(scale, arguments);
  }

function colors(specifier) {
    var n = specifier.length / 6 | 0, colors = new Array(n), i = 0;
    while (i < n) colors[i] = "#" + specifier.slice(i * 6, ++i * 6);
    return colors;
  }

function ramp(scheme) {
    return rgbBasis(scheme[scheme.length - 1]);
  }

var scheme = new Array(3).concat(
    "fc8d59ffffbf99d594",
    "d7191cfdae61abdda42b83ba",
    "d7191cfdae61ffffbfabdda42b83ba",
    "d53e4ffc8d59fee08be6f59899d5943288bd",
    "d53e4ffc8d59fee08bffffbfe6f59899d5943288bd",
    "d53e4ff46d43fdae61fee08be6f598abdda466c2a53288bd",
    "d53e4ff46d43fdae61fee08bffffbfe6f598abdda466c2a53288bd",
    "9e0142d53e4ff46d43fdae61fee08be6f598abdda466c2a53288bd5e4fa2",
    "9e0142d53e4ff46d43fdae61fee08bffffbfe6f598abdda466c2a53288bd5e4fa2"
  ).map(colors);

var colorRainbow = ramp(scheme);

const COLOR_BASE = "#cecece";

// https://www.w3.org/TR/WCAG20/#relativeluminancedef
  const rc = 0.2126;
  const gc = 0.7152;
  const bc = 0.0722;
  // low-gamma adjust coefficient
  const lowc = 1 / 12.92;

function adjustGamma(_) {
    return Math.pow((_ + 0.055) / 1.055, 2.4);
  }

function relativeLuminance(o) {
    const rsrgb = o.r / 255;
    const gsrgb = o.g / 255;
    const bsrgb = o.b / 255;

const r = rsrgb <= 0.03928 ? rsrgb * lowc : adjustGamma(rsrgb);
    const g = gsrgb <= 0.03928 ? gsrgb * lowc : adjustGamma(gsrgb);
    const b = bsrgb <= 0.03928 ? bsrgb * lowc : adjustGamma(bsrgb);

return r * rc + g * gc + b * bc;
  }

const createRainbowColor = root => {
    const colorParentMap = new Map();
    colorParentMap.set(root, COLOR_BASE);

if (root.children != null) {
      const colorScale = sequential(
        [0, root.children.length - 1],
        colorRainbow
      );
      root.children.forEach((c, id) => {
        colorParentMap.set(c, colorScale(id));
      });
    }

const colorMap = new Map();

const lightScale = linear$1()
      .domain([0, root.height])
      .range([0.8, 0.1]);

const getBackgroundColor = node => {
      const parents = node.ancestors();
      const colorStr =
        parents.length === 1
          ? colorParentMap.get(parents[0])
          : colorParentMap.get(parents[parents.length - 2]);

const hslColor = hsl(colorStr);
      hslColor.l = lightScale(node.depth);

return hslColor;
    };

return node => {
      if (!colorMap.has(node)) {
        const backgroundColor = getBackgroundColor(node);
        const l = relativeLuminance(backgroundColor.rgb());
        const fontColor = l > 0.179 ? "#000" : "#fff";
        colorMap.set(node, { backgroundColor, fontColor });
      }

return colorMap.get(node);
    };
  };

const getNodePathTree = d =>
    d
      .ancestors()
      .reverse()
      .map(d => d.data.name)
      .join("/");

const getNodeSizeTree = d => d.value;

const getNodeUidTree = d => d.data.uid;

class Tooltip {
    constructor(container) {
      this.tooltip = container
        .append("div")
        .style("opacity", 0)
        .attr("class", "tooltip");

this.container = container;

this.onMouseLeave = this.onMouseLeave.bind(this);
      this.onMouseOver = this.onMouseOver.bind(this);
      this.onMouseMove = this.onMouseMove.bind(this);
    }

onMouseOver() {
      this.tooltip.style("opacity", 1);
    }

onMouseMove(event, data) {
      const { html } = this.tooltipContentCache.get(data);

this.tooltip.html(html);

const [x, y] = pointer(event, this.container.node());

const tooltipBox = this.tooltip.node().getBoundingClientRect();
      const containerBox = this.container.node().getBoundingClientRect();

const availableWidthRight = containerBox.width - x;
      const availableHeightBottom = containerBox.height - y;

for (const [pos, offset] of positionStyles) {
        this.tooltip.style(
          pos,
          typeof offset === "number" ? offset + "px" : offset
        );
      }
    }

onMouseLeave() {
      this.tooltip.style("opacity", 0);
    }

buildCache(
      contentNodes,
      {
        totalSize,
        getNodeSize = getNodeSizeTree,
        getNodePath = getNodePathTree,
        getNodeUid = getNodeUidTree,
        nodes,
        links
      }
    ) {
      this.tooltipContentCache = new Map();

const importedByCache = new Map();
      const importedCache = new Map();

for (const { source, target } of links || []) {
        if (!importedByCache.has(target)) {
          importedByCache.set(target, []);
        }
        if (!importedCache.has(source)) {
          importedCache.set(source, []);
        }

importedByCache.get(target).push({ uid: source, ...nodes[source] });
        importedCache.get(source).push({ uid: target, ...nodes[target] });
      }

contentNodes.each(data => {
        const contentCache = {};

const str = [];
        if (getNodePath != null) {
          str.push(getNodePath(data));
        }

const value = getNodeSize(data);
        if (value !== 0) {
          let sizeStr = `<b>Size: ${format_1(value)}</b>`;

if (totalSize != null) {
            const percentageNum = (100 * value) / totalSize;
            const percentage = percentageNum.toFixed(2);
            const percentageString = percentage + "%";

sizeStr += ` (${percentageString})`;
          }
          str.push(sizeStr);
        }

contentCache.html = str.join("<br/>");

this.tooltipContentCache.set(data, contentCache);
      });
    }
  }

const drawChart = (parentNode, { tree, nodes, links }, width, height) => {
    const layout = d3treemap()
      .size([width, height])
      .paddingOuter(8)
      .paddingTop(20)
      .paddingInner(5)
      .round(true)
      .tile(treemapResquarify);

const charNode = select(parentNode);

const svg = charNode.append("svg").attr("viewBox", [0, 0, width, height]);

const tooltip = new Tooltip(charNode);

let root = hierarchy(tree)
      .eachAfter(node => {
        let sum = 0;
        const children = node.children;
        if (children != null) {
          let i = children.length;
          while (--i >= 0) sum += children[i].value;
        } else {
          sum = nodes[node.data.uid].renderedLength;
        }

node.clipUid = uid("clip");
        node.nodeUid = uid("node");

node.originalValue = sum;
        node.value = sum;
      })
      .sort((a, b) => b.originalValue - a.originalValue);

const color = createRainbowColor(root);

const desiredValue = root.originalValue * 0.2;

const updateChart = selectedNode => {
      //handle zoom of selected node
      const selectedNodeMultiplier =
        selectedNode != null
          ? desiredValue > selectedNode.originalValue
            ? desiredValue / selectedNode.originalValue
            : 3
          : 1;

// i only need to increase value of leaf nodes
      // as folders will sum they up
      const nodesToIncrease =
        selectedNode != null
          ? selectedNode.children != null
            ? selectedNode.leaves()
            : [selectedNode]
          : [];

const nodesToIncreaseSet = new Set(nodesToIncrease);

// update value for nodes
      root = root.eachAfter(node => {
        let sum = 0;
        const children = node.children;
        if (children != null) {
          let i = children.length;
          while (--i >= 0) sum += children[i].value;
        } else {
          sum = nodesToIncreaseSet.has(node)
            ? node.originalValue * selectedNodeMultiplier
            : node.originalValue;
        }

node.value = sum;
      });

layout(root);

// this will make groups by height
      const nestedDataMap = group(root.descendants(), d => d.height);
      const nestedData = Array.from(nestedDataMap, ([key, values]) => ({
        key,
        values
      }));
      nestedData.sort((a, b) => b.key - a.key);

const layers = svg
        .selectAll(".layer")
        .data(nestedData, d => d.key)
        .join("g")
        .attr("class", "layer");

if (selectedNode != null) {
        rect
          .filter(d => d === selectedNode)
          .style("stroke", "#fff")
          .attr("stroke-width", 2);
      }

// add clipPath so text do not go out of node
      nodeGroups
        .selectAll("clipPath")
        .data(d => [d])
        .join("clipPath")
        .attr("id", d => d.clipUid.id)
        .selectAll("use")
        .data(d => [d])
        .join("use")
        .attr("xlink:href", d => d.nodeUid.href);

// add text with clipping
      const text = nodeGroups
        .selectAll("text")
        .data(d => [d])
        .join("text")
        .attr("clip-path", d => d.clipUid)
        .style("fill", d => color(d).fontColor);

text
        .selectAll("tspan")
        .data(d => [d.data.name, format_1(d.originalValue)])
        .join("tspan")
        .attr("fill-opacity", (d, i, nodes) =>
          i === nodes.length - 1 ? 0.7 : null
        )
        .style("font-size", "0.7em")
        .text(d => d);

nodeGroups
        .filter(d => d.children)
        .selectAll("tspan")
        .attr("dx", 3)
        .attr("y", 13);

nodeGroups
        .filter(d => !d.children)
        .selectAll("tspan")
        .attr("x", 3)
        .attr(
          "y",
          (d, i, nodes) => `${(i === nodes.length - 1) * 0.3 + 1.1 + i * 0.9}em`
        );

tooltip.buildCache(nodeGroups, {
        getNodeSize: d => d.originalValue,
        totalSize: root.originalValue,
        nodes,
        links
      });
    };

updateChart();
  };

return drawChart;

}());

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document.addEventListener('DOMContentLoaded', () => {
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ml>