maw246/hier.csv

## hier.csv

          
            thedad
            name
            value

            
              Homer Simpson
              Bart
              20

            
              Homer Simpson
              Lisa
              14

            
              Homer Simpson
              Maggie
              6

            
              Peter Griffin
              Chris
              19

            
              Peter Griffin
              Meg
              12

            
              Peter Griffin
              Stewie
              16

            
              Bart
              Bart Junior A
              77

            
              Bart
              Bart Junior B
              32

## index.html
<!DOCTYPE html>
<meta charset="utf-8">
<title>Zoomable Treemaps from CSV</title>
<style>

@import url(./style.css);

#chart {
  width: 960px;
  height: 500px;
  background: #bbb;
}

text {
  pointer-events: none;
}

.grandparent text {
  font-weight: bold;
}

rect {
  fill: none;
  stroke: #fff;
}

rect.parent,
.grandparent rect {
  stroke-width: 2px;
}

.grandparent rect {
  fill: orange;
}

.grandparent:hover rect {
  fill: #ee9700;
}

.children rect.parent,
.grandparent rect {
  cursor: pointer;
}

rect.parent {
  pointer-events: all;
}

.children:hover rect.child {
  fill: #aaa;
}

</style>

<header>
  <aside>November 4, 2013</aside>
  <a href="../" rel="author">maw246</a>
</header>

<h1>Zoomable Treemaps from CSV</h1>

<p id="chart"></p>

<aside>Click any cell to zoom in, or the top orange label to zoom out.</aside>

<p>Derived from <a href="http://bost.ocks.org/mike/treemap/">Mike Bostock's example</a>.</p>

<p>Whereas Mr. Bostock's example uses <i>flare.json</i>, this example utilizes D3's CSV capabilities to process comma-separated data.</p>

<footer>
  <aside>November 4, 2013</aside>
  <a href="../" rel="author">maw246</a>
</footer>

<!--<script src="http://d3js.org/d3.v2.js?2.9.1"></script>-->
<script src="http://d3js.org/d3.v3.js?2.9.1"></script>
<script>

var margin = {top: 20, right: 0, bottom: 0, left: 0},
    width = 960,
    height = 500 - margin.top - margin.bottom,
    //formatNumber = d3.format(",d"),
    formatNumber = function(val) {return val},
    transitioning;

var x = d3.scale.linear()
    .domain([0, width])
    .range([0, width]);

var y = d3.scale.linear()
    .domain([0, height])
    .range([0, height]);

var svg = d3.select("#chart").append("svg")
    .attr("width", width + margin.left + margin.right)
    .attr("height", height + margin.bottom + margin.top)
    .style("margin-left", -margin.left + "px")
    .style("margin.right", -margin.right + "px")
  .append("g")
    .attr("transform", "translate(" + margin.left + "," + margin.top + ")")
    .style("shape-rendering", "crispEdges");

var grandparent = svg.append("g")
    .attr("class", "grandparent");

grandparent.append("rect")
    .attr("y", -margin.top)
    .attr("width", width)
    .attr("height", margin.top);

grandparent.append("text")
    .attr("x", 6)
    .attr("y", 6 - margin.top)
    .attr("dy", ".75em");


//d3.json("flare.json", function(root) {
d3.csv("hier.csv", function(hier) {
//d3.json(myRoot, function(root) {

console.log("Before:");
console.log(hier);

var root = {"key":"Fox Cartoons"
        , "values":d3.nest()
                .key(function (d) { return d.thedad; })
                .entries(hier)
            }

console.log("After:");
console.log(root);

  //var data = root;

var treemap = d3.layout.treemap()
    //.children(function(d, depth) { return depth ? null : d.children; })
    .children(function(d, depth) { return depth ? null : d.values; })
    //.text(function(d) { return d.key; })
    .value(function(d) { return d.value; })
    .sort(function(a, b) { return a.value - b.value; })
    .ratio(height / width * 0.5 * (1 + Math.sqrt(5)))
    .round(false);

  initialize(root);
  accumulate(root);
  layout(root);
  display(root);

  function initialize(root) {
    root.x = root.y = 0;
    root.dx = width;
    root.dy = height;
    root.depth = 0;
  }

  // Aggregate the values for internal nodes. This is normally done by the
  // treemap layout, but not here because of our custom implementation.
  function accumulate(d) {
    //console.log(d.children);
    return d.values
        ? d.value = d.values.reduce(function(p, v) { return p + accumulate(v); }, 0)
        : +d.value;
  }

  // Compute the treemap layout recursively such that each group of siblings
  // uses the same size (1×1) rather than the dimensions of the parent cell.
  // This optimizes the layout for the current zoom state. Note that a wrapper
  // object is created for the parent node for each group of siblings so that
  // the parent’s dimensions are not discarded as we recurse. Since each group
  // of sibling was laid out in 1×1, we must rescale to fit using absolute
  // coordinates. This lets us use a viewport to zoom.
  function layout(d) {
    if (d.values) {
      treemap.nodes({values: d.values});
      d.values.forEach(function(c) {
        c.x = d.x + c.x * d.dx;
        c.y = d.y + c.y * d.dy;
        c.dx *= d.dx;
        c.dy *= d.dy;
        c.parent = d;
        layout(c);
      });
    }
  }

  function display(d) {
    grandparent
        .datum(d.parent)
        .on("click", transition)
      .select("text")
        .text(name(d));

    var g1 = svg.insert("g", ".grandparent")
        .datum(d)
        .attr("class", "depth");

    var g = g1.selectAll("g")
        .data(d.values)
      .enter().append("g");

    g.filter(function(d) { return d.values; })
        .classed("children", true)
        .on("click", transition);

    g.selectAll(".child")
        .data(function(d) { return d.values || [d]; })
      .enter().append("rect")
        .attr("class", "child")
        .call(rect);

    g.append("rect")
        .attr("class", "parent")
        .call(rect)
      .append("title")
        .text(function(d) { return formatNumber(+d.value); });

    g.append("text")
        .attr("dy", ".75em")
        .text(function(d) { return name(d); })
        .call(text);

    function transition(d) {
      if (transitioning || !d) return;
      transitioning = true;

      var g2 = display(d),
          t1 = g1.transition().duration(750),
          t2 = g2.transition().duration(750);

      // Update the domain only after entering new elements.
      x.domain([d.x, d.x + d.dx]);
      y.domain([d.y, d.y + d.dy]);

      // Enable anti-aliasing during the transition.
      svg.style("shape-rendering", null);

      // Draw child nodes on top of parent nodes.
      svg.selectAll(".depth").sort(function(a, b) { return a.depth - b.depth; });

      // Fade-in entering text.
      g2.selectAll("text").style("fill-opacity", 0);

      // Transition to the new view.
      t1.selectAll("text").call(text).style("fill-opacity", 0);
      t2.selectAll("text").call(text).style("fill-opacity", 1);
      t1.selectAll("rect").call(rect);
      t2.selectAll("rect").call(rect);

      // Remove the old node when the transition is finished.
      t1.remove().each("end", function() {
        svg.style("shape-rendering", "crispEdges");
        transitioning = false;
      });
    }

    return g;
  }

  function text(text) {
    text.attr("x", function(d) { return x(d.x) + 6; })
        .attr("y", function(d) { return y(d.y) + 6; });
  }

  function rect(rect) {
    rect.attr("x", function(d) { return x(d.x); })
        .attr("y", function(d) { return y(d.y); })
        .attr("width", function(d) { return x(d.x + d.dx) - x(d.x); })
        .attr("height", function(d) { return y(d.y + d.dy) - y(d.y); });
  }

/*
  function name(d) {
    return d.parent
        ? name(d.parent) + "." + d.name
        : d.name;
  }
*/
  function name(d) {
    return d.parent
        ? name(d.parent) + "." + d.key
        : d.key;
  }

});

</script>

## style.css
/* This is an exact copy of the style.css from Bostock's example.  No changes except this comment. */
@import url(http://fonts.googleapis.com/css?family=PT+Serif|PT+Serif:b|PT+Serif:i|PT+Sans|PT+Sans:b);

html {
  min-width: 1040px;
}

body {
  background: #fcfcfa;
  color: #333;
  font-family: "PT Serif", serif;
  margin: 1em auto 4em auto;
  position: relative;
  width: 960px;
}

header,
footer,
h1,
h2,
h3,
h4,
aside {
  color: #000;
  font-family: "PT Sans", sans-serif;
}

h1 {
  font-size: 64px;
  font-weight: 300;
  letter-spacing: -2px;
  margin: .3em 0 .1em 0;
}

h2 {
  margin-top: 2em;
}

h1, h2 {
  text-rendering: optimizeLegibility;
}

h2 a {
  color: #ccc;
  left: -20px;
  position: absolute;
  width: 740px;
}

footer {
  font-size: small;
  margin-top: 8em;
}

header aside {
  margin-top: 88px;
}

header aside,
footer aside {
  color: #636363;
  text-align: right;
}

aside {
  font-size: small;
  right: 0;
  position: absolute;
  width: 180px;
}

.attribution {
  font-size: small;
  margin-bottom: 2em;
}

body > p, li > p {
  line-height: 1.5em;
}

body > p {
  width: 720px;
}

body > blockquote {
  width: 640px;
}

blockquote q {
  display: block;
  font-style: oblique;
}

li {
  width: 680px;
}

a {
  color: steelblue;
}

a:not(:hover) {
  text-decoration: none;
}

pre, code, textarea {
  font-family: "Menlo", monospace;
}

code {
  line-height: 1em;
}

textarea {
  font-size: 100%;
}

body > pre {
  border-left: solid 2px #ccc;
  padding-left: 18px;
  margin: 2em 0 2em -20px;
}

.html .value,
.javascript .string,
.javascript .regexp {
  color: #756bb1;
}

.html .tag,
.css .tag,
.javascript .keyword {
  color: #3182bd;
}

.comment {
  color: #636363;
}

.html .doctype,
.javascript .number {
  color: #31a354;
}

.html .attribute,
.css .attribute,
.javascript .class,
.javascript .special {
  color: #e6550d;
}

svg {
  font: 10px sans-serif;
}

.axis path, .axis line {
  fill: none;
  stroke: #000;
  shape-rendering: crispEdges;
}

sup, sub {
  line-height: 0;
}

q:before {
  content: "â€œ";
}

q:after {
  content: "â€";
}

blockquote:before {
  position: absolute;
  left: 2em;
}

blockquote:after {
  position: absolute;
}
thedad	name	value
Homer Simpson	Bart	20
Homer Simpson	Lisa	14
Homer Simpson	Maggie	6
Peter Griffin	Chris	19
Peter Griffin	Meg	12
Peter Griffin	Stewie	16
Bart	Bart Junior A	77
Bart	Bart Junior B	32
	<!DOCTYPE html>
	<meta charset="utf-8">
	<title>Zoomable Treemaps from CSV</title>
	<style>

	@import url(./style.css);

	#chart {
	width: 960px;
	height: 500px;
	background: #bbb;
	}

	text {
	pointer-events: none;
	}

	.grandparent text {
	font-weight: bold;
	}

	rect {
	fill: none;
	stroke: #fff;
	}

	rect.parent,
	.grandparent rect {
	stroke-width: 2px;
	}

	.grandparent rect {
	fill: orange;
	}

	.grandparent:hover rect {
	fill: #ee9700;
	}

	.children rect.parent,
	.grandparent rect {
	cursor: pointer;
	}

	rect.parent {
	pointer-events: all;
	}

	.children:hover rect.child {
	fill: #aaa;
	}

	</style>

	<header>
	<aside>November 4, 2013</aside>
	<a href="../" rel="author">maw246</a>
	</header>

	<h1>Zoomable Treemaps from CSV</h1>

	<p id="chart"></p>

	<aside>Click any cell to zoom in, or the top orange label to zoom out.</aside>

	<p>Derived from <a href="http://bost.ocks.org/mike/treemap/">Mike Bostock's example</a>.</p>

	<p>Whereas Mr. Bostock's example uses <i>flare.json</i>, this example utilizes D3's CSV capabilities to process comma-separated data.</p>

	<footer>
	<aside>November 4, 2013</aside>
	<a href="../" rel="author">maw246</a>
	</footer>

	<!--<script src="http://d3js.org/d3.v2.js?2.9.1"></script>-->
	<script src="http://d3js.org/d3.v3.js?2.9.1"></script>
	<script>

	var margin = {top: 20, right: 0, bottom: 0, left: 0},
	width = 960,
	height = 500 - margin.top - margin.bottom,
	//formatNumber = d3.format(",d"),
	formatNumber = function(val) {return val},
	transitioning;

	var x = d3.scale.linear()
	.domain([0, width])
	.range([0, width]);

	var y = d3.scale.linear()
	.domain([0, height])
	.range([0, height]);

	var svg = d3.select("#chart").append("svg")
	.attr("width", width + margin.left + margin.right)
	.attr("height", height + margin.bottom + margin.top)
	.style("margin-left", -margin.left + "px")
	.style("margin.right", -margin.right + "px")
	.append("g")
	.attr("transform", "translate(" + margin.left + "," + margin.top + ")")
	.style("shape-rendering", "crispEdges");

	var grandparent = svg.append("g")
	.attr("class", "grandparent");

	grandparent.append("rect")
	.attr("y", -margin.top)
	.attr("width", width)
	.attr("height", margin.top);

	grandparent.append("text")
	.attr("x", 6)
	.attr("y", 6 - margin.top)
	.attr("dy", ".75em");


	//d3.json("flare.json", function(root) {
	d3.csv("hier.csv", function(hier) {
	//d3.json(myRoot, function(root) {

	console.log("Before:");
	console.log(hier);

	var root = {"key":"Fox Cartoons"
	, "values":d3.nest()
	.key(function (d) { return d.thedad; })
	.entries(hier)
	}

	console.log("After:");
	console.log(root);

	//var data = root;

	var treemap = d3.layout.treemap()
	//.children(function(d, depth) { return depth ? null : d.children; })
	.children(function(d, depth) { return depth ? null : d.values; })
	//.text(function(d) { return d.key; })
	.value(function(d) { return d.value; })
	.sort(function(a, b) { return a.value - b.value; })
	.ratio(height / width * 0.5 * (1 + Math.sqrt(5)))
	.round(false);

	initialize(root);
	accumulate(root);
	layout(root);
	display(root);

	function initialize(root) {
	root.x = root.y = 0;
	root.dx = width;
	root.dy = height;
	root.depth = 0;
	}

	// Aggregate the values for internal nodes. This is normally done by the
	// treemap layout, but not here because of our custom implementation.
	function accumulate(d) {
	//console.log(d.children);
	return d.values
	? d.value = d.values.reduce(function(p, v) { return p + accumulate(v); }, 0)
	: +d.value;
	}

	// Compute the treemap layout recursively such that each group of siblings
	// uses the same size (1×1) rather than the dimensions of the parent cell.
	// This optimizes the layout for the current zoom state. Note that a wrapper
	// object is created for the parent node for each group of siblings so that
	// the parent’s dimensions are not discarded as we recurse. Since each group
	// of sibling was laid out in 1×1, we must rescale to fit using absolute
	// coordinates. This lets us use a viewport to zoom.
	function layout(d) {
	if (d.values) {
	treemap.nodes({values: d.values});
	d.values.forEach(function(c) {
	c.x = d.x + c.x * d.dx;
	c.y = d.y + c.y * d.dy;
	c.dx *= d.dx;
	c.dy *= d.dy;
	c.parent = d;
	layout(c);
	});
	}
	}

	function display(d) {
	grandparent
	.datum(d.parent)
	.on("click", transition)
	.select("text")
	.text(name(d));

	var g1 = svg.insert("g", ".grandparent")
	.datum(d)
	.attr("class", "depth");

	var g = g1.selectAll("g")
	.data(d.values)
	.enter().append("g");

	g.filter(function(d) { return d.values; })
	.classed("children", true)
	.on("click", transition);

	g.selectAll(".child")
	.data(function(d) { return d.values \|\| [d]; })
	.enter().append("rect")
	.attr("class", "child")
	.call(rect);

	g.append("rect")
	.attr("class", "parent")
	.call(rect)
	.append("title")
	.text(function(d) { return formatNumber(+d.value); });

	g.append("text")
	.attr("dy", ".75em")
	.text(function(d) { return name(d); })
	.call(text);

	function transition(d) {
	if (transitioning \|\| !d) return;
	transitioning = true;

	var g2 = display(d),
	t1 = g1.transition().duration(750),
	t2 = g2.transition().duration(750);

	// Update the domain only after entering new elements.
	x.domain([d.x, d.x + d.dx]);
	y.domain([d.y, d.y + d.dy]);

	// Enable anti-aliasing during the transition.
	svg.style("shape-rendering", null);

	// Draw child nodes on top of parent nodes.
	svg.selectAll(".depth").sort(function(a, b) { return a.depth - b.depth; });

	// Fade-in entering text.
	g2.selectAll("text").style("fill-opacity", 0);

	// Transition to the new view.
	t1.selectAll("text").call(text).style("fill-opacity", 0);
	t2.selectAll("text").call(text).style("fill-opacity", 1);
	t1.selectAll("rect").call(rect);
	t2.selectAll("rect").call(rect);

	// Remove the old node when the transition is finished.
	t1.remove().each("end", function() {
	svg.style("shape-rendering", "crispEdges");
	transitioning = false;
	});
	}

	return g;
	}

	function text(text) {
	text.attr("x", function(d) { return x(d.x) + 6; })
	.attr("y", function(d) { return y(d.y) + 6; });
	}

	function rect(rect) {
	rect.attr("x", function(d) { return x(d.x); })
	.attr("y", function(d) { return y(d.y); })
	.attr("width", function(d) { return x(d.x + d.dx) - x(d.x); })
	.attr("height", function(d) { return y(d.y + d.dy) - y(d.y); });
	}

	/*
	function name(d) {
	return d.parent
	? name(d.parent) + "." + d.name
	: d.name;
	}
	*/
	function name(d) {
	return d.parent
	? name(d.parent) + "." + d.key
	: d.key;
	}

	});

	</script>
	/* This is an exact copy of the style.css from Bostock's example. No changes except this comment. */
	@import url(http://fonts.googleapis.com/css?family=PT+Serif\|PT+Serif:b\|PT+Serif:i\|PT+Sans\|PT+Sans:b);

	html {
	min-width: 1040px;
	}

	body {
	background: #fcfcfa;
	color: #333;
	font-family: "PT Serif", serif;
	margin: 1em auto 4em auto;
	position: relative;
	width: 960px;
	}

	header,
	footer,
	h1,
	h2,
	h3,
	h4,
	aside {
	color: #000;
	font-family: "PT Sans", sans-serif;
	}

	h1 {
	font-size: 64px;
	font-weight: 300;
	letter-spacing: -2px;
	margin: .3em 0 .1em 0;
	}

	h2 {
	margin-top: 2em;
	}

	h1, h2 {
	text-rendering: optimizeLegibility;
	}

	h2 a {
	color: #ccc;
	left: -20px;
	position: absolute;
	width: 740px;
	}

	footer {
	font-size: small;
	margin-top: 8em;
	}

	header aside {
	margin-top: 88px;
	}

	header aside,
	footer aside {
	color: #636363;
	text-align: right;
	}

	aside {
	font-size: small;
	right: 0;
	position: absolute;
	width: 180px;
	}

	.attribution {
	font-size: small;
	margin-bottom: 2em;
	}

	body > p, li > p {
	line-height: 1.5em;
	}

	body > p {
	width: 720px;
	}

	body > blockquote {
	width: 640px;
	}

	blockquote q {
	display: block;
	font-style: oblique;
	}

	li {
	width: 680px;
	}

	a {
	color: steelblue;
	}

	a:not(:hover) {
	text-decoration: none;
	}

	pre, code, textarea {
	font-family: "Menlo", monospace;
	}

	code {
	line-height: 1em;
	}

	textarea {
	font-size: 100%;
	}

	body > pre {
	border-left: solid 2px #ccc;
	padding-left: 18px;
	margin: 2em 0 2em -20px;
	}

	.html .value,
	.javascript .string,
	.javascript .regexp {
	color: #756bb1;
	}

	.html .tag,
	.css .tag,
	.javascript .keyword {
	color: #3182bd;
	}

	.comment {
	color: #636363;
	}

	.html .doctype,
	.javascript .number {
	color: #31a354;
	}

	.html .attribute,
	.css .attribute,
	.javascript .class,
	.javascript .special {
	color: #e6550d;
	}

	svg {
	font: 10px sans-serif;
	}

	.axis path, .axis line {
	fill: none;
	stroke: #000;
	shape-rendering: crispEdges;
	}

	sup, sub {
	line-height: 0;
	}

	q:before {
	content: "â€œ";
	}

	q:after {
	content: "â€";
	}

	blockquote:before {
	position: absolute;
	left: 2em;
	}

	blockquote:after {
	position: absolute;
	}