enjalot/bubble.js

## bubble.js
var r = 480,
    format = d3.format(",d"),
    fill = d3.scale.category20c();

var keeper;

var bubble = d3.layout.pack()
    .sort(null)
    .size([r, r]);

var vis = d3.select("#chart").append("svg:svg")
    .attr("width", r)
    .attr("height", r)
    .attr("class", "bubble");

//d3.json("../data/flaretest.json", function(json) {

//	keeper = json;
console.log(keeper);
  var node = vis.selectAll("g.node")
      .data(bubble.nodes(classes(keeper))
      .filter(function(d) { return !d.children; }))
    .enter().append("svg:g")
      .attr("class", "node")
      .attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });

  node.append("svg:title")
      .text(function(d) { return d.className + ": " + format(d.value); });

  node.append("svg:circle")
      .attr("r", function(d) { return d.r; })
      .style("fill", function(d) { return fill(d.packageName); });

  node.append("svg:text")
      .attr("text-anchor", "middle")
      .attr("dy", ".3em")
      .text(function(d) { return d.className.substring(0, d.r / 3); });

console.log(node);


function switchIt() {
    var nodes = bubble.nodes(classes(keeper))
      .filter(function(d) { return !d.children; });
    nodes.forEach(function(n,i) {
        n.r/= 2;
    });


  var snode = vis.selectAll("g.node")
      .data(nodes, function(d,i) {
           return d.className; });

console.log(snode);

  snode.select("text")
	 .transition()
	 .delay(100)
	 .duration(500)
	 .text(function(d) {
             var s = d.className + ": " + format(d.value);
             console.log(s);
             return s;
         });

  snode.select("circle")
	 .transition()
	 .delay(100)
	 .duration(500)
      .attr("r", function(d) { return d.r; })
      .style("fill", function(d) { return fill(d.packageName); });


};

// Returns a flattened hierarchy containing all leaf nodes under the root.
function classes(root) {
  var classes = [];

  function recurse(name, node) {
    if (node.children) node.children.forEach(function(child) { recurse(node.name, child); });
    else classes.push({packageName: name, className: node.name, value: node.size});
  }

  recurse(null, root);
  return {children: classes};
}

d3.select("#knop").on("click", switchIt);

//});

## flaretest.json
var keeper = {
    "naam": "things",
    "children": [
        {
            "name": "bloeb",
            "size": 310023
        },
        {
            "name": "poef",
            "size": 1874900
        },
        {
            "name": "dapp",
            "size": 412440
        }
    ]
}

## index.html
<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html;charset=utf-8">
    <title>Bubble Chart</title>
     <script type="text/javascript" src="http://mbostock.github.com/d3/d3.js?2.3.0"></script>
   <script type="text/javascript" src="http://mbostock.github.com/d3/d3.layout.js?2.3.0"></script>
    <link type="text/css" rel="stylesheet" href="bubble.css"/>
  </head>
  <body>
    <div id="chart"></div>
	<input type="button" id="knop" class="buttons" value=">1>">

    <script type="text/javascript" src="flaretest.json"></script>
    <script type="text/javascript" src="bubble.js"></script>

  </body>
</html>
	var r = 480,
	format = d3.format(",d"),
	fill = d3.scale.category20c();

	var keeper;

	var bubble = d3.layout.pack()
	.sort(null)
	.size([r, r]);

	var vis = d3.select("#chart").append("svg:svg")
	.attr("width", r)
	.attr("height", r)
	.attr("class", "bubble");

	//d3.json("../data/flaretest.json", function(json) {

	// keeper = json;
	console.log(keeper);
	var node = vis.selectAll("g.node")
	.data(bubble.nodes(classes(keeper))
	.filter(function(d) { return !d.children; }))
	.enter().append("svg:g")
	.attr("class", "node")
	.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });

	node.append("svg:title")
	.text(function(d) { return d.className + ": " + format(d.value); });

	node.append("svg:circle")
	.attr("r", function(d) { return d.r; })
	.style("fill", function(d) { return fill(d.packageName); });

	node.append("svg:text")
	.attr("text-anchor", "middle")
	.attr("dy", ".3em")
	.text(function(d) { return d.className.substring(0, d.r / 3); });

	console.log(node);



	function switchIt() {
	var nodes = bubble.nodes(classes(keeper))
	.filter(function(d) { return !d.children; });
	nodes.forEach(function(n,i) {
	n.r/= 2;
	});



	var snode = vis.selectAll("g.node")
	.data(nodes, function(d,i) {
	return d.className; });

	console.log(snode);

	snode.select("text")
	.transition()
	.delay(100)
	.duration(500)
	.text(function(d) {
	var s = d.className + ": " + format(d.value);
	console.log(s);
	return s;
	});

	snode.select("circle")
	.transition()
	.delay(100)
	.duration(500)
	.attr("r", function(d) { return d.r; })
	.style("fill", function(d) { return fill(d.packageName); });


	};

	// Returns a flattened hierarchy containing all leaf nodes under the root.
	function classes(root) {
	var classes = [];

	function recurse(name, node) {
	if (node.children) node.children.forEach(function(child) { recurse(node.name, child); });
	else classes.push({packageName: name, className: node.name, value: node.size});
	}

	recurse(null, root);
	return {children: classes};
	}

	d3.select("#knop").on("click", switchIt);

	//});
	var keeper = {
	"naam": "things",
	"children": [
	{
	"name": "bloeb",
	"size": 310023
	},
	{
	"name": "poef",
	"size": 1874900
	},
	{
	"name": "dapp",
	"size": 412440
	}
	]
	}
	<!DOCTYPE html>
	<html>
	<head>
	<meta http-equiv="Content-Type" content="text/html;charset=utf-8">
	<title>Bubble Chart</title>
	<script type="text/javascript" src="http://mbostock.github.com/d3/d3.js?2.3.0"></script>
	<script type="text/javascript" src="http://mbostock.github.com/d3/d3.layout.js?2.3.0"></script>
	<link type="text/css" rel="stylesheet" href="bubble.css"/>
	</head>
	<body>
	<div id="chart"></div>
	<input type="button" id="knop" class="buttons" value=">1>">

	<script type="text/javascript" src="flaretest.json"></script>
	<script type="text/javascript" src="bubble.js"></script>

	</body>
	</html>