1 var w = 960,

     2     h = 500,

     3     fill = d3.scale.ordinal().range(colorbrewer.Greys[9].slice(1, 4)),

     4     stroke = d3.scale.linear().domain([0, 1e4]).range(["brown", "steelblue"]);

     5 

     6 var treemap = d3.layout.treemap()

     7     .size([w, h])

     8     .value(function(d) { return d.size; });

     9 

    10 var bundle = d3.layout.bundle();

    11 

    12 var div = d3.select("#chart").append("div")

    13     .style("position", "relative")

    14     .style("width", w + "px")

    15     .style("height", h + "px");

    16 

    17 var line = d3.svg.line()

    18     .interpolate("bundle")

    19     .tension(.85)

    20     .x(function(d) { return d.x + d.dx / 2; })

    21     .y(function(d) { return d.y + d.dy / 2; });

    22 

    23 d3.json("../data/flare-imports.json", function(classes) {

    24   var nodes = treemap.nodes(packages.root(classes)),

    25       links = packages.imports(nodes);

    26 

    27   div.selectAll("div")

    28       .data(nodes)

    29     .enter().append("div")

    30       .attr("class", "cell")

    31       .style("background", function(d) { return d.children ? fill(d.key) : null; })

    32       .call(cell)

    33       .text(function(d) { return d.children ? null : d.key; });

    34 

    35   div.append("svg:svg")

    36       .attr("width", w)

    37       .attr("height", h)

    38       .style("position", "absolute")

    39     .selectAll("path.link")

    40       .data(bundle(links))

    41     .enter().append("svg:path")

    42       .style("stroke", function(d) { return stroke(d[0].value); })

    43       .attr("class", "link")

    44       .attr("d", line);

    45 });

    46 

    47 function cell() {

    48   this

    49       .style("left", function(d) { return d.x + "px"; })

    50       .style("top", function(d) { return d.y + "px"; })

    51       .style("width", function(d) { return d.dx - 1 + "px"; })

    52       .style("height", function(d) { return d.dy - 1 + "px"; });

    53 }