Treemap Padding

forked from mbostock's block: Treemap Padding

<!DOCTYPE html>
<meta charset="utf-8">
<style>

.node {
  border: solid 1px white;
  font: 10px sans-serif;
  line-height: 12px;
  overflow: hidden;
  position: absolute;
  text-indent: 2px;
}

</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script>

var width = 960,
    height = 500;

var color = d3.scale.category20c();

var treemap = d3.layout.treemap()
    .size([width, height])
    .padding(4)
    .value(function(d) { return d.size; });

var div = d3.select("body").append("div")
    .style("position", "relative")
    .style("width", width + "px")
    .style("height", height + "px");

d3.json("flare.json", function(error, root) {
  if (error) throw error;

//console.log(root)
  initialize(root);
  accumulate(root);
  layout(root);
  display(root);

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

// color header based on grandparent's rate
    grandparent
      .datum(d.parent)
      .select("rect")
      .attr("fill", function(){console.log(color(d.rate)); return color(d['rate'])})

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

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

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

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

g.append("rect")
        .attr("class", "parent")
        .call(rect)
      .append("title")
        .text(function(d) {console.log(typeof(d.value), d.value); return d.name + ', Cases of TB: ' + d.value + ', percent change: ' + formatNumber(d.rate); });

g.append("text")
        .attr("dy", ".75em")
        .text(function(d) { return d.name; })
        .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 name(d) {
    return d.parent
        ? name(d.parent) + "." + d.name
        : d.name;
  }
});

</script>

https://d3js.org/d3.v3.min.js