D3 Examples - Treemap Padding

xxxxxxxxxx
 
<!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 text(text) {
    text.attr("x", function(d) { return x(d.x) + 6; })
        .attr("y", function(d) { return y(d.y) + 6; })
        .attr("fill", function (d) {return getContrast50(color(parseFloat(d.rate)))});
  }
​
  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); })
        .attr("fill", function(d){return color(parseFloat(d.rate));});
  }
​
  function name(d) {
    return d.parent
        ? name(d.parent) + "." + d.name
        : d.name;
  }
});
​
</script>
​
    