VA Higher Ed Diversity (institutions with >5000 students)

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

.node {
  cursor: pointer;
}

.node:hover {
  stroke: #000;
  stroke-width: 1.5px;
}

.label {
  font: 16px "Helvetica Neue", Helvetica, Arial, sans-serif;
  text-anchor: middle;
  fill: gray;
  /*text-shadow: 0 1px 0 #fff, 1px 0 0 #fff, -1px 0 0 #fff, 0 -1px 0 #fff;*/
}

.label,
.node--root,
.node--leaf {
  pointer-events: none;
}

.node--root {
  font: 6px "Helvetica Neue", Helvetica, Arial, sans-serif;
  }

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

var margin = 20,
    diameter = 800;
  
function colorMap(n) {
  console.log(n);
  colors = {
    "Virginia": "#fff",//#3366cc",
    "black": "black", "hispanic": "orange", "white": "#ffe0bd", "asian": "c79778", "indian": "red", "islander": "blue", "2+": "#81fe38", "international": "#fe2da4"
  }
  var colores_g = ["#3366cc", "#dc3912", "#ff9900", "#109618", "#990099", "#0099c6", "#dd4477", "#66aa00", "#b82e2e", "#316395", "#994499", "#22aa99", "#aaaa11", "#6633cc", "#e67300", "#8b0707", "#651067", "#329262", "#5574a6", "#3b3eac"];
  return n.depth === 1 ? "white" : colors[n.name];
  //return colores_g[n % colores_g.length];
}

var color = d3.scale.linear()
    .domain([-1, 5])
    .range(["hsl(152,80%,80%)", "hsl(228,30%,40%)"])
    .interpolate(d3.interpolateHcl);

var pack = d3.layout.pack()
    .padding(2)
    .size([diameter - margin, diameter - margin])
    .value(function(d) { return d.size; })

var svg = d3.select("body").append("svg")
    .attr("width", diameter)
    .attr("height", diameter)
  .append("g")
    .attr("transform", "translate(" + diameter / 2 + "," + diameter / 2 + ")");

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

var focus = root,
      nodes = pack.nodes(root),
      view;

var node = svg.selectAll("circle,text");

d3.select("body")
      .style("background", "white")
      .on("click", function() { zoom(root); });

zoomTo([root.x, root.y, root.r * 2 + margin]);

function zoom(d) {
    var focus0 = focus; focus = d;
    console.log('focus0:', focus0);
    console.log('focus:', focus);

var transition = d3.transition()
        .duration(d3.event.altKey ? 7500 : 750)
        .tween("zoom", function(d) {
          var i = d3.interpolateZoom(view, [focus.x, focus.y, focus.r * 2 + margin]);
          return function(t) { zoomTo(i(t)); };
        });

transition.selectAll("text")
      .filter(function(d) { return d.parent === focus || this.style.display === "inline"; })
        .style("fill-opacity", function(d) { return d.parent === focus ? 1 : 0; })
          //.style("fill-opacity", function(d) { return focus.depth === 0 ? 1 : 0; })

.each("start", function(d) { if (d.parent === focus) this.style.display = "inline"; })
        .each("end", function(d) { if (d.parent !== focus) this.style.display = "none"; });
  }

d3.select(self.frameElement).style("height", diameter + "px");

</script>

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