D3 Examples - Debating + Recommendations Visualization

xxxxxxxxxx
 
<!DOCTYPE html>
<meta charset="utf-8">
<link href='https://fonts.googleapis.com/css?family=Open+Sans:300' rel='stylesheet' type='text/css'>
<style>
​
.node {
  cursor: pointer;
}
​
.node:hover {
  stroke: #000;
  stroke-width: 1.5px;
}
​
.node--root {
  stroke: #777;
  stroke-width: 2px;
  background-color: grey;
}
​
.node--leaf {
  fill: white;
}
  
.label {
  font: 11px "Helvetica Neue", Helvetica, Arial, sans-serif;
  text-anchor: middle;
  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;
}
​
</style>
<body>
<script src="https://d3js.org/d3.v3.min.js"></script>
<script>
​
var margin = 10,
    outerDiameter = 960,
    innerDiameter = outerDiameter - margin - margin;
​
var x = d3.scale.linear()
    .range([0, innerDiameter]);
​
var y = d3.scale.linear()
    .range([0, innerDiameter]);
​
var color = d3.scale.linear()
    .domain([-1, 5])
    .range(["#e1f4fd", "#00aeef"])
    .interpolate(d3.interpolateHcl);
  
var colorLeaf = d3.scale.linear()
    .domain([0, 3])
    .range(["#49b625", "#d93f34"])
    .interpolate(d3.interpolateHcl);
​
var pack = d3.layout.pack()
    .padding(2)
    .size([innerDiameter, innerDiameter])
    .value(function(d) { return d.size; })
​
var svg = d3.select("body").append("svg")
    .attr("width", outerDiameter)
    .attr("height", outerDiameter)
  .append("g")
    .attr("transform", "translate(" + margin + "," + margin + ")");
​
d3.json("flare.json", function(error, root) {
  var focus = root,
      nodes = pack.nodes(root),
      over = null;
​
  svg.append("g").selectAll("circle")
      .data(nodes)
        .enter().append("circle")
      .attr("class", function(d) { return d.parent ? d.children ? "node" : "node node--leaf" : "node node--root"; })
      .attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; })
      .attr("r", function(d) { return d.r; })
      .style("fill", function(d) { return d.children ? '#'+d.color : '#'+d.color; })
      .on("click", function(d) { return zoom(focus == d ? root : d); })
  .on("mouseover", function(circle) {
  
    d3.selectAll("text")
      .style("display", function(text) {
        return (circle == text || text.name.length < 30) ? "inline" : "none";
    });
    
  })
  .style("fill-opacity", function(d) {
      return d.parent === focus ? 1 : 0.2; });
​
  svg.append("g").selectAll("text")
      .data(nodes)
    .enter().append("text")
        .attr("class", function(d) {return (d.parent) ? "comment label" : "comment"})
      .attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; })
      .style("fill-opacity", function(d) { return d.parent === root ? 1 : 0; })
      .style("display", function(d) { return d.parent === root && d.name.length < 30 ? null : "none"; })
      .text(function(d) { return d.name; })
​
  d3.select(window)
      .on("click", function() { zoom(root); });
​
  function zoom(d, i) {
    var focus0 = focus;
    focus = d;
​
    var k = innerDiameter / d.r / 2;
    x.domain([d.x - d.r, d.x + d.r]);
    y.domain([d.y - d.r, d.y + d.r]);
    d3.event.stopPropagation();
​
    var transition = d3.selectAll("text,circle").transition()
        .duration(d3.event.altKey ? 7500 : 750)
        .attr("transform", function(d) { return "translate(" + x(d.x) + "," + y(d.y) + ")"; });
​
    transition.filter("circle")
        .attr("r", function(d) { return k * d.r; })
        .style("fill-opacity", function(d) {
            return d.parent === focus ? 1 : 0.1; })
        .each("start", function(d) {
          if (d.parent === focus)
            this.style.display = "inline";
        })
        .each("end", function(d) {
            this.style.display = "inline";
            });
​
    transition.filter("text")
      .filter(function(d) { return d.parent === focus || d.parent === focus0; })
        .style("fill-opacity", function(d) { return d.parent === focus ? 1 : 0; })
        .each("start", function(d) { if (d.parent === focus && d.name.length < 30) this.style.display = "inline"; })
        .each("end", function(d) { if (d.parent !== focus  || d.name.length > 30)                       this.style.display = "none"; });
            }
});
​
d3.select(self.frameElement).style("height", outerDiameter + "px");
​
</script>
    