block by steveharoz 0638d230c133da1de385

Pie Chart

Full Screen

Stackoverflow question: http://stackoverflow.com/questions/32549683/d3js-json-pie-chart?noredirect=1#comment52995750_32549683

index.html

<!doctype html>
<html>
<head>
    <title>Pie Chart Test</title>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
</head>
<style>

body {
  font: 10px sans-serif;
}

.arc path {
  stroke: #fff;
}
</style>

<body>


<script>
var width = 960,
    height = 500,
    radius = Math.min(width, height) / 2;
var color = d3.scale.ordinal()
    .range(["#98abc5", "#8a89a6", "#7b6888", "#6b486b", "#a05d56", "#d0743c", "#ff8c00"]);
var arc = d3.svg.arc()
    .outerRadius(radius - 10)
    .innerRadius(0);

// defines wedge size
var pie = d3.layout.pie()
    .sort(null)
    .value(function (d) { return d.ratio; });

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

d3.json("data.json", function(error, data) {
  node = data.data[0].ap[0].floorratio;

  var g = svg.selectAll(".arc")
      .data(pie(node))
      .enter().append("g")
      .attr("class", "arc");

  g.append("path")
      .attr("d", arc)
      .style("fill", function(d) { return color(d.data.floor); });

  g.append("text")
      .attr("transform", function (d) { return "translate(" + arc.centroid(d) + ")"; })
      .attr("dy", ".35em")
      .style("text-anchor", "middle")
      .text(function (d) { return d.data.floor; });
});
</script>
</body>
</html>

data.csv

age,population
<5,2704659
5-13,4499890
14-17,2159981
18-24,3853788
25-44,14106543
45-64,8819342
≥65,612463

data.json

{"data":[
    {"ap": [
        {"floorratio": [
            {"floor":"Basement", "ratio": 0.20},
            {"floor":"Ground", "ratio": 0.20},
            {"floor":"First Floor", "ratio": 0.15},
            {"floor":"Second Floor", "ratio": 0.20},
            {"floor":"Third Floor", "ratio": 0.25}
        ]}
    ]},
    {"ap": [
        {"floorratio": [
            {"floor":"Basement", "ratio": 0.10},
            {"floor":"Ground", "ratio": 0.30},
            {"floor":"First Floor", "ratio": 0.10},
            {"floor":"Second Floor", "ratio": 0.15},
            {"floor":"Third Floor", "ratio": 0.35}
        ]}
    ]}
]}