created by http://livecoding.io

README.md

View this code at http://livecoding.io/5004662

options.json

{
    "libraries": [
        "d3"
    ],
    "mode": "javascript",
    "layout": "fullscreen mode (vertical)",
    "resolution": "reset"
}

water.css

body {
  font: 10px sans-serif;
}

.arc path {
  stroke: #fff;
}

/*.arc path:hover {
stroke: black;
  stroke-width: 2px;
}*/

water.html

<svg></svg>

water.js

var raw_data = [
  { age: '<5', 		population: 2704659 },
  { age: '5-13', 	population: 4499890 },
  { age: '14-17', 	population: 2159981 },
  { age: '18-24', 	population: 3853788 },
  { age: '25-44', 	population: 14106543 },
  { age: '45-64', 	population: 8819342 },
  { age: '≥65', 	population: 61246 }
]
    
var width = 550,
    height = 500,
    radius = Math.min(width, height) / 2;

var color = d3.scale.ordinal()
    .range(["#98abc5", "#8a89a6", "#7b6888", "#6b486b", "#a05d56", "#D0753C", "#ff8c00"]);

var arc = d3.svg.arc()
    .outerRadius(radius - 10)
    .innerRadius(radius - 70);

var pie = d3.layout.pie()
    .sort(null)
    .value(function(d) { return d.population; });

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

var pie_data = pie(raw_data);

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

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

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.age; 
      });