JSFiddle - React, Tailwind, and code Playground

by Chetan Hanumantha

CSS

body {
  font: 10px sans-serif;
}

.arc path {
  stroke: #fff;
}

JavaScript

var data = [
    {age: '<5', population:4523, area: 345, percent:7},
    {age: '5-15', population:12523, area: 585, percent:37},
    {age: '16-30', population:7523, area: 125, percent:17},
    {age: '31-60', population:1453, area: 645, percent:27},
    {age: '>=66', population:3423, area: 235, percent:12}
]


//http://bl.ocks.org/mbostock/3887193
var width = 600,
    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(radius - 70);

var pie = d3.layout.pie()
    .sort(null)
    .value(function(d) { return d.population; });
	
var arcArea = d3.svg.arc()
    .outerRadius(radius - 75)
    .innerRadius(radius - 120);
	
var pieArea = d3.layout.pie()
    .sort(null)
    .value(function(d) { return d.area; });

	
var arcPercent = d3.svg.arc()
    .outerRadius(radius - 125)
    .innerRadius(0);
	
var piePercent = d3.layout.pie()
    .sort(null)
    .value(function(d) { return d.percent; });
	
var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height)
  .append("g")
    .attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");

//d3.csv("data.csv", function(error, data) {

  data.forEach(function(d) {
    d.population = +d.population;
  });

  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; 
	  });
	  
	  
	  
  var gArea = svg.selectAll(".arcArea")
      .data(pieArea(data))
    .enter().append("g")
      .attr("class", "arc");

 ...