World Population Area Chart

Area chart of world population over time. Data from the United Nations Population Estimates. This is example 40 from the screencast Splitting Charts.

Draws from d3 area chart example
Uses d3.svg.area

forked from curran's block: World Population Line Chart

MIT License

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>D3 Example</title>
    <script src="//cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
    <link href='https://fonts.googleapis.com/css?family=Open+Sans' rel='stylesheet' type='text/css'>
        
    <style>
      
      body {
        margin: 0px;
      }

.chart-area {
        fill: black;
      }
    
      .axis text {
        font-family: 'Open Sans', sans-serif;
        font-size: 12pt;
      }
      .axis .label {
        font-size: 18pt;
      }

.axis path, .axis line {
        fill: none;
        stroke: #000;
        shape-rendering: crispEdges;
      }

</style>
  </head>
  <body>
    <script>
    
      var outerWidth = 960;
      var outerHeight = 500;
      var margin = { left: 64, top: 3, right: 15, bottom: 56 };

var xColumn = "year";
      var yColumn = "population";

var xAxisLabelText = "Time";
      var xAxisLabelOffset = 48;

var yAxisLabelText = "World Population";
      var yAxisLabelOffset = 40;

var innerWidth  = outerWidth  - margin.left - margin.right;
      var innerHeight = outerHeight - margin.top  - margin.bottom;

var svg = d3.select("body").append("svg")
        .attr("width", outerWidth)
        .attr("height", outerHeight);
      var g = svg.append("g")
        .attr("transform", "translate(" + margin.left + "," + margin.top + ")");
      var path = g.append("path")
        .attr("class", "chart-area");

var xAxisG = g.append("g")
        .attr("class", "x axis")
        .attr("transform", "translate(0," + innerHeight + ")")
      var xAxisLabel = xAxisG.append("text")
        .style("text-anchor", "middle")
        .attr("transform", "translate(" + (innerWidth / 2) + "," + xAxisLabelOffset + ")")
        .attr("class", "label")
        .text(xAxisLabelText);

var yAxisG = g.append("g")
        .attr("class", "y axis");
      var yAxisLabel = yAxisG.append("text")
        .style("text-anchor", "middle")
        .attr("transform", "translate(-" + yAxisLabelOffset + "," + (innerHeight / 2) + ") rotate(-90)")
        .attr("class", "label")
        .text(yAxisLabelText);

var xScale = d3.time.scale().range([0, innerWidth]);
      var yScale = d3.scale.linear().range([innerHeight, 0]);

// Use a modified SI formatter that uses "B" for Billion.
      var siFormat = d3.format("s");
      var customTickFormat = function (d){
        return siFormat(d).replace("G", "B");
      };

var xAxis = d3.svg.axis().scale(xScale).orient("bottom")
        .ticks(12)
        .outerTickSize(0);
      var yAxis = d3.svg.axis().scale(yScale).orient("left")
        .ticks(10)
        .tickFormat(customTickFormat)
        .outerTickSize(0);

var area = d3.svg.area()
        .x(function(d) { return xScale(d[xColumn]); })
        .y0(innerHeight)
        .y1(function(d) { return yScale(d[yColumn]); });

function render(data){
        xScale.domain(d3.extent(data, function (d){ return d[xColumn]; }));
        yScale.domain([0, d3.max(data, function (d){ return d[yColumn]; })]);

xAxisG.call(xAxis);
        yAxisG.call(yAxis);

path.attr("d", area(data));
      }

function type(d){
        d.year = new Date(d.year);
        d.population = +d.population;
        return d;
      }

d3.csv("worldPopulationByYear.csv", type, render);

</script>
  </body>
</html>

https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js