Standalone Bar Chart by curran

index.html

<!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='//fonts.googleapis.com/css?family=Poiret+One' rel='stylesheet' type='text/css'>
    <style>
    
      .axis text {
        font-family: 'Poiret One', cursive;
        font-size: 20pt;
      }
      .axis .label {
        font-size: 32pt;
      }

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

    </style>
  </head>
  <body>
    <script>

      var outerWidth = 960;
      var outerHeight = 500;
      var margin = { left: 160, top: 0, right: 0, bottom: 80 };
      var barPadding = 0.2;

      var xColumn = "population";
      var yColumn = "name";
      var xAxisLabelText = "Population";
      var xAxisLabelOffset = 70;

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

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

      var xAxis = d3.svg.axis().scale(xScale).orient("bottom")
        .ticks(5)                   // Use approximately 5 ticks marks.
        .tickFormat(d3.format("s")) // Use intelligent abbreviations, e.g. 5M for 5 Million
        .outerTickSize(0);          // Turn off the marks at the end of the axis.
      var yAxis = d3.svg.axis().scale(yScale).orient("left")
        .outerTickSize(0);          // Turn off the marks at the end of the axis.

      function render(data){

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

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

        var bars = g.selectAll("rect").data(data);
        bars.enter().append("rect")
          .attr("height", yScale.rangeBand());
        bars
          .attr("x", 0)
          .attr("y",     function (d){ return yScale(d[yColumn]); })
          .attr("width", function (d){ return xScale(d[xColumn]); });
        bars.exit().remove();
      }

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

      d3.csv("geonames_cities_top3.csv", type, render);

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

geonames_cities_top3.csv

name,latitude,longitude,population
Shanghai,31.22222,121.45806,22315474
Buenos Aires,-34.61315,-58.37723,13076300
Mumbai,19.07283,72.88261,12691836