D3 Examples - gapminder scatterplot live demo

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<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
  </style>
</head>
​
<body>
  <script>
    var svg = d3.select("body").append("svg")
      .attr("width", 960)
      .attr("height", 500)
​
    d3.csv("gapminder_avg.csv", function(data){
      
      data.forEach(function(d) {
        
        d.population = +d.population;
        d.lifeexp = +d.lifeexp;
        d.gdp = +d.gdp;
        
      });
      
      var filteredData = data
            .sort(function(a,b) {
            return a.population < b.population;
          })
      
      console.log(filteredData);
      
      var xScale = d3.scaleLinear()
          .domain([0,40000])
        .range([100,800]);
      var yScale = d3.scaleLinear()
          .domain([30,d3.max(
            filteredData,
            function(d) {
                return d.lifeexp;
            })
                ])
        .range([400,100]);
      var rScale = d3.scaleSqrt()
        .domain([0,1000000000])
        .range([0,50])
      var colorScale = d3.scaleOrdinal(
        d3.schemeCategory10
      );
      
      var svgElements = svg.selectAll("g")
            .data(filteredData)
        .enter()
            .append("g");
      
      svgElements
            .append("circle")
            .attr("cy", function(d) {return yScale(d.lifeexp);})
            .attr("cx", function(d) {return xScale(d.gdp);})
                    .attr("r", function(d) {return rScale(d.population);})
          .attr("opacity",0.8)
            .attr("fill",function(d) {
            return colorScale(d.region);
      })
​
      var leftAxis = d3.axisLeft(yScale);
      var bottomAxis = d3.axisBottom(xScale);
​
      svg.append("g")
          .attr("transform", "translate(100,0)")
          .call(leftAxis);
​
      svg.append("g")
          .attr("transform", "translate(0,400)")
          .call(bottomAxis);
     
    })
​
  </script>
</body>
​
    