D3 Examples - Unemployment transition

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<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width">
    <script src="https://d3js.org/d3.v4.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/d3-legend/2.24.0/d3-legend.min.js"></script>
    <title>Gini Index</title>
    <style>
      #plot{
        position: fixed;
        left: 0px;
        right: 0px;
        top: 0px;
        bottom: 0px;
      }
      body {
        margin: 0px;
      }
      .domain {
        display: none;
      }
      .tick line {
        stroke: #000000;
      }
      .tick text, .legendCells text {
        fill: #000000;
        font-size: 8pt;
        font-family: sans-serif;
        
      }
      .axis-label, .legend-label {
        fill: #635F5D;
        font-size: 16pt;
        font-family: sans-serif;
      }
    </style>
  </head>
  <body>
    <div id = "plot"></div>
    <script>
       
      const viewplot = document.getElementById("plot");
      const svg = d3.select(viewplot).append('svg');
      const xValue = d => d.Investment;
      const xLabel = 'Investment';
      const yValue = d => d.Unemployment;
      const yLabel = 'Unemployment';
      const colorValue = d => d.Country;
      const colorLabel = 'Country';
      const margin = { left: 170, right: 300, top: 21, bottom: 120
                     };
 
      var g = svg.append('g');
      var dataG = g.append('g');
     
      var xAxisG = g.append('g');        
      var yAxisG = g.append('g');
      var xText = xAxisG.append('text').attr('class', 'axis-label');
      var yText = yAxisG.append('text').attr('class', 'axis-label');
            const colorLegendG = g.append('g');
      
      colorLegendG.append('text')
            .attr('class', 'legend-label')
            .attr('x', -5)
            .attr('y', -30)
            .text(colorLabel);
     
      const colorScale = d3.scaleOrdinal()
            .range(d3.schemeCategory10);
      const colorLegend = d3.legendColor()
            .scale(colorScale)
            .shape('circle')
                .shapeRadius(5)
                ;
      
        
​
      function redraw() {
        const width = viewplot.clientWidth;
        const height = viewplot.clientHeight;
        
        const innerWidth = width - margin.left - margin.right;
        const innerHeight = height - margin.top - margin.bottom;
        
        svg.attr("width", width)
           .attr("height", height);
        
        g.attr('transform', `translate(${margin.left},${margin.top})`);
        
        xAxisG.attr('transform', `translate(0, ${innerHeight})`);
​
        xText.attr('x', innerWidth / 2)
            .attr('y', 60)
            .text(xLabel);
​
        yText.attr('x', -innerHeight / 2)
                .attr('y', -60)
                .attr('transform', `rotate(-90)`)
            .style('text-anchor', 'middle')
            .text(yLabel);
        
        colorLegendG.attr('transform', `translate(${innerWidth + 50},${innerHeight -(innerHeight)})`);
​
        const xScale = d3.scaleLinear();
        const yScale = d3.scaleLinear();
​
        const xAxis = d3.axisBottom()
        .scale(xScale)
        .tickPadding(15)
        .tickSize(-innerHeight)
        .tickFormat(d3.format("d"));
                
        const yAxis = d3.axisLeft()
        .scale(yScale)
        .ticks(10)
        .tickPadding(15)
        .tickSize(-innerWidth);
​
      const row = d => {
        d.petalLength = +d.petalLength;
        d.petalWidth = +d.petalWidth;
        d.sepalLength = +d.sepalLength;
        d.sepalWidth = +d.sepalWidth;
        return d;
      };
​
      d3.csv('dataviz_cleaned_2.csv', row, data => {
        xScale
          .domain(d3.extent(data, xValue))
          .range([0, innerWidth])
          .nice();
​
        yScale
          .domain(d3.extent(data, yValue))
          .range([innerHeight, 0])
          .nice();
​
        const circles = dataG.selectAll('circle').data(data)
        circles.exit().remove();
        
        circles.enter().append('circle')
                .merge(circles)
            .attr('cx', d => xScale(xValue(d)))
            .attr('cy', d => yScale(yValue(d)))
            .attr('fill', d => colorScale(colorValue(d)))
            .attr('fill-opacity', 0.6)
            .attr('r', (width+height)/250);
​
        xAxisG.call(xAxis);
        yAxisG.call(yAxis);
        colorLegendG.call(colorLegend)
          .selectAll('.cell text') 
          .attr('dy', '0.01em');
      });
      }
​
      redraw();
      window.addEventListener("resize", redraw);
    </script>
  </body>
</html>
​
    