D3 Examples - Global Land Temperature

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<!DOCTYPE html>
<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>Temperature Visualization</title>
    <style>
      .path-label {
       fill: #8E8883;
        font-size: 20pt;
        font-family: sans-serif;
      }
      body {
        margin: 0px;
      }
      .domain {
        display: none;
      }
      .tick line {
        stroke: #C0C0BB;
      }
      .tick text {
        fill: #8E8883;
        font-size: 20pt;
        font-family: sans-serif;
      }
      .axis-label {
        fill: #635F5D;
        font-size: 40pt;
        font-family: sans-serif;
      }
      .legend rect {
        fill:white;
        stroke:black;
        opacity:0.8;
      }
​
    </style>
  </head>
  <body>
    <svg width="960" height="500"></svg>
    <script>
      
      const xValue = d => d.dt;
      const xLabel = 'Time';
      const yValue = d => d.LandAverageTemperature;
      const yLabel = 'Temperature';
      const margin = { left: 120, right: 30, top: 20, bottom: 120 };
​
      const svg = d3.select('svg');
      const width = svg.attr('width');
      const height = svg.attr('height');
      const innerWidth = width - margin.left - margin.right;
      const innerHeight = height - margin.top - margin.bottom;
​
      const g = svg.append('g')
          .attr('transform', `translate(${margin.left},${margin.top})`);
      const xAxisG = g.append('g')
          .attr('transform', `translate(0, ${innerHeight})`);
      const yAxisG = g.append('g');
​
      xAxisG.append('text')
          .attr('class', 'axis-label')
          .attr('x', innerWidth / 2)
          .attr('y', 100)
          .text(xLabel);
​
      yAxisG.append('text')
          .attr('class', 'axis-label')
          .attr('x', -innerHeight / 2)
          .attr('y', -60)
          .attr('transform', `rotate(-90)`)
          .style('text-anchor', 'middle')
          .text(yLabel);
​
      const xScale = d3.scaleTime();
      const yScale = d3.scaleLinear();
​
      const xAxis = d3.axisBottom()
        .scale(xScale)
        .tickPadding(15)
        .ticks(5)
        .tickSize(-innerHeight);
​
      const yTicks = 5;
      const yAxis = d3.axisLeft()
        .scale(yScale)
        .ticks(yTicks)
        .tickPadding(15)
        .tickSize(-innerWidth);
​
      const line = d3.line()
        .x(d => xScale(xValue(d)))
        .y(d => yScale(yValue(d)))
        .curve(d3.curveBasis);
​
      const row = d => {
        d.dt = new Date(d.dt);
        d.LandAverageTemperature = +d.LandAverageTemperature;
        return d;
        
      };
​
      d3.csv('GlobalTemperatures.csv', row, data => {
        
        winter = data.filter(d => {
          return d.dt.getMonth() == new Date('2000-01-01').getMonth();
        });
        summer = data.filter(d => d.dt.getMonth() == new Date('2000-07-07').getMonth());
​
        xScale
          .domain(d3.extent(data, xValue))
          .range([0, innerWidth]);
​
        yScale
          .domain(d3.extent(data, yValue))
          .range([innerHeight, 0])
          .nice(yTicks);
​
        
        g.append('path')
            .attr('fill', 'none')
            .attr('stroke', 'red')
            .attr('stroke-width', 4)
            .attr('d', line(summer))
​
                g.append('text')
          .attr('class', 'path-label')
          .attr('x', innerWidth / 2)
          .attr('y', 60)
          .text('July')
             
        
        g.append('path')
            .attr('fill', 'none')
            .attr('stroke', 'steelblue')
            .attr('stroke-width', 4)
            .attr('d', line(winter));
​
         g.append('text')
          .attr('class', 'path-label')
          .attr('x', innerWidth / 2 - 15)
          .attr('y', 230)
          .text('January')
                
        xAxisG.call(xAxis);
        yAxisG.call(yAxis);
        
      });
    </script>
  </body>
</html>
​
    