G2 - The Grammar Of Graphics

热力或色块图 / heatmap canvas

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源码

<!DOCTYPE html>
  <html>
    <head>
      <meta charset="utf-8">
      <title>heatmap canvas</title>
      <link rel="stylesheet" href="https://os.alipayobjects.com/s/prod/g2/static/doc-b57e62881a0344ecde9e68c4ce312143.css"/>
      
      <script src="https://a.alipayobjects.com/jquery/jquery/1.11.1/jquery.js"></script>

<script src="https://a.alipayobjects.com/g/datavis/g2/2.2.1/g2.js"></script>
    </head>
    <body>
      <div id="c1"></div>
      
      <script>
$.getJSON('../../static/data/heatmap-temperature.json', function(data) {
  var monthMap = {
    '2013-01-01': 'January',
    '2013-02-01': 'February',
    '2013-03-01': 'March',
    '2013-04-01': 'April',
    '2013-05-01': 'May',
    '2013-06-01': 'June',
    '2013-07-01': 'July',
    '2013-08-01': 'August',
    '2013-09-01': 'September',
    '2013-10-01': 'October',
    '2013-11-01': 'November',
    '2013-12-01': 'December'
  };
  var chart = new G2.Chart({
    id: 'c1',
    width: 1000,
    height: 500,
    plotCfg: {
      margin: [80]
    }
  });

chart.source(data, {
    Date: {
      type: 'cat'
    },
    Time: {
      type: 'cat'
    }
  });
  chart.axis('Date', {
    formatter: function(val) {
      return monthMap[val];
    },
    labels: {
      label: {
        rotate: -86
      }
    }
  });
  chart.polygon().position('Date*Time').color('Temperature', '#3060cf-#fffbbc-#c4463a');
  chart.render();
});
</script>

</body>
  </html>

<script src="https://a.alipayobjects.com/g/datavis/g2/2.2.1/g2.js"></script>
      <script>
        G2.Global.setTheme('dark');
      </script>
    </head>
    <body>
      <div id="c1"></div>
      <script>
$.getJSON('../../static/data/heatmap-temperature.json', function(data) {
  var monthMap = {
    '2013-01-01': 'January',
    '2013-02-01': 'February',
    '2013-03-01': 'March',
    '2013-04-01': 'April',
    '2013-05-01': 'May',
    '2013-06-01': 'June',
    '2013-07-01': 'July',
    '2013-08-01': 'August',
    '2013-09-01': 'September',
    '2013-10-01': 'October',
    '2013-11-01': 'November',
    '2013-12-01': 'December'
  };
  var chart = new G2.Chart({
    id: 'c1',
    width: 1000,
    height: 500,
    plotCfg: {
      margin: [80]
    }
  });

</body>
  </html>

数据摘自