G2 - The Grammar Of Graphics

极坐标 / 日冕图

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源码

<!DOCTYPE html>
  <html>
    <head>
      <meta charset="utf-8">
      <title>日冕图</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>
var Frame = G2.Frame;
$.getJSON('../../static/data/page-views.json',function (data) {
  var chart = new G2.Chart({
    id: 'c1',
    width: 1000,
    height: 500,
    plotCfg: {
      margin: [60, 100]
    }
  });

chart.source(data, {
    views: {
      max: 25,
      min: 0,
      nice: false
    },
    hour: {
      ticks: ['0', '3', '6', '9', '12', '15', '18', '21']
    }
  });
  chart.coord('polar', {
    inner: 0.35
  });
  chart.axis('hour', {
    grid: null,
    formatter: function(val) {
      if (val * 1 >= 12) {
        return val + ' pm';
      } else {
        return val + ' am';
      }
    }
  });
  chart.axis('views', {
    tickLine: null,
    line: null,
    grid: {
      line: {
        lineDash: [0, 0]
      }
    }
  });
  chart.legend(false);
  chart.area().position('hour*views').color('page', ['#cd57a4', '#b236a3', '#fa6f7f', '#fa7c3b', '#e96b6b']).shape('smooth').opacity(0.15);
  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>
var Frame = G2.Frame;
$.getJSON('../../static/data/page-views.json',function (data) {
  var chart = new G2.Chart({
    id: 'c1',
    width: 1000,
    height: 500,
    plotCfg: {
      margin: [60, 100]
    }
  });

</body>
  </html>

日冕图

极坐标下的区域图，展示一天内各个时间段内的数据变化，主要用于时变数据的可视化。