G2 - 日冕图

             <!DOCTYPE html>
    <html>
      <head>
        <meta charset="utf-8">
        <title>日冕图</title>
<script src="https://a.alipayobjects.com/jquery/jquery/1.11.1/jquery.js"></script>
<script src="https://gw.alipayobjects.com/as/g/datavis/g2/2.3.13/index.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',
    forceFit: true,
    height: 450,
    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>
          
        

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。

<!DOCTYPE html>
    <html>
      <head>
        <meta charset="utf-8">
        <title>日冕图</title>
        <script src="https://unpkg.com/react@15/dist/react.min.js"></script>
        <script src="https://unpkg.com/react-dom@15/dist/react-dom.min.js"></script>
        <script src="https://a.alipayobjects.com/g/datavis/g2/2.3.13/g2.js"></script>
        <script src="https://unpkg.com/g2-react@1.2.0/dist/index.js"></script>
        <script src="https://cdn.bootcss.com/babel-core/5.8.38/browser.min.js"></script>
        <script src="https://unpkg.com/axios/dist/axios.min.js"></script>
      </head>
      <body>
          <div id="c1"></div>
 <script type="text/babel">
    const Chart = createG2(chart => {
      chart.col('views', {
        max: 25,
        min: 0,
        nice: false
      });
      chart.col('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();
    });

const MyComponent = React.createClass({
      getInitialState() {
        return {
          data: [],
          forceFit: true,
          height: 450,
          plotCfg: {
            margin: [60, 100]
          },
        };
      },
      componentDidMount: function() {
        const self = this;
        axios.get('../../../static/data/page-views.json').then(function (response) {
          self.setState({
            data: response.data
          });
        }).catch(function (error) {
          console.log(error);
        });
      },
      render() {
          return (
            <div>
              <Chart
                data={this.state.data}
                width={this.state.width}
                height={this.state.height}
                plotCfg={this.state.plotCfg}
                forceFit={this.state.forceFit} />
            </div>
          );
      },
    });
    ReactDOM.render(<MyComponent />, document.getElementById('c1'));
</script>

</body>
    </html>