Ext.js - 饼图

此图表用于以饼状图格式表示数据。这是一个极坐标图。

语法

下面是一个简单的语法。

Ext.create('Ext.chart.PolarChart', {
   series: [{
      Type: 'pie'
      ..
   }]
   render and other properties.
});

示例

下面是一个简单的示例，展示了饼图的使用方法。

在线演示

<!DOCTYPE html>
<html>
   <head>
      <link href = "https://cdnjs.cloudflare.com/ajax/libs/extjs/6.0.0/classic/theme-classic/resources/theme-classic-all.css" 
         rel = "stylesheet" />
      <script type = "text/javascript" 
         src = "https://cdnjs.cloudflare.com/ajax/libs/extjs/6.0.0/ext-all.js"></script>
      <script type = "text/javascript" 
         src = "https://cdnjs.cloudflare.com/ajax/libs/extjs/6.0.0/packages/charts/classic/charts.js"></script>
      <link href = "https://cdnjs.cloudflare.com/ajax/libs/extjs/6.0.0/packages/charts/classic/classic/resources/charts-all.css" 
         rel = "stylesheet" />
      
      <script type = "text/javascript">
         Ext.onReady(function() {
            Ext.create('Ext.chart.PolarChart', {
               renderTo: document.body,
               width: 600,
               height: 300,
               
               store: {
                  fields: ['name', 'g1'],
                  data: [
                     {"name": "Item-0", "g1": 57},
                     {"name": "Item-1", "g1": 45},
                     {"name": "Item-2", "g1": 67}
                  ]
               },
               
               //configure the legend.
               legend: {
                  docked: 'bottom'
               },

               //describe the actual pie series.
               series: [{
                  type: 'pie',
                  xField: 'g1',
                  label: {
                     field: 'name'
                  },
                  donut: 30   // increase or decrease for increasing or decreasing donut area in middle.
               }]
            });
         });
      </script>
   </head>
   
   <body>
   </body>
</html>

上述程序将产生以下结果 −

extjs_components.htm

打印页面

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