why633630 commented on issue #9028: 
用dataset这种方式渲染pie图时,如果name的值为数字,value会无效,渲染时用的是name的值
URL: 
https://github.com/apache/incubator-echarts/issues/9028#issuecomment-419759781
 
 
   多谢,如果dataset是这种结构
   ```
   option = {
       legend: {},
       tooltip: {},
       dataset: {
           dimension:['name','value'],
           source: [
               {name:'10', value:52.2},
               {name:'20', value:52.2},
               {name:'30', value:52.2},
               {name:'40', value:52.2},
               {name:'50', value:52.2}
           ]
       },
       xAxis: {type: 'category'},
       yAxis: {},
       series: [
           {type: 'pie'}
       ]
   };
   ```
   source明确的指定了name和value,是不是echarts也是通过猜测识别的(如果不指定encode时)?

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