cow chartecharts 饼配置项内容和展示

            var centerText;
      var legendData = ['0-2月', '2-8月', '8-14月', '14-18月']
      var option
        var cowNum = [4421, 3421, 2000, 1000]
      var cowName = ['奶公犊', '普通犊牛', '架子牛', '育肥牛']
      var currentIndex = -1

      option = {
          title: {
              text: centerText,
              x: 'center',
              y: '47%',
              textStyle: {
                  fontWeight: 'normal',
                  fontSize: 22
              }
          },
          tooltip: {
              trigger: 'item',
              formatter: '{a} <br/>{b}: {c} ({d}%)'
          },
          legend: {
              orient: 'vertical',
              x: 'left',
              data: legendData
          },
          series: [{
              name: '访问来源',
              type: 'pie',
              selectedMode: 'single',
              radius: ['20%', '30%'],
              label: {
                  normal: {
                      position: 'inner'
                  }
              },
              labelLine: {
                  normal: {
                      show: false
                  }
              },
              data: [{
                  value: 35880113,
                  name: '0-2月'
              }, {
                  value: 37846064,
                  name: '2-8月'
              }, {
                  value: 41374640,
                  name: '8-14月'
              }, {
                  value: 108944238,
                  name: '14-18月'
              }]
          }, {
              name: '访问来源',
              type: 'pie',
              radius: ['40%', '55%'],
              label: {
                  normal: {
                      show: true,
                      position: 'outside',
                      formatter: '{c}元',
                      textStyle: {
                          fontSize: 12
                      }
                  },
                  emphasis: {
                      textStyle: {
                          fontSize: 16
                      }
                  }
              },
              data: [{
                  value: 108944238,
                  name: '0-2月'
              }, {
                  value: 81374640,
                  name: '2-8月'
              }, {
                  value: 41374640,
                  name: '8-14月'
              }, {
                  value: 78944238,
                  name: '14-18月'
              }]
          }]
      }



      setInterval(function() {
          if (typeof(option) === 'undefined') {
              return
          }

          var dataLen = option.series[0].data.length;
          // 取消之前高亮的图形
          myChart.dispatchAction({
              type: 'downplay',
              seriesIndex: 0,
              dataIndex: currentIndex
          });
          
         myChart.dispatchAction({
              type: 'downplay',
              seriesIndex: 1,
              dataIndex: currentIndex
          });
          

          currentIndex = (currentIndex + 1) % dataLen;

          centerText =  cowName[currentIndex] +'\n' + cowNum[currentIndex] + '头 \n'
              // 高亮当前图形
         myChart.setOption(option, true)

          myChart.dispatchAction({
              type: 'highlight',
              seriesIndex: 0,
              dataIndex: currentIndex
          });

          myChart.dispatchAction({
              type: 'highlight',
              seriesIndex: 1,
              dataIndex: currentIndex
          });

      }, 1000);