解决echarts中饼图标签重叠的问题

var option = {
    tooltip: {
     trigger: "item",
     formatter: "{a} <br/>{b} : {c} ({d}%)"
    },
    legend: {
     //orient: "vertical",
     x: "0%",
     //y: "25%",
     //y: "5%",
     itemWidth: 14,
     itemHeight: 14,
     align: "left",
     data: xData,
     textStyle: {
      color: "#fff"
     }
    },
    series: [
     {
      name: "危险源状态",
      type: "pie",
      radius: ["25%", "45%"],
      center: ["50%", "60%"],
      avoidLabelOverlap: true,//对，就是这里avoidLabelOverlap
      label: {
       normal: {
        show: true,
        position: "center"
       },
       emphasis: {
        show: true,
        textStyle: {
         fontSize: "12",
         fontWeight: "bold"
        }
       }
      },
      labelLine: {
       normal: {
        show: true
       }
      },
      data: pieData
     }
    ]
   };

		// 基于准备好的dom，初始化echarts实例
      
        var colors = ['#0089FF','#B865DF',/*'#5ADF63','#FFDD00',*/'#224666', '#675bba'];
        // 指定图表的配置项和数据
        option = {
        		 /*grid:{
               y:'25%'},*/
        		 color: colors,
        /*		 title: {
         	    text: '各医院指标对比情况',
         	    left: 16,
         	    textStyle: {
         	      fontSize: 18,
         	      color:'#0089FF'
         	    }
         	  },*/
          tooltip: {
            trigger: 'axis',
            axisPointer: {
              type: 'cross',
              crossStyle: {
                color: '#999'
              }
            }
          },
       
          legend: {
            data:['组数','CMI'],
            x:'80%'
          },
          xAxis: [
            {
              type: 'category',
              data: arr,
              axisPointer: {
                type: 'shadow'
              },
              axisLine: {
                show: true,
                
              /*  lineStyle: {
                  color: '#05edfc'
                }*/
              },
              axisLabel: {
        	    	 show: true,
        	      /* color: '#fff',*/
                fontSize: 12,
                interval: 0, 
                formatter:function(value) 
                { 
                  return value; 
                }
                //fontWeight: 'bold'
        	    }
            },
            
          ],
          
          yAxis: [
          
            {
      	      type: 'value',
      	      name: '组数整体指标',
      	      position: 'left',
      	      splitLine:{show: true},
      	      axisLine: {
                show: false,
                
               /* lineStyle: {
                  color: '#E7E7E7'
                }*/
              },
      	      axisLabel: {
      	      	 show:true,
      	      	 showMinLabel:true,
                 showMaxLabel:true,
      	        formatter: '{value}'
      	      },
 
      	    },
      	    {
      	      type: 'value',
      	      name: 'CMI',
      	      position: 'right',
      	      
      	      splitLine:{show: true},
      	      axisLine: {
                show: false,
                
               /* lineStyle: {
                  color: '#E7E7E7'
                }*/
              },
      	      axisLabel: {
      	      	 show:true,
      	      	 showMinLabel:true,
                 showMaxLabel:true,
      	        formatter: '{value}'
      	      },
 
      	    },
       
         
          ],
          series: [
            {
              name:'组数',
              type:'bar',
              barWidth : 20,
              data:arr2,
              yAxisIndex: 0,
           /*   markPoint : {
                data : [
                  {type : 'max', name: '最大值'},
                  {type : 'min', name: '最小值'}
                ]
              }*/
    
            },
            {
              name:'CMI',
              type:'bar',
              barWidth : 20,
              data:arr3,
              yAxisIndex: 1,
            /*  markPoint : {
                data : [
                  {type : 'max', name: '最大值'},
                  {type : 'min', name: '最小值'}
                ]
              }*/
            }
          ]
        };