vue中使用echarts，数据更新后无法重新绘制图表？

      getTransformerSubstation3 () {
        // this.myChart3.clear()
        this.myChart3 = this.$echarts.init(document.getElementById('oneChart3'))
        api
          .getTransformerSubstation3(this.bdzparams)
          .then(data => {

            this.transformerSubstationList3 = data
            let option = {
              yAxis: {
                type: 'category',
                data: this.transformerSubstationList3.data.Asix,
              },
              xAxis: {
                type: 'value',
              },
              series: [
                {
                  data: this.transformerSubstationList3.data.data0,
                  type: 'bar',
                  itemStyle: {
                    normal: {
                      color: '#32b16c',
                      label: {
                        show: true,
                        position: 'right',
                        textStyle: {
                          color: 'black',
                          fontSize: 10,
                        },
                      },
                    },
                  },
                  barWidth: 20,
                },
              ],
              grid: {
                x: '3%',
                y: '20%',
                bottom: '3%',
                containLabel: true,
              },
      
                },
              },
            }
            this.myChart3.setOption(option)
          })
      },

我之前也遇到这个问题了，我的解决办法是：
1.先清空所有数据
this.lineOption.legend.data = []
this.lineOption.xAxis.data = []
for (let j in this.lineOption.series) {
this.lineOption.series[j].data = []
this.lineOption.series[j].name = ''
}
2.再赋值
this.lineOption.legend.data.push(this.options[i].children[j].name)
this.lineOption.xAxis.data.push(yearStr.toString() + '-' + monthStr + '-' + dayStr)
this.lineOption.series[j] = { // 初始化
name: name,
type: 'line',
yAxisIndex: 0,
showAllSymbol: true,
data: seriesdata
}

注意每一项必须有值，若接口返回空，则赋值为0

this.myChart3是undefined或者它没有这个方法

数据修改了，只要再调用setOption方法即可，例如：
$('#table_id_example').dataTable({
"aaSorting": []
});
var myChart = echarts.init(document.getElementById('chart'));
var option = {xxxxxxxx} // 这里设置你的表格类型、表格数据那些
myChart.setOption(option);

// 如果修改了数据，那么修改 option对象里的设置的表格数据
option = {xxxxxxxxxxxxxxx}
myChart.setOption(option); // 再次调用即可

这个是我的做法，我的功能是点击年份，查询该年份下的所有月份的数据，将图表重绘。
myChart是我点击的那个图表同时也是重绘的图表

myChart.on('click',function(){
        json_data="后台方法返回的数据";
        myChart.setOption({
                    series: [{
                        data: json_data.data
                    }],
                    title:{
                        text: json_data.data_title
                    }
            });
    })