Vue -- 数据更新echarts表格不更新问题

项目使用的是 vue-element-admin

<template>
  <div>
    <div ref="line" :class="className" :style="{height:height,width:width}" />
  </div>
</template>
<script>
import echarts from 'echarts'
require('echarts/theme/macarons') // echarts theme
import resize from '../../mixins/resize'
export default {
  mixins: [resize],
  props: {
    className: {
      type: String,
      default: "chart"
    },
    width: {
      type: String,
      default: "100%"
    },
    height: {
      type: String,
      default: "350px"
    },
    autoResize: {
      type: Boolean,
      default: true
    },
    lineChartData: {
      type: Object,
      required: true
    }
  },
  data() {
    return {
      chart: null
    };
  },
  mounted() {
    this.$nextTick(() => {
      this.initChart()
    })
  },
  watch: {
    lineChartData: {
      deep: true,
      handler(val) {
        this.setOptions(val);
      }
    }
  },
  beforeDestroy() {
    if (!this.chart) {
      return;
    }
    this.chart.dispose();
    this.chart = null;
  },
  methods: {
    initChart() {
      this.chart = echarts.init(this.$refs.line, 'macarons')
      // this.chart = echarts.init(this.$el, "macarons");
      this.setOptions(this.lineChartData)
    },
    setOptions({ data, value, name } = {}) {
      var max = value && value.length ? null : 100;
      this.chart.setOption({
        xAxis: {
          data: data
          // boundaryGap: false,
          // axisTick: {
          //   show: false
          // }
        },
        grid: {
          left: 10,
          right: '3%',
          bottom: 20,
          top: 30,
          containLabel: true
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross'
          },
          padding: [5, 10]
        },
         yAxis: {
          max: max,
          minInterval: 1,
          axisTick: {
            show: false
          }
        },
        legend: {
          data: [name]
        },
        series: [{
          name: name,
          itemStyle: {
            normal: {
              color: '#FF005A',
              lineStyle: {
                color: '#FF005A',
                width: 2
              }
            }
          },
          smooth: true,
          type: 'line',
          data: value,
          animationDuration: 2800,
          animationEasing: 'cubicInOut'
        }]
      })
    }
  }
}
</script>

有些数据我的项目是一起给的，切换自己做的处理，如果不能直接赋值就使用this.$set设置data值

formatTab() {
      // this.lineChartData.name = "收藏数";
      this.$set(this.lineChartData, 'name', "收藏数" )
      var name = "totalCollectNum";
      switch (this.form.radio2) {
        case "1":
          // this.lineChartData.name = "收藏数";
          this.$set(this.lineChartData, 'name', "收藏数" )
          name = "totalCollectNum";
          break;
        case "2":
          // this.lineChartData.name = "点赞数";
          this.$set(this.lineChartData, 'name', "点赞数" )
          name = "totalLikeNum";
          break;
        case "3":
          // this.lineChartData.name = "阅读数";
          this.$set(this.lineChartData, 'name', "阅读数" )
          name = "totalReadNum";
          break;
        default:
          // this.lineChartData.name = "收藏数";
          this.$set(this.lineChartData, 'name', "收藏数" )
          name = "totalCollectNum";
      }
      var value = [];
      var data = [];
      var tableData = this.list;
      for (var i = 0; i < tableData.length; i++) {
        // data.push( this.parseTime(new Date(tableData[i].recordDate), "{y}-{m}-{d}")) // 横坐标
        data.push(tableData[i].recordDate); // 横坐标
        value.push(tableData[i][name]);
      }
      // this.lineChartData.value = value;
      // this.lineChartData.data = data;
      this.$set(this.lineChartData, 'data', data )
      this.$set(this.lineChartData, 'value', value )
    },