Version

5.5

Link to Minimal Reproduction

Steps to Reproduce

initChart() {
  let that = this;
  //初始化X坐标轴
  // let xValue = [];
  // for (let i = 100; i < 900; i++) {
  //   xValue.push(i);
  // }
  const xValue = ['6', '6.5', '7', '7.5', '8', '8.5', '9', '9.5', '10'];
  const yValue = ['6', '6.5', '7', '7.5', '8', '8.5', '9', '9.5', '10'];
  //初始化Y坐标轴
  // let yValue = [];
  // for (let i = -26; i < 27; i++) {
  //   yValue.push(i);
  // }

  let option = {
    xAxis: {
      type: 'category',
      data: xValue,
      splitArea: {
        show: true //斑马纹展示
      }
    },
    yAxis: {
      type: 'category',
      data: yValue,
      splitArea: {
        show: true //斑马纹展示
      }
    },
    title: {
      top: 30,
      left: 'center',
      text: 'Daily Step Count'
    },
    tooltip: {},
    visualMap: {
      min: 0,
      max: 10000,
      type: 'piecewise',
      orient: 'horizontal',
      left: 'center',
      top: 65
    },

    series: {
      type: 'heatmap',
      name: 'Znys Map',
      data: that.seriesData,
    }
  };

  option && that.myChart.setOption(option);
},

Current Behavior

this.myChart = echarts.init(chartDom);
this.initChart();
let i = 1, j = 0
let data=[];
// this.timer = setInterval(function () {
for (let j = 0; j < 10; j++) {
  let dataItem = [];
  dataItem.push(j);
  dataItem.push(i);
  dataItem.push(8);
  dataItem.push(i * 2);
  // that.seriesData.push(dataItem);
  data.push(dataItem);
  // this.myChart.setOption({
  //       series: [{
  //         // 假设是某个系列
  //         data: data // 这里替换为你要添加的数据
  //       }]
  //     });
  this.myChart.appendData({
    seriesIndex: 0,
    data: data
  });
  console.log('size is:'+this.seriesData.length)
}

Expected Behavior

appendData有效

Environment

- OS:
- Browser:
- Framework:

Any additional comments?

No response