public/examples/ts/bar-drilldown.ts

/*
title: Bar Chart Drilldown Animation.
category: bar
titleCN: 柱状图下钻动画
difficulty: 5
*/

interface DataItem {
  value: number;
  groupId: string;
}
option = {
  xAxis: {
    data: ['Animals', 'Fruits', 'Cars']
  },
  yAxis: {},
  dataGroupId: '',
  animationDurationUpdate: 500,
  series: {
    type: 'bar',
    id: 'sales',
    data: [
      {
        value: 5,
        groupId: 'animals'
      },
      {
        value: 2,
        groupId: 'fruits'
      },
      {
        value: 4,
        groupId: 'cars'
      }
    ] as DataItem[],
    universalTransition: {
      enabled: true,
      divideShape: 'clone'
    }
  }
};

const drilldownData = [
  {
    dataGroupId: 'animals',
    data: [
      ['Cats', 4],
      ['Dogs', 2],
      ['Cows', 1],
      ['Sheep', 2],
      ['Pigs', 1]
    ]
  },
  {
    dataGroupId: 'fruits',
    data: [
      ['Apples', 4],
      ['Oranges', 2]
    ]
  },
  {
    dataGroupId: 'cars',
    data: [
      ['Toyota', 4],
      ['Opel', 2],
      ['Volkswagen', 2]
    ]
  }
];

myChart.on('click', function (event) {
  if (event.data) {
    var subData = drilldownData.find(function (data) {
      return data.dataGroupId === (event.data as DataItem).groupId;
    });
    if (!subData) {
      return;
    }
    myChart.setOption<echarts.EChartsOption>({
      xAxis: {
        data: subData.data.map(function (item) {
          return item[0];
        })
      },
      series: {
        type: 'bar',
        id: 'sales',
        dataGroupId: subData.dataGroupId,
        data: subData.data.map(function (item) {
          return item[1];
        }),
        universalTransition: {
          enabled: true,
          divideShape: 'clone'
        }
      },
      graphic: [
        {
          type: 'text',
          left: 50,
          top: 20,
          style: {
            text: 'Back',
            fontSize: 18
          },
          onclick: function () {
            myChart.setOption<echarts.EChartsOption>(option);
          }
        }
      ]
    });
  }
});
export {};