How to achieve cross-chart interaction linkage effects in Vue and ECharts4Taro3

How to achieve cross-chart interaction linkage effects in Vue and ECharts4Taro3

In recent years, data visualization has become more and more widely used in various fields, and ECharts is a powerful and easy-to-use data visualization The library has been favored by the majority of developers. In the combined use of Vue and ECharts4Taro3, how to achieve cross-chart interaction linkage effects has become a common requirement. This article will introduce how to achieve cross-chart data interaction through Vue and ECharts4Taro3.

First, we need to set up a basic environment in Vue, create two ECharts instances, and embed them into Taro's page.

// 在Vue的组件中引入ECharts和ECharts的主题
import echarts from 'echarts'
import 'echarts/theme/macarons'

export default {
  data() {
    return {
      chart1: null,
      chart2: null,
      selectedData: null
    }
  },
  mounted() {
    // 创建并初始化图表
    this.chart1 = echarts.init(document.getElementById('chart1'), 'macarons')
    this.chart2 = echarts.init(document.getElementById('chart2'), 'macarons')
  },
  methods: {
    // 设置图表的数据
    setData(data) {
      // 在这里可以根据具体需求设置图表的数据
      this.chart1.setOption({
        series: [...]
      })
      this.chart2.setOption({
        series: [...]
      })
    },
    // 监听图表的点击事件
    bindClickEvent() {
      this.chart1.on('click', (params) => {
        // 处理点击事件的数据
        this.selectedData = params.data
        // 在这里可以根据点击的数据更新其他图表的数据
        this.chart2.setOption({
          series: [...]
        })
      })
    }
  }
}

Next, we introduce the Vue component into the Taro page and use it.

import { Component } from 'react'
import { View } from '@tarojs/components'
import VueComponent from './VueComponent'

class Index extends Component {
  componentDidMount() {
    const vueComponent = new VueComponent()
    vueComponent.setData(...)
    vueComponent.bindClickEvent()
  }

  render() {
    return (
      <View>
        <vue-component></vue-component>
      </View>
    )
  }
}

export default Index

In the above code, we created an instance of the Vue component in the componentDidMount life cycle of the Taro page and called the setData method to pass the data to the chart . Then the bindClickEvent method is called, which listens to the click event of the chart and updates the data of other charts based on the clicked data. Finally, the Vue component is rendered to the page in the render function of the Taro page.

Through the above code examples, we successfully implemented the linkage effect of cross-chart interaction in Vue and ECharts4Taro3. Of course, the specific implementation method still needs to be adjusted and modified according to specific needs. I hope this article will be helpful to everyone in the process of using Vue and ECharts4Taro3.

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