【详细流程】vue+Element UI项目中使用echarts绘制圆环图 折线图 饼图 柱状图

在Vue项目中使用ECharts绘制圆环图、折线图、饼图和柱状图，首先需要安装ECharts：

npm install echarts --save

然后在Vue组件中引入ECharts，并初始化图表：

<template>
  <div>
    <div ref="circleChart" style="width: 400px; height: 400px;"></div>
    <div ref="lineChart" style="width: 600px; height: 400px;"></div>
    <div ref="pieChart" style="width: 400px; height: 400px;"></div>
    <div ref="barChart" style="width: 600px; height: 400px;"></div>
  </div>
</template>
 
<script>
import * as echarts from 'echarts';
 
export default {
  name: 'ChartComponent',
  mounted() {
    this.initCircleChart();
    this.initLineChart();
    this.initPieChart();
    this.initBarChart();
  },
  methods: {
    initCircleChart() {
      const chart = echarts.init(this.$refs.circleChart);
      const option = {
        series: [
          {
            type: 'pie',
            radius: ['40%', '70%'], // 圆环的内半径和外半径
            avoidLabelOverlap: false,
            label: { show: false },
            emphasis: { label: { show: true } },
            labelLine: { show: false },
            data: [
              { value: 1048, name: 'Search Engine' },
              { value: 735, name: 'Direct' },
              { value: 580, name: 'Email' },
              { value: 484, name: 'Union Ads' },
              { value: 300, name: 'Video Ads' }
            ]
          }
        ]
      };
      chart.setOption(option);
    },
    initLineChart() {
      const chart = echarts.init(this.$refs.lineChart);
      const option = {
        xAxis: {
          type: 'category',
          data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
        },
        yAxis: {
          type: 'value'
        },
        series: [
          {
            data: [820, 932, 901, 934, 1290, 1330, 1320],
            type: 'line'
          }
        ]
      };
      chart.setOption(option);
    },
    initPieChart() {
      const chart = echarts.init(this.$refs.pieChart);
      const option = {
        series: [
          {
            name: 'Ac