Vue和ECharts4Taro3开发实践：如何实现数据可视化的实时地图更新

const http = require('http');
const socketio = require('socket.io');

const server = http.createServer();
const io = socketio(server);

io.on('connection', (socket) => {
  console.log('A user connected.');

  // 模拟数据更新，并推送到前端
  setInterval(() => {
    const data = {
      // 数据内容...
    };
    socket.emit('update', data);
  }, 1000);

  socket.on('disconnect', () => {
    console.log('A user disconnected.');
  });
});

server.listen(3000, () => {
  console.log('Server is running on port 3000.');
});

<template>
  <div>
    <ec-canvas id="mychart" :echarts="echarts"></ec-canvas>
  </div>
</template>

<script>
import * as echarts from "echarts";
import io from "socket.io-client";

export default {
  data() {
    return {
      echarts: null,
      chartData: [] // 存储地图数据
    };
  },
  mounted() {
    // 创建WebSocket连接
    const socket = io("http://localhost:3000");
    socket.on("update", (data) => {
      this.chartData = data; // 更新地图数据
      this.updateChart(); // 更新地图
    });

    // 初始化地图
    this.echarts = echarts.init(document.getElementById("mychart"));
  },
  methods: {
    updateChart() {
      // 更新地图配置
      const option = {
        // 地图配置...
        series: [
          {
            type: "map",
            // 地图数据
            data: this.chartData
          }
        ]
      };
      this.echarts.setOption(option);
    }
  }
};
</script>