使用地图的三种的方式:
- 注册地图(用json或svg,注册为地图),然后使用map地图
 - 使用geo坐标系,地图注册后不是直接使用,而是注册为坐标系。
 - 直接使用百度地图、高德地图,使用百度地图或高德地图作为坐标系。
 
用json或svg注册为地图,然后使用map地图
从DataV中获取地图数据。
 
 echarts.registerMap(“china”, china) 注册地图
 map :使用 registerMap 注册的地图名称。
import * as echarts from "echarts";
import { onMounted, watch } from "vue";
import "./vintage";
import china from "./china.json";
let myEcharts;
onMounted(() => {
  let canvas = document.getElementById("canvas");
  echarts.registerMap("china", china);
  myEcharts = echarts.init(canvas, "vintage", {
    width: 500,
    height: 500,
    devicePixelRatio: window.devicePixelRatio,
    locale: "ZH",
  });
  let options = {
    tooltip: {},
    series: [
      {
        type: "map",
        roam: true,
        width: 500,
        height: 500,
        map: "china",
      },
    ],
  };
  rednderEcharts(options);
});
function rednderEcharts(options) {
  myEcharts.setOption(options);
}
 

使用series调节绘制的地图
地图中也label,tooltip,lenged等属性,也可以用itemStyle调整每块区域的样式。
 地图特有的属性:
 数据映射: nameMap
 缩放相关的:scaleLimit,zoom
如果想给某个省份添加数据,可以设置data
 let options = {
    tooltip: {},
    series: [
      {
        type: "map",
        roam: true,
        width: 500,
        height: 500,
        map: "china",
        label: {
          // show: true,
        },
        itemStyle: { // 地图的颜色
          areaColor: "blue",
        },
        emphasis: { //高亮色
          itemStyle: {
            areaColor: "red",
          },
        },
        data: [{ name: "天津市", value: 20 }],//name要完全对应
      },
    ],
  };
 

 scaleLimit :滚轮缩放的极限控制,通过min, max最小和最大的缩放值。
 zoom:当前视角的缩放比例。
 nameMap:自定义地区的名称映射。
 let options = {
  tooltip: {},
  series: [
    {
      type: "map",
      roam: true,
      width: 500,
      height: 500,
      map: "china",
      label: {
        // show: true,
      },
      itemStyle: {
        // 地图的颜色
        areaColor: "blue",
      },
      emphasis: {
        //高亮色
        itemStyle: {
          areaColor: "red",
        },
      },
      nameMap: {
        河北省: "冀",
      },
      scaleLimit: {
        min: 1,
        max: 5,
      },
      zoom: 5,
      data: [
        { name: "天津市", value: 20 },
        {
          name: "冀",
          value: 100,
        },
      ],
    },
  ],
};
 

visualMap 根据数值显示不同的颜色,一般配合热力图或地图
inRange 调控颜色的变化范围
 min,max 调控最大、最小值
 left 调节组件的位置
 text调节组件最高最低的文本
 let options = {
    tooltip: {},
    series: [
      {
        type: "map",
        roam: true,
        width: 500,
        height: 500,
        map: "china",
        label: {
          // show: true,
        },
        itemStyle: {
          // 地图的颜色
          areaColor: "blue",
        },
        emphasis: {
          //高亮色
          itemStyle: {
            areaColor: "red",
          },
        },
        nameMap: {
          河北省: "冀",
        },
        scaleLimit: {
          min: 1,
          max: 5,
        },
        //  zoom: 5,
        data: [
          { name: "天津市", value: 20 },
          { name: "山西省", value: 10 },
          { name: "河南省", value: 15 },
          {
            name: "冀",
            value: 40,
          },
        ],
      },
    ],
    visualMap: {
      type: "continuous", //"piecewise" 调控颜色的条是连续的还是不连续的
      min: 0,  // 
      max: 40,
      range: [4, 35],  //范围是从4-35 ,整个范围是0-40
      text: ["最小值", "最大值"], // 调控颜色的条上下的文字
      left: 120,
      inRange: {
        color: ["#313695", "#4575b4", "#74add1", "#abd9e9", "#e0f3f8"],
      },
    },
  };
 

geo 地理坐标系绘制地图
如果以地图为基础,在地图的某个位置上绘制一些东西,可以使用geo地理坐标系来绘图
 1.图表的调节与map图标一致
 2. 如果相对地图中的某一个区域进行特殊的配置,要使用regions
 let options = {
    tooltip: {},
    geo: {
      map: "china",
      roam: true,
      zoom: 2,
      itemStyle: {
        areaColor: "blue",
      },
    },
    visualMap: {
      type: "continuous", //"piecewise"
      min: 0,
      max: 40,
      range: [4, 35],
      text: ["最小值", "最大值"],
      left: 120,
      inRange: {
        color: ["#313695", "#4575b4", "#74add1", "#abd9e9", "#e0f3f8"],
      },
    },
  };
 

 在图中添加数据,以graph关系图为例
 let options = {
    tooltip: {},
    geo: {
      map: "china",
      roam: true,
      zoom: 1,
      itemStyle: {
        areaColor: "blue",
      },
    },
    series: [
      {
        type: "graph",
        coordinateSystem: "geo",
        data: [
          [112.549248, 37.857014],
          [111.670801, 40.818311],
          [115.426264, 39.950502],
          [116.677853, 40.970888],
        ],
      },
    ],
  };
 

  let options = {
    tooltip: {},
    geo: {
      map: "china",
      roam: true,
      zoom: 1,
      itemStyle: {
        areaColor: "blue",
      },
      regions: [
        {
          name: "河北省",
          itemStyle: {
            areaColor: "yellow",
          },
        },
      ],
    },
    series: [
      {
        type: "graph",
        coordinateSystem: "geo",
        data: [
          [112.549248, 37.857014],
          [111.670801, 40.818311],
          [115.426264, 39.950502],
          [116.677853, 40.970888],
        ],
      },
    ],
  };
 

geo地理坐标系搭配lines绘制路线
lines经常配合geo使用,用于绘制路线图。与line折线图不同的是,lines主要用来绘制多个线条,数据写法也不同。
lines:路径图
 coords:一个包含两个到多个二维坐标的数组
 let options = {
    tooltip: {},
    geo: {
      map: "china",
      roam: true,
      zoom: 1,
      itemStyle: {
        // areaColor: "blue",
      },
      regions: [
        {
          name: "河北省",
          itemStyle: {
            areaColor: "yellow",
          },
        },
      ],
    },
    series: [
      {
        type: "lines",
        lineStyle: {
          color: "red",
          width: 3,
        },
        data: [
          {
            coords: [
              [117.000923, 36.675807],
              [114.27261, 24.700624],
            ],
          },
          {
            coords: [
              [115.057317, 24.703343],
              [114.27261, 24.700624],
            ],
          },
        ],
      },
    ],
  };
 

使用高德或百度地图

 在html中引入百度地图(要在vue加载前使用,所以放在head中,提前加载)
 必须是3.0,1.0会报错

 在echarts中使用
<script setup>
import * as echarts from "echarts";
import { onMounted, watch } from "vue";
import "./vintage";
import "echarts/extension/bmap/bmap";
let myEcharts;
onMounted(() => {
  let canvas = document.getElementById("canvas");
 
  myEcharts = echarts.init(canvas, null, {
    width: 1200,
    height: 1200,
    devicePixelRatio: window.devicePixelRatio,
    locale: "ZH",
  });
  let options = {
    tooltip: {},
    bmap: {
      center: [116.405285, 39.904989],
      roam: true,
      zoom: 18,
    },
    series: [],
  };
  rednderEcharts(options);
});
function rednderEcharts(options) {
  myEcharts.setOption(options);
}
</script>
<template>
  <div id="canvas" width="400" height="400"></div>
</template>
<style scoped>
#canvas {  //一定要在给 元素设置宽高,否则会报错
  width: 1200px;
  height: 1200px;
}
</style>
 

 添加数据
 let options = {
    tooltip: {},
    bmap: {
      center: [116.405285, 39.904989],
      roam: true,
      zoom: 18,
    },
    series: [
      {
        type: "lines", //这里的线条有动画效果
        coordinateSystem: "bmap",
        lineStyle: {
          color: "yellow",
          width: 1,
        },
        effect: {
          show: true,
          symbol: "",
        },
        data: [
          {
            coords: [
              [117.000923, 36.675807],
              [114.27261, 24.700624],
            ],
          },
          {
            coords: [
              [115.057317, 24.703343],
              [114.27261, 24.700624],
            ],
          },
        ],
      },
    ],
  };
 

自定义地图的颜色
可以修改陆地,海洋的颜色
let options = {
    tooltip: {},
    bmap: {
      center: [116.405285, 39.904989],
      roam: true,
      zoom: 18,
      mapStyle: {
        styleJson: [
          {
            featureType: "land",
            elementType: "all",
            stylers: {
              color: "#f3f3f3",
            },
          },
        ],
      },
    },
    series: [
      {
        type: "lines",
        coordinateSystem: "bmap",
        lineStyle: {
          color: "yellow",
          width: 1,
        },
        effect: {
          show: true,
          symbol: "",
        },
        data: [
          {
            coords: [
              [117.000923, 36.675807],
              [114.27261, 24.700624],
            ],
          },
          {
            coords: [
              [115.057317, 24.703343],
              [114.27261, 24.700624],
            ],
          },
        ],
      },
    ],
  };
 




















