不知道百度地图怎么结合echarts使用的看我上一篇文章
https://www.jianshu.com/p/deaf251f7e57
之前有一个问题是如果有多个点来回交互，其实只需要设置echarts legend的一个组件
selectedMode: 'single'改成selectedMode: 'multiple'就可以了，自己具体复杂的业务在这上面衍生一下就好了，慢慢来别着急

注意当你使用visualMap时
两点之间线的颜色改不掉时，需要把visualMap里color数组的颜色全部改成你想要的颜色就可以了
或者直接删掉visualMap,修改lines的lineStyle修改color
直接贴代码

<template>
  <div class="wrapper">
    <div id="chart"></div>
  </div>
</template>

<script>
  export default {
    data(){
      return{}
    },
    mounted(){
     let myChart = this.$echarts.init(document.getElementById('chart'));
      var startPoint = {
        x: 104.114129,
        y: 37.550339
      };
// 地图自定义样式
      var bmap = {
        center: [startPoint.x, startPoint.y],
        zoom: 5,
        roam: true,
        mapStyle: {

        }
      }
      //地图上的坐标对应地点
      var geoCoordMap = {
        '上海': [121.4648, 31.2891],
        '东莞': [113.8953, 22.901],
        '东营': [118.7073, 37.5513],
        '中山': [113.4229, 22.478],
        '临汾': [111.4783, 36.1615],
        '临沂': [118.3118, 35.2936],
        '丹东': [124.541, 40.4242],
        '丽水': [119.5642, 28.1854],
        '乌鲁木齐': [87.9236, 43.5883],
        '佛山': [112.8955, 23.1097],
        '保定': [115.0488, 39.0948],
        '兰州': [103.5901, 36.3043],
        '包头': [110.3467, 41.4899],
        '北京': [116.4551, 40.2539],
        '北海': [109.314, 21.6211],
        '南京': [118.8062, 31.9208],
        '南宁': [108.479, 23.1152],
        '南昌': [116.0046, 28.6633],
        '南通': [121.1023, 32.1625],
        '厦门': [118.1689, 24.6478],
        '台州': [121.1353, 28.6688],
        '合肥': [117.29, 32.0581],
        '呼和浩特': [111.4124, 40.4901],
        '咸阳': [108.4131, 34.8706],
        '哈尔滨': [127.9688, 45.368],
        '唐山': [118.4766, 39.6826],
        '嘉兴': [120.9155, 30.6354],
        '大同': [113.7854, 39.8035],
        '大连': [122.2229, 39.4409],
        '天津': [117.4219, 39.4189],
        '太原': [112.3352, 37.9413],
        '威海': [121.9482, 37.1393],
        '宁波': [121.5967, 29.6466],
        '宝鸡': [107.1826, 34.3433],
        '宿迁': [118.5535, 33.7775],
        '常州': [119.4543, 31.5582],
        '广州': [113.5107, 23.2196],
        '廊坊': [116.521, 39.0509],
        '延安': [109.1052, 36.4252],
        '张家口': [115.1477, 40.8527],
        '徐州': [117.5208, 34.3268],
        '德州': [116.6858, 37.2107],
        '惠州': [114.6204, 23.1647],
        '成都': [103.9526, 30.7617],
        '扬州': [119.4653, 32.8162],
        '承德': [117.5757, 41.4075],
        '拉萨': [91.1865, 30.1465],
        '无锡': [120.3442, 31.5527],
        '日照': [119.2786, 35.5023],
        '昆明': [102.9199, 25.4663],
        '杭州': [119.5313, 29.8773],
        '枣庄': [117.323, 34.8926],
        '柳州': [109.3799, 24.9774],
        '株洲': [113.5327, 27.0319],
        '武汉': [114.3896, 30.6628],
        '汕头': [117.1692, 23.3405],
        '江门': [112.6318, 22.1484],
        '沈阳': [123.1238, 42.1216],
        '沧州': [116.8286, 38.2104],
        '河源': [114.917, 23.9722],
        '泉州': [118.3228, 25.1147],
        '泰安': [117.0264, 36.0516],
        '泰州': [120.0586, 32.5525],
        '济南': [117.1582, 36.8701],
        '济宁': [116.8286, 35.3375],
        '海口': [110.3893, 19.8516],
        '淄博': [118.0371, 36.6064],
        '淮安': [118.927, 33.4039],
        '深圳': [114.5435, 22.5439],
        '清远': [112.9175, 24.3292],
        '温州': [120.498, 27.8119],
        '渭南': [109.7864, 35.0299],
        '湖州': [119.8608, 30.7782],
        '湘潭': [112.5439, 27.7075],
        '滨州': [117.8174, 37.4963],
        '潍坊': [119.0918, 36.524],
        '烟台': [120.7397, 37.5128],
        '玉溪': [101.9312, 23.8898],
        '珠海': [113.7305, 22.1155],
        '盐城': [120.2234, 33.5577],
        '盘锦': [121.9482, 41.0449],
        '石家庄': [114.4995, 38.1006],
        '福州': [119.4543, 25.9222],
        '秦皇岛': [119.2126, 40.0232],
        '绍兴': [120.564, 29.7565],
        '聊城': [115.9167, 36.4032],
        '肇庆': [112.1265, 23.5822],
        '舟山': [122.2559, 30.2234],
        '苏州': [120.6519, 31.3989],
        '莱芜': [117.6526, 36.2714],
        '菏泽': [115.6201, 35.2057],
        '营口': [122.4316, 40.4297],
        '葫芦岛': [120.1575, 40.578],
        '衡水': [115.8838, 37.7161],
        '衢州': [118.6853, 28.8666],
        '西宁': [101.4038, 36.8207],
        '西安': [109.1162, 34.2004],
        '贵阳': [106.6992, 26.7682],
        '连云港': [119.1248, 34.552],
        '邢台': [114.8071, 37.2821],
        '邯郸': [114.4775, 36.535],
        '郑州': [113.4668, 34.6234],
        '鄂尔多斯': [108.9734, 39.2487],
        '重庆': [107.7539, 30.1904],
        '金华': [120.0037, 29.1028],
        '铜川': [109.0393, 35.1947],
        '银川': [106.3586, 38.1775],
        '镇江': [119.4763, 31.9702],
        '长春': [125.8154, 44.2584],
        '长沙': [113.0823, 28.2568],
        '长治': [112.8625, 36.4746],
        '阳泉': [113.4778, 38.0951],
        '青岛': [120.4651, 36.3373],
        '韶关': [113.7964, 24.7028]
      };
       //[[{原点},{目标点,值}]]
      var BJData = [
        [{
          name: '北京'
        }, {
          name: '上海',
          value: 95
        }],
        [{
          name: '北京'
        }, {
          name: '广州',
          value: 90
        }],
        [{
          name: '北京'
        }, {
          name: '大连',
          value: 80
        }],
        [{
          name: '北京'
        }, {
          name: '南宁',
          value: 70
        }],
        [{
          name: '北京'
        }, {
          name: '南昌',
          value: 60
        }],
        [{
          name: '北京'
        }, {
          name: '拉萨',
          value: 50
        }],
        [{
          name: '北京'
        }, {
          name: '长春',
          value: 40
        }],
        [{
          name: '北京'
        }, {
          name: '包头',
          value: 30
        }],
        [{
          name: '北京'
        }, {
          name: '重庆',
          value: 20
        }],
        [{
          name: '北京'
        }, {
          name: '常州',
          value: 10
        }]
      ];

      var SHData = [
        [{
          name: '上海'
        }, {
          name: '包头',
          value: 95
        }],
        [{
          name: '上海'
        }, {
          name: '昆明',
          value: 90
        }],
        [{
          name: '上海'
        }, {
          name: '广州',
          value: 80
        }],
        [{
          name: '上海'
        }, {
          name: '郑州',
          value: 70
        }],
        [{
          name: '上海'
        }, {
          name: '长春',
          value: 60
        }],
        [{
          name: '上海'
        }, {
          name: '重庆',
          value: 50
        }],
        [{
          name: '上海'
        }, {
          name: '长沙',
          value: 40
        }],
        [{
          name: '上海'
        }, {
          name: '北京',
          value: 30
        }],
        [{
          name: '上海'
        }, {
          name: '丹东',
          value: 20
        }],
        [{
          name: '上海'
        }, {
          name: '大连',
          value: 10
        }]
      ];

      var GZData = [
        [{
          name: '广州'
        }, {
          name: '福州',
          value: 95
        }],
        [{
          name: '广州'
        }, {
          name: '太原',
          value: 90
        }],
        [{
          name: '广州'
        }, {
          name: '长春',
          value: 80
        }],
        [{
          name: '广州'
        }, {
          name: '重庆',
          value: 70
        }],
        [{
          name: '广州'
        }, {
          name: '西安',
          value: 60
        }],
        [{
          name: '广州'
        }, {
          name: '成都',
          value: 50
        }],
        [{
          name: '广州'
        }, {
          name: '常州',
          value: 40
        }],
        [{
          name: '广州'
        }, {
          name: '北京',
          value: 30
        }],
        [{
          name: '广州'
        }, {
          name: '北海',
          value: 20
        }],
        [{
          name: '广州'
        }, {
          name: '海口',
          value: 10
        }]
      ];
      //飞机形状 svg图标
      var planePath = 'path://M1705.06,1318.313v-89.254l-319.9-221.799l0.073-208.063c0.521-84.662-26.629-121.796-63.961-121.491c-37.332-0.305-64.482,36.829-63.961,121.491l0.073,208.063l-319.9,221.799v89.254l330.343-157.288l12.238,241.308l-134.449,92.931l0.531,42.034l175.125-42.917l175.125,42.917l0.531-42.034l-134.449-92.931l12.238-241.308L1705.06,1318.313z';

      var convertData = function(data) {
        var res = [];
        for (var i = 0; i < data.length; i++) {
          var dataItem = data[i];
          var fromCoord = geoCoordMap[dataItem[0].name];
          var toCoord = geoCoordMap[dataItem[1].name];
          if (fromCoord && toCoord) {
            res.push({
              fromName: dataItem[0].name,
              toName: dataItem[1].name,
              coords: [fromCoord, toCoord],
              value: dataItem[1].value
            });
          }
        }

        return res;
      };

      var color = ['#a6c84c', '#ffa022', '#46bee9'];
      var series = [];
      [
        ['北京', BJData],
        ['上海', SHData],
        ['广州', GZData]
      ].forEach(function(item, i) {
        series.push(
          //原点
       {
          name: item[0] + ' Top10',
          type: 'effectScatter',
          coordinateSystem: 'bmap',
          zlevel: 2,
          rippleEffect: {
            brushType: 'stroke'
          },
          label: {
            normal: {
              show: true,
              position: 'right',
              formatter: '{b}'
            }
          },
          symbolSize: function(val) {
            return val[2] / 4;
          },
          showEffectOn: 'render',
          itemStyle: {
            normal: {
              color: color[i]
            }
          },
          data: [{
            name: item[0],
            value: geoCoordMap[item[0]].concat([100])
          }]
        },
          //原点到目标点移动的线
          {
          name: item[0] + ' Top10',
          type: 'lines',
          coordinateSystem: 'bmap',
          zlevel: 1,
          effect: {
            show: true,
            period: 6,
            trailLength: 0.7,
            color: '#fff',
            symbolSize: 3
          },
          lineStyle: {
            normal: {
              color: color[i],
              width: 0,
              curveness: 0.2
            }
          },
          data: convertData(item[1])
        },
          //原点到目标点初始存在的线，飞机svg
          {
          name: item[0] + ' Top10',
          type: 'lines',
          coordinateSystem: 'bmap',
            // symbol: ['none', 'arrow'],
            // symbolSize: 10,
          zlevel: 2,
          effect: {
            show: true,
            period: 6,
            trailLength: 0,
            symbol: planePath,
            symbolSize: 15
          },
          lineStyle: {
            normal: {
              color: color[i],
              width: 1,
              opacity: 0.4,
              curveness: 0.2
            }
          },
          data: convertData(item[1])
        },
          //目标点
          {
          name: item[0] + ' Top10',
          type: 'effectScatter',
          coordinateSystem: 'bmap',
          zlevel: 2,
          rippleEffect: {
            brushType: 'stroke'
          },
          label: {
            normal: {
              show: true,
              position: 'right',
              formatter: '{b}'
            }
          },
          symbolSize: function(val) {
            return val[2] / 4;
          },
          showEffectOn: 'render',
          itemStyle: {
            normal: {
              color: color[i]
            }
          },
          data: item[1].map(function(dataItem) {
            return {
              name: dataItem[1].name,
              value: geoCoordMap[dataItem[1].name].concat([dataItem[1].value])
            };
          })
        }
        );
      });
     console.log(series);
     let option = {
        bmap: bmap,
        color: ['gold', 'aqua', 'lime'],

        title: {
          text: '模拟迁徙+百度地图',
          subtext: 'data-visual.cn',
          sublink:'http://data-visual.cn',
          left: 'center',
          textStyle: {
            color: '#fff'
          }
        },
        tooltip: {
          trigger: 'item'
        },
        legend: {
          orient: 'vertical',
          show: false,
          top: '50',
          left: 'center',
          data: ['北京 Top10', '上海 Top10', '广州 Top10'],
          textStyle: {
            color: '#fff'
          },
          selectedMode: 'multiple'
        },
        geo: {
          map: 'bmap',
          polyline: true,
          progressiveThreshold: 500,
          progressive: 200,
          label: {
            emphasis: {
              show: false
            }
          },
          roam: true,
          itemStyle: {
            normal: {
              areaColor: '#323c48',
              borderColor: '#404a59'
            },
            emphasis: {
              areaColor: '#2a333d'
            }
          }
        },
        series: series
      };
      myChart.setOption(option);

    },
  }
</script>

<style scoped>
  .wrapper,#chart{
    width: 100%;
    height: 100%;
    position: relative;
}
</style>