一、设置地图外边框

给地图添加外边框，同时地图中的区域添加细一点的边框。效果图如下：

这里涉及两种边框 ，分别在  geo 和 series 种设置 。主要代码如下：

option = {
    backgroundColor: '#000',//画布背景颜色
    geo: {
        show: true,
        map: 'china',
        label: {
            show: false
        },
        roam: false,
        itemStyle: {
            normal: {
                areaColor: '#000',
                borderWidth: 4, //设置外层边框
                borderColor:'#f8911b',
            },
            emphasis: {
                show: false,
                // areaColor: '#01215c'
            }
        }
    },
    series: [
        {
            type: 'map',
            map: 'china',
            label: {
                show: false
            },
            roam: false,
            itemStyle: {
                normal: {
                    areaColor: '#000',
                    borderColor: '#a18a3a',
                    borderWidth: 1
                },
                emphasis: {
                    show: false,
                    areaColor: null
                }
            },
        }
    ]
}

二、地图背景渐变

需要给地图整体添加渐变色，而不是给让地图中某一块区域进行渐变，效果图如下：

根据 echart 官网 areaColor 配置项，我们可以看出官方提供了 API 来填充地图区域的颜色。不仅支持纯色之外，还支持渐变色和纹理填充。主要代码实现如下：

itemStyle: {
    normal: {
        areaColor: {
            color: {
                type: 'linear',
                x: 0,
                y: 0,
                x2: 1,
                y2: 1,
                colorStops: [{
                    offset: 0, color: '#24a0fa'
                }, {
                    offset: 1, color: '#15072a'
                }],
                global: false
            }
        },
        borderColor: '#a18a3a',
        borderWidth: 1,
        
    },
    emphasis: {
        show: false,
        areaColor: null
    }
},

三、地图阴影,增加立体感

效果图如下:

主要代码如下:

geo: {
    itemStyle: {
        normal: {
            shadowColor: 'rgba(1, 39, 44, 1)',
            shadowOffsetX: 0,
            shadowOffsetY: 8
        }
    }
},

四、地图上打点

效果图如下：

主要代码如下：

option = {
    ...
    series: [
        {
          type: 'scatter',
          coordinateSystem: 'geo',
          data: convertData(data),
          symbolSize: 20,
          symbol: 'image://https://pic.ulecdn.com/item/user_0102/desc20190115/1fb19e0cf39aafef_-1x-1.png',
          symbolRotate: 35,
          label: {
              normal: {
                  formatter: '{b}',
                  position: 'right',
                  show: false
              },
              emphasis: {
                  show: true
              }
          },
          itemStyle: {
              normal: {
                    color: '#F06C00'
              }
          }
        },
        ...
    ]
}

如有需要,请 查看完整代码.

补充：点击地图某个省区域，地图将中国地图重新渲染该省的地图，如何实现这个交互效果呢？

如果我们指明只渲染部分区域的地图的话，我们需要引入 各区域地图 JSON 文件，使用 echarts.registerMap API 注册可用的地图即可。

如何监听地图上的点击事件呢？echarts 中的事件和行为

myChart.on('click', function (params) {
    // 控制台打印数据的名称
    console.log(params.name);
});

最后一个疑问就是，如何同时获取【地图区域】JSON 文件 和 地图打点数据，这里 JSON 文件放在服务器中，我们也是通过接口请求获取到，详情使用：axios.all()解决并发请求 来解决多个请求都完成后再执行渲染处理的操作。

完整案例：（访问 eacharts 官网案例中运行，即可实现效果图）。

var data = [
    {name: '海门', value: 9},
    {name: '鄂尔多斯', value: 12},
    {name: '招远', value: 12},
    {name: '舟山', value: 12},
    {name: '齐齐哈尔', value: 14},
    {name: '盐城', value: 15},
    {name: '赤峰', value: 16},
    {name: '青岛', value: 18},
    {name: '乳山', value: 18},
    {name: '金昌', value: 19},
    {name: '泉州', value: 21},
    {name: '南通', value: 23},
    {name: '拉萨', value: 24},
    {name: '云浮', value: 24},
    {name: '上海', value: 25},
    {name: '攀枝花', value: 25},
    {name: '承德', value: 25},
    {name: '汕尾', value: 26},
    {name: '丹东', value: 27},
    {name: '瓦房店', value: 30},
    {name: '延安', value: 38},
    {name: '咸阳', value: 43},
    {name: '南昌', value: 54},
    {name: '柳州', value: 54},
    {name: '三亚', value: 54},
    {name: '泸州', value: 57},
    {name: '克拉玛依', value: 72}
];

var geoCoordMap = {
   '海门':[121.15,31.89],
   '鄂尔多斯':[109.781327,39.608266],
   '招远':[120.38,37.35],
   '舟山':[122.207216,29.985295],
   '齐齐哈尔':[123.97,47.33],
   '盐城':[120.13,33.38],
   '赤峰':[118.87,42.28],
   '青岛':[120.33,36.07],
   '乳山':[121.52,36.89],
   '金昌':[102.188043,38.520089],
   '泉州':[118.58,24.93],
   '莱西':[120.53,36.86],
   '日照':[119.46,35.42],
   '胶南':[119.97,35.88],
   '南通':[121.05,32.08],
   '拉萨':[91.11,29.97],
   '云浮':[112.02,22.93],
   '梅州':[116.1,24.55],
   '文登':[122.05,37.2],
   '上海':[121.48,31.22],
   '攀枝花':[101.718637,26.582347],
   '威海':[122.1,37.5],
   '承德':[117.93,40.97],
   '厦门':[118.1,24.46],
   '汕尾':[115.375279,22.786211],
   '潮州':[116.63,23.68],
   '丹东':[124.37,40.13],
   '太仓':[121.1,31.45],
   '曲靖':[103.79,25.51],
   '烟台':[121.39,37.52],
   '福州':[119.3,26.08],
   '瓦房店':[121.979603,39.627114],
   '即墨':[120.45,36.38],
   '抚顺':[123.97,41.97],
   '玉溪':[102.52,24.35],
   '张家口':[114.87,40.82],
   '阳泉':[113.57,37.85],
   '莱州':[119.942327,37.177017],
   '湖州':[120.1,30.86],
   '汕头':[116.69,23.39],
   '昆山':[120.95,31.39],
   '宁波':[121.56,29.86],
   '湛江':[110.359377,21.270708],
   '揭阳':[116.35,23.55],
   '荣成':[122.41,37.16],
   '连云港':[119.16,34.59],
   '葫芦岛':[120.836932,40.711052],
   '常熟':[120.74,31.64],
   '东莞':[113.75,23.04],
   '河源':[114.68,23.73],
   '淮安':[119.15,33.5],
   '泰州':[119.9,32.49],
   '南宁':[108.33,22.84],
   '营口':[122.18,40.65],
   '惠州':[114.4,23.09],
   '江阴':[120.26,31.91],
   '蓬莱':[120.75,37.8],
   '韶关':[113.62,24.84],
   '嘉峪关':[98.289152,39.77313],
   '广州':[113.23,23.16],
   '延安':[109.47,36.6],
   '太原':[112.53,37.87],
   '清远':[113.01,23.7],
   '中山':[113.38,22.52],
   '昆明':[102.73,25.04],
   '寿光':[118.73,36.86],
   '盘锦':[122.070714,41.119997],
   '长治':[113.08,36.18],
   '深圳':[114.07,22.62],
   '珠海':[113.52,22.3],
   '宿迁':[118.3,33.96],
   '咸阳':[108.72,34.36],
   '铜川':[109.11,35.09],
   '平度':[119.97,36.77],
   '佛山':[113.11,23.05],
   '海口':[110.35,20.02],
   '江门':[113.06,22.61],
   '章丘':[117.53,36.72],
   '肇庆':[112.44,23.05],
   '大连':[121.62,38.92],
   '临汾':[111.5,36.08],
   '吴江':[120.63,31.16],
   '石嘴山':[106.39,39.04],
   '沈阳':[123.38,41.8],
   '苏州':[120.62,31.32],
   '茂名':[110.88,21.68],
   '嘉兴':[120.76,30.77],
   '长春':[125.35,43.88],
   '胶州':[120.03336,36.264622],
   '银川':[106.27,38.47],
   '张家港':[120.555821,31.875428],
   '三门峡':[111.19,34.76],
   '锦州':[121.15,41.13],
   '南昌':[115.89,28.68],
   '柳州':[109.4,24.33],
   '三亚':[109.511909,18.252847],
   '自贡':[104.778442,29.33903],
   '吉林':[126.57,43.87],
   '阳江':[111.95,21.85],
   '泸州':[105.39,28.91],
   '西宁':[101.74,36.56],
   '宜宾':[104.56,29.77],
   '呼和浩特':[111.65,40.82],
   '成都':[104.06,30.67],
   '大同':[113.3,40.12],
   '镇江':[119.44,32.2],
   '桂林':[110.28,25.29],
   '张家界':[110.479191,29.117096],
   '宜兴':[119.82,31.36],
   '北海':[109.12,21.49],
   '西安':[108.95,34.27],
   '金坛':[119.56,31.74],
   '东营':[118.49,37.46],
   '牡丹江':[129.58,44.6],
   '遵义':[106.9,27.7],
   '绍兴':[120.58,30.01],
   '扬州':[119.42,32.39],
   '常州':[119.95,31.79],
   '潍坊':[119.1,36.62],
   '重庆':[106.54,29.59],
   '台州':[121.420757,28.656386],
   '南京':[118.78,32.04],
   '滨州':[118.03,37.36],
   '贵阳':[106.71,26.57],
   '无锡':[120.29,31.59],
   '本溪':[123.73,41.3],
   '克拉玛依':[84.77,45.59],
   '渭南':[109.5,34.52],
   '马鞍山':[118.48,31.56],
   '宝鸡':[107.15,34.38],
   '焦作':[113.21,35.24],
   '句容':[119.16,31.95],
   '北京':[116.46,39.92],
   '徐州':[117.2,34.26],
   '衡水':[115.72,37.72],
   '包头':[110,40.58],
   '绵阳':[104.73,31.48],
   '乌鲁木齐':[87.68,43.77],
   '枣庄':[117.57,34.86],
   '杭州':[120.19,30.26],
   '淄博':[118.05,36.78],
   '鞍山':[122.85,41.12],
   '溧阳':[119.48,31.43],
   '库尔勒':[86.06,41.68],
   '安阳':[114.35,36.1],
   '开封':[114.35,34.79],
   '济南':[117,36.65],
   '德阳':[104.37,31.13],
   '温州':[120.65,28.01],
   '九江':[115.97,29.71],
   '邯郸':[114.47,36.6],
   '临安':[119.72,30.23],
   '兰州':[103.73,36.03],
   '沧州':[116.83,38.33],
   '临沂':[118.35,35.05],
   '南充':[106.110698,30.837793],
   '天津':[117.2,39.13],
   '富阳':[119.95,30.07],
   '泰安':[117.13,36.18],
   '诸暨':[120.23,29.71],
   '郑州':[113.65,34.76],
   '哈尔滨':[126.63,45.75],
   '聊城':[115.97,36.45],
   '芜湖':[118.38,31.33],
   '唐山':[118.02,39.63],
   '平顶山':[113.29,33.75],
   '邢台':[114.48,37.05],
   '德州':[116.29,37.45],
   '济宁':[116.59,35.38],
   '荆州':[112.239741,30.335165],
   '宜昌':[111.3,30.7],
   '义乌':[120.06,29.32],
   '丽水':[119.92,28.45],
   '洛阳':[112.44,34.7],
   '秦皇岛':[119.57,39.95],
   '株洲':[113.16,27.83],
   '石家庄':[114.48,38.03],
   '莱芜':[117.67,36.19],
   '常德':[111.69,29.05],
   '保定':[115.48,38.85],
   '湘潭':[112.91,27.87],
   '金华':[119.64,29.12],
   '岳阳':[113.09,29.37],
   '长沙':[113,28.21],
   '衢州':[118.88,28.97],
   '廊坊':[116.7,39.53],
   '菏泽':[115.480656,35.23375],
   '合肥':[117.27,31.86],
   '武汉':[114.31,30.52],
   '大庆':[125.03,46.58]
};

function convertData(data) {
   var res = [];
   for (var i = 0; i < data.length; i++) {
       var geoCoord = geoCoordMap[data[i].name];
       if (geoCoord) {
           res.push({
               name: data[i].name,
               value: geoCoord.concat(data[i].value)
           });
       }
   }
   return res;
};



option = {
    backgroundColor: '#000',//画布背景颜色
    geo: {
        show: true,
        map: 'china',
        label: {
            show: false
        },
        roam: false,
        itemStyle: {
            normal: {
                areaColor: {
                    type: 'linear',
                    x: 0,
                    y: 1,
                    x2: 0.7,
                    y2: 0,
                    colorStops: [{
                        offset: 0, color: '#24a0fa'
                    }, {
                        offset: 1, color: '#15072a'
                    }],
                    global: false
                },
                borderWidth: 4,//设置外层边框
                borderColor:'#f8911b',
                // shadowColor: 'rgba(0,54,255, 1)',
                // shadowColor: 'rgba(3, 36, 117, 1)',
                // shadowBlur: 150
            },
            emphasis: {
                show: false,
                // areaColor: '#01215c'
            }
        }
    },
    series: [
        {
          type: 'scatter',
          coordinateSystem: 'geo',
          data: convertData(data),
          symbolSize: 20,
          symbol: 'image://https://pic.ulecdn.com/item/user_0102/desc20190115/1fb19e0cf39aafef_-1x-1.png',
          symbolRotate: 35,
          label: {
              normal: {
                  formatter: '{b}',
                  position: 'right',
                  show: false
              },
              emphasis: {
                  show: true
              }
          },
          itemStyle: {
              normal: {
                    color: '#F06C00'
              }
          }
        },
        {
            type: 'map',
            map: 'china',
            label: {
                // show: false
                normal: {
                    show: false,
                },
                emphasis: {
                    show: false,
                    textStyle: {
                        color: '#fff'
                    }
                }
            },
            roam: false,
            itemStyle: {
                normal: {
                    areaColor: {
                        color: {
                            type: 'linear',
                            x: 0,
                            y: 0,
                            x2: 1,
                            y2: 1,
                            colorStops: [{
                                offset: 0, color: '#24a0fa'
                            }, {
                                offset: 1, color: '#15072a'
                            }],
                            global: false
                        }
                    },
                    borderColor: '#a18a3a',
                    borderWidth: 1,
                    
                },
                emphasis: {
                    show: false,
                    areaColor: null
                }
            },
            
        }
    ]
}