有些时候我们只需要某个省份的行政区域，那么运用百度地图如何实现呢？

我们先上效果图：

步骤：

创建map实例

var map;

createMap() {

map = new BMap.Map('main');

map.centerAndZoom(new BMap.Point(106.714476, 26.60403), 8);

// 将地图在水平位置上移动x像素，垂直位置上移动y像素(x,y)

map.panBy(-210, 330);

getBoundary();

}

绘制行政区域外覆盖物

getBoundary() {

map.clearOverlays(); // 清除地图的其余覆盖物

const bdary = new BMap.Boundary();

bdary.get('贵州省', (rs) => {

const count = rs.boundaries.length;

if (count === 0) {

return ;

}

const EN_JW = '180, 90;';

const NW_JW = '-180, 90;';

const WS_JW = '-180, -90;';

const SE_JW = '180, -90;';

// 东南西北四个角添加一个覆盖物

const ply1 = new BMap.Polygon(rs.boundaries[0] + SE_JW + SE_JW + WS_JW + NW_JW + EN_JW + SE_JW,

{ strokeColor: 'none', fillColor: 'transparent', fillOpacity: 1, strokeOpacity: 1 });

map.addOverlay(ply1);

// 绘制‘贵州省’整体的外轮廓

for (let i = 0; i < count; i++) {

const ply = new BMap.Polygon(rs.boundaries[i], {strokeWeight: 0.5, strokeColor: 'transparent', fillColor: 'transparent'});

map.addOverlay(ply);

}

getRegion();

});

}

绘制省内各个市州的区划

1)获取到省内各个市州的名称以及他们的中心点坐标写成一个变量

var dataArr = [

{

"name": '安顺市',

"cp": [105.9082, 25.9882]

},

{

"name": "贵阳市",

"cp": [106.6992, 26.7682]

}];

2)绘制各个市州的轮廓

getRegion() {

dataArr.forEach(element => {

var bdary = new BMap.Boundary();

bdary.get(element['name'], rs => {

var count = rs.boundaries.length;

for (let i = 0; i < count; i++) {

var ply = new BMap.Polygon(rs.boundaries[i], {

strokeWeight: 0.5, strokeColor: '#fff', fillOpacity: 0.6, fillColor: '#a9dbf7'});

this.map.addOverlay(ply);

}

citySetLabel(new BMap.Point(element['cp'][0], element['cp'][1]) , element['name']);

});

});

}

城市中心点坐标显示label

citySetLabel(cityCenter, cityName) {

var label = new BMap.Label(cityName, {

offset: new BMap.Size(-20, -10),

position: cityCenter

});

label.setStyle({

border: 'none',

background: 'transparent',

'font-size': '0.25rem',

color: '#fff',

});

map.addOverlay(label);

}

标签：map,const,rs,JW,api,BMap,new,行政区域,百度

来源： https://blog.csdn.net/C_fashionCat/article/details/90749443