百度地图随机生成某个行政区域的随机坐标
主要是为了生成模拟数据
示例
<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>百度地图随机生成某个行政区域的随机坐标</title><!-- 必须要更改AK --><!-- 必须要更改AK --><!-- 必须要更改AK --><script type="text/javascript" src="http://api./api?v=2.0&ak=你的AK"></script><script type="text/javascript" src="http://api./library/GeoUtils/1.2/src/GeoUtils_min.js"></script></head><body><div id="allmap" style="width:1000px;height:500px"></div><div id="divInfo"></div></body></html><script type="text/javascript">window.onload = function () {var map = new BMap.Map("allmap");//中心点坐标map.centerAndZoom(new BMap.Point(113.665336,34.753203), 5);map.enableScrollWheelZoom();var bdary = new BMap.Boundary();//要显示的行政区域 可以是为 市 县 区bdary.get("金水区", function (rs) { //获取行政区域map.clearOverlays(); //清除地图覆盖物 var count = rs.boundaries.length; //行政区域的点有多少个if (count === 0) {alert('未能获取当前输入行政区域');return;}var pointArray = [];for (var i = 0; i < count; i++) {var ply = new BMap.Polygon(rs.boundaries[i]); //建立多边形覆盖物map.addOverlay(ply); //添加覆盖物pointArray = pointArray.concat(ply.getPath());map.setViewport(pointArray);//控制坐标范围var res = "";var minX = 113.665336; //这里控制生成坐标的范围var minY = 34.753203;//这里控制生成坐标的范围var x = 0;var y = 0;var pt = null;for (var i = 0; i < 200; i++) {x = minX + getRandom();y = minY + getRandom();pt = new BMap.Point(x , y);if (BMapLib.GeoUtils.isPointInPolygon(pt, ply)) {console.log(x,y);var marker = marker = new BMap.Marker(new BMap.Point(x, y));map.addOverlay(marker);//res += 'marker = new BMap.Marker(new BMap.Point(' + x + ' ,' + y + '));<br/>map.addOverlay(marker);<br/> ';}}divInfo.innerHTML = res;}//map.setViewport(pointArray); //调整视野 //addlabel();});document.getElementById("divInfo").innerHTML = Math.random()/4;}function getRandom() {return Math.random() / 2;}</script>
