最近项目中需要实现用地图显示各省份区域销售业绩的统计功能，即省份用不同颜色标示出来。
花时间研究了下，其实Google Map 和 Baidu Map 都有相关实现方法。即 获取区域轮廓坐标系，然后绘制自定义图层。
效果图(用百度地图弄的)
代码
复制
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>获取地区轮廓线</title> <script type="text/javascript" src="http://api.map.baidu.com/api?key=46ce9d0614bf7aefe0ba562f8cf87194&v=1.1&services=true"> </script> <style type="text/css"> body{font-size:13px;margin:10px} #container{width:1200px;height:650px;border:1px solid gray} </style> </head> <body> <div id="container"></div> <script type="text/javascript"> if (typeof console == "undefined"){ window.console = {log: function(){}}; } var map = new BMap.Map("container"); map.centerAndZoom(new BMap.Point(116.403765, 39.914850), 5); var stdMapCtrl = new BMap.NavigationControl({type: BMAP_NAVIGATION_CONTROL_SMALL}) map.addControl(stdMapCtrl); map.enableScrollWheelZoom(); map.enableContinuousZoom(); function getBoundary(data){ var bdary = new BMap.Boundary(); bdary.get(data.split("-")[0], function(rs){ console.log(rs); var bounds; var maxNum = -1, maxPly; var count = rs.boundaries.length; for(var i = 0; i < count; j++){ var ply = new BMap.Polygon(rs.boundaries[i], {strokeWeight: 1, strokeOpacity:0.5,fillColor:data.split("-")[1],strokeColor: "#000000"}); map.addOverlay(ply); var arrPts = ply.getPoints(); if(arrPts.length > maxNum){ maxNum = arrPts.length; maxPly = ply; } } if(maxPly){ map.setViewport(maxPly.getPoints()); } }); } map.clearOverlays(); var datas = new Array("湖南-#ff0000","湖北-#ff5500","江西-#ffff00","重庆-#00ff00","贵州-#00ff55"); for(var i=0;i<datas.length;i++){ getBoundary(datas[i]); } </script> </body> </html>
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Google Map 相关实现示例(小弟尚未找到像百度地图一样通过 “地区名字” 获取坐标系 的方法)
http://gmaps-samples-v3.googlecode.com/svn/trunk/layers/layers.html
http://gmaps-samples-v3.googlecode.com/svn/trunk/cloud/cloud.html
http://home.provide.net/~bratliff/polycluster/v3/absurd.html
http://home.provide.net/~bratliff/polycluster/v3/alaska.html
http://www.usnaviguide.com/v3maps/ProjectedOverlayTest.htm
原文：http://www.cnblogs.com/liuming/archive/2012/02/01/2334305.html
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