百度,谷歌地图显示区域多轮廓示例
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
<!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>
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
