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百度和谷歌地图显示区域轮廓示例

2013-02-03 09:31 531 查看

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
原文：http://www.cnblogs.com/liuming/archive/2012/02/01/2334305.html

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