关于google地图轨迹，描点轨迹图的问题啊，急，帮帮忙啊。。

var polyline = new GPolyline([
    new GLatLng(37.4419, -122.1419),
    new GLatLng(37.4519, -122.1519),
    new GLatLng( 37.4619, -122.1819)
], "#FF0000", 10);
map.addOverlay(polyline);这个中间部分，怎么变成数组。。我有很多个点。

解决方案 »

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在google地图上画线条可以用Google Maps API中的折线叠加层
http://code.google.com/intl/zh-CN/apis/maps/documentation/javascript/overlays.html#Polylines<!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 runat="server">
    <title></title>
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>
<script type="text/javascript">
function initialize() {
var myOptions = {
zoom: 16,
center: new google.maps.LatLng(30.575504, 104.058922),
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
// 这里填上轨迹的经纬坐标，或者ajax从后台读取
var trackPoints = [
new google.maps.LatLng(30.575504, 104.058922),
new google.maps.LatLng(30.575512, 104.058968),
new google.maps.LatLng(30.575520, 104.058968),
new google.maps.LatLng(30.575527, 104.058968),
new google.maps.LatLng(30.575537, 104.058968),
...
];

var trackPath = new google.maps.Polyline({
path: trackPoints,
strokeColor: "#FF0000", // 线条颜色
strokeOpacity: 1.0, // 线条透明度
strokeWeight: 2 // 线条粗细
}); trackPath.setMap(map);
}
</script>
</head>
<body onload="initialize()">
    <form id="form1" runat="server">
<div id="map_canvas" style="width:1000px; height:700px;"></div>
    </form>
</body>
</html>
[c#]
var templatlng = '';
                for (var i = 0; i < ers.length; i++) {
                    var templl = new GLatLng(parseFloat(ers[i].getAttribute("lat")), parseFloat(ers[i].getAttribute("lgn")));
                    if (i < ers.length - 1) {
                        templl = templl + ",";
                    }
                    templatlng += templl;                    if (i % 10 == 0) {
                        //标识
                        var latlng = new GLatLng(parseFloat(ers[i].getAttribute("lat")), parseFloat(ers[i].getAttribute("lgn")));
                        var newMarker = new GMarker(latlng);
                        me.startListener_(); // 启动监听
                        //me.map_.addOverlay(newMarker); //加载定位标识
                    }
                }
                //alert(templatlng);
                //var polyline = new GPolyline([new GLatLng(30.575504, 104.058922), new GLatLng(30.575512, 104.058968), new GLatLng(30.575520, 104.058968)], "#FF0000", 5);
                var polyline = new GPolyline([templatlng], "#FF0000", 5);
                map.addOverlay(polyline);
[/c#]为什么没效果呢。。。这样组合
var templatlng = '';
   for (var i = 0; i < ers.length; i++) {
   var templl = new GLatLng(parseFloat(ers[i].getAttribute("lat")), parseFloat(ers[i].getAttribute("lgn")));
   if (i < ers.length - 1) {
   templl = templl + ",";
   }
   templatlng += templl;   if (i % 10 == 0) {
   //标识
   var latlng = new GLatLng(parseFloat(ers[i].getAttribute("lat")), parseFloat(ers[i].getAttribute("lgn")));
   var newMarker = new GMarker(latlng);
   me.startListener_(); // 启动监听
   //me.map_.addOverlay(newMarker); //加载定位标识
   }
   }
   //alert(templatlng);
   //var polyline = new GPolyline([new GLatLng(30.575504, 104.058922), new GLatLng(30.575512, 104.058968), new GLatLng(30.575520, 104.058968)], "#FF0000", 5);
   var polyline = new GPolyline([templatlng], "#FF0000", 5);
   map.addOverlay(polyline);
为什么这样就不行呢？！
我用了这个，页面显示的是空白的啊- 我今天也试过了
好像是 <script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>
这句不行
你用的第2版API，google已经弃用API V2, 建议你用V3来写
下面的图就是根据你的数据用上面的代码显示出来的效果，没有问题
完成了。。读取的xml的数据。<!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 runat="server">
    <title></title>
    <script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>
    <script type="text/javascript">
        var xmlname = "";
        var cenlat = "30.575504";
        var cenlgn = "104.058922";
        getxmlname(); //获取xml文件名
        function initialize() {
            var myOptions = {
                zoom: 16,
                center: new google.maps.LatLng(cenlat, cenlgn),
                mapTypeId: google.maps.MapTypeId.ROADMAP
            };
            var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
            // 这里填上轨迹的经纬坐标，或者ajax从后台读取
            /*
            var trackPoints = [
            new google.maps.LatLng(30.575504, 104.058922),
            new google.maps.LatLng(30.575512, 104.058968),
            new google.maps.LatLng(30.575520, 104.058968),
            new google.maps.LatLng(30.575527, 104.058968),
            new google.maps.LatLng(30.575537, 104.058968)
            ];
            */
            var trackPoints = new Array();
            var xdoc = new ActiveXObject("Microsoft.XMLDOM");
            xdoc.async = "true";
            xdoc.load(xmlname);
            var nodes = xdoc.getElementsByTagName("coor");
            for (var i = 0; i < nodes.length; i++) {
                if (i == 0) {
                    cenlat = nodes[i].getAttribute("lat");
                    cenlgn = nodes[i].getAttribute("lgn");
                }
                trackPoints[i] = new google.maps.LatLng(nodes[i].getAttribute("lat"), nodes[i].getAttribute("lgn"));
            }
            //alert(trackPoints);
            var trackPath = new google.maps.Polyline({
                path: trackPoints,
                strokeColor: "#FF0000", // 线条颜色
                strokeOpacity: 1.0, // 线条透明度
                strokeWeight: 3 // 线条粗细
            });            trackPath.setMap(map);
        }
        function getxmlname() {
            var xdoc = new ActiveXObject("Microsoft.XMLDOM");
            xdoc.async = "true";
            xdoc.load('defaultmapdata.xml');
            nodes = xdoc.getElementsByTagName("filename");
            xmlname = nodes[0].getAttribute("name")
            //alert(xmlname);
        }
    </script>
</head>
<body onload="initialize()" style="margin: 0px; padding: 0px;">
    <form id="form1" runat="server">
    <div align="center" id="map_canvas" style="margin: 0px; padding: 0px; margin-top: 4px;
        margin-left: 4px; height: 760px;">
    </div>
    </form>
</body>
</html>
请问XML文件的格式是怎么样的？
大神，能把XML文件发上来吗？