我在下面有这个代码,它从谷歌地图上绘制一条来自XML文件的坐标。 但是我希望它显示第一个坐标和最后一个带位置标记的坐标。我设法做到这一点,没有按照这里的步骤绘制线:
https://developers.google.com/maps/articles/phpsqlajax_v3?csw=1
但似乎无法整合2.即绘制线并在开始和结束时放置标记。
我确定它只是一小部分代码我必须添加下面已有的代码,但是我正在破坏我的火车试图解决它。任何帮助将不胜感激。
<!DOCTYPE html >
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<title>PHP/MySQL & Google Maps Example</title>
<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?sensor=false"></script>
<script type="text/javascript">
//<![CDATA[
var customIcons = {
restaurant: {
icon: 'http://labs.google.com/ridefinder/images/mm_20_blue.png'
},
bar: {
icon: 'http://labs.google.com/ridefinder/images/mm_20_red.png'
}
};
function load() {
var point;
var flightPlanCoordinates=new Array();
var map = new google.maps.Map(document.getElementById("map"), {
center: new google.maps.LatLng(50.431, -3.202),
zoom: 9,
mapTypeId: google.maps.MapTypeId.ROADMAP,
mapTypeControl: false,
mapTypeControlOptions: {
style: google.maps.MapTypeControlStyle.HORIZONTAL_BAR
},
navigationControl: true,
navigationControlOptions: {
style: google.maps.NavigationControlStyle.SMALL
}
});
downloadUrl("phpsqlajax_genxml.php", function(data) {
var xml = data.responseXML;
var markers = xml.documentElement.getElementsByTagName("marker");
for (var i = 0; i < markers.length; i++) {
point = new google.maps.LatLng(
parseFloat(markers[i].getAttribute("lat")),
parseFloat(markers[i].getAttribute("lng")));
flightPlanCoordinates[i]=point;
}
var flightPath = new google.maps.Polyline({
path: flightPlanCoordinates,
strokeColor: "#FF0000",
strokeOpacity: 1.0,
strokeWeight: 2
});
flightPath.setMap(map);
});
}
function downloadUrl(url, callback) {
var request = window.ActiveXObject ?
new ActiveXObject('Microsoft.XMLHTTP') :
new XMLHttpRequest;
request.onreadystatechange = function() {
if (request.readyState == 4) {
request.onreadystatechange = doNothing;
callback(request, request.status);
}
};
request.open('GET', url, true);
request.send(null);
}
function doNothing() {}
//]]>
</script>
</head>
<body onload="load()">
<div id="map" style="width: 500px; height: 300px"></div>
</body>
</html>
答案 0 :(得分:0)
在上面发布的代码中,您永远不会将标记添加到地图中,这可以通过以下代码完成:
var marker = new google.maps.Marker({
map: map, //The Map Object
position: point //The location of the Marker
});
您需要在遍历GPS点时将此语句放入for循环中,如果是第一次迭代或循环的最后一次迭代,则添加标记。你可以像在你发布的例子中那样在循环之后绘制折线。