我目前有一个带有位置列表的SQL表,它们已填充到Google Map中。
我想像下面的演示中所示对标记进行聚类:http://google-maps-utility-library-v3.googlecode.com/svn/tags/markerclusterer/1.0/examples/advanced_example.html?
我的地图脚本如下:
<script src="http://maps.google.com/maps/api/js?sensor=false"
type="text/javascript"></script>
<script type="text/javascript">
//<![CDATA[
var customIcons = {
restaurant: {
icon: 'http://labs.google.com/ridefinder/images/mm_20_blue.png',
shadow: 'http://labs.google.com/ridefinder/images/mm_20_shadow.png'
},
bar: {
icon: 'http://labs.google.com/ridefinder/images/mm_20_red.png',
shadow: 'http://labs.google.com/ridefinder/images/mm_20_shadow.png'
}
};
function load() {
var map = new google.maps.Map(document.getElementById("map"), {
center: new google.maps.LatLng(51.854018, 0.974768),
zoom: 11,
mapTypeId: 'hybrid'
});
var infoWindow = new google.maps.InfoWindow;
// Change this depending on the name of your PHP file
downloadUrl("phpsqlajax_genxml3.php", function(data) {
var xml = data.responseXML;
var markers = xml.documentElement.getElementsByTagName("marker");
for (var i = 0; i < markers.length; i++) {
var name = markers[i].getAttribute("name");
var dayticket = markers[i].getAttribute("dayticket");
var clubmembership = markers[i].getAttribute("clubmembership");
var address = markers[i].getAttribute("address");
var contactdetails = markers[i].getAttribute("contactdetails");
var watertype = markers[i].getAttribute("watertype");
var disabledaccess = markers[i].getAttribute("disabledaccess");
var lastupdated = markers[i].getAttribute("lastupdated");
var type = markers[i].getAttribute("type");
var point = new google.maps.LatLng(
parseFloat(markers[i].getAttribute("lat")),
parseFloat(markers[i].getAttribute("lng")));
var html = "<h3><center>" + name + "</center></h3>" + "<b>Day Ticket: </b>" + dayticket + "</br>" + "<b>Club Membership: </b>" + clubmembership + "</br></br>" + "<b>Water Type: </b>" + watertype + "</br>" + "<b>Disabled Access: </b>" + disabledaccess + "</br>" + "<b>Contact Details: </b>" + contactdetails + "</br>" + "<b>Address: </b>" + address + "</br>" + "<b>Last Updated: </b>" + lastupdated;
var icon = customIcons[type] || {};
var marker = new google.maps.Marker({
map: map,
position: point,
icon: icon.icon,
shadow: icon.shadow
});
bindInfoWindow(marker, map, infoWindow, html);
}
});
}
function bindInfoWindow(marker, map, infoWindow, html) {
google.maps.event.addListener(marker, 'click', function() {
infoWindow.setContent(html);
infoWindow.open(map, marker);
});
}
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>
最佳答案
需要注意的几件事:
您将希望在脚本中包含集群器实用程序库,在这里:http://google-maps-utility-library-v3.googlecode.com/svn/tags/markerclusterer/1.0/src/markerclusterer.js
这里的文档(http://google-maps-utility-library-v3.googlecode.com/svn/trunk/markerclusterer/docs/examples.html)提供了一些有关如何实现群集器的良好示例。标记数据来自SQL,XML还是其他任何地方都无关紧要。创建新的标记对象时,需要能够将它们传递到MarkerClusterer对象。
关于javascript - 使用XML/SQL标记将集群添加到Google Map,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/18475223/