我有一个Google Map(使用API V3),我需要在其中设置标记聚类。基本上标记位置是通过JSON加载的,它返回问题(1或2),纬度和经度。
我尝试设置群集,但即使JSON调用实际返回点,地图上也没有显示任何内容。我想出了以下内容:
var map;
function myMap(){
var latlng = new google.maps.LatLng(35.94, 14.37);
var mapOptions = {
zoom: 10,
center: latlng,
panControl: false,
mapTypeControl: false,
mapTypeId: google.maps.MapTypeId.ROADMAP,
scaleControl: false,
streetViewControl: false,
overviewMapControl: false,
zoomControl: true};
map = new google.maps.Map(document.getElementById("map"), mapOptions);
loadMarkers();
}
function loadMarkers() {
var mcOptions = {gridSize: 50, maxZoom: 15};
var issueSevereMarkers = [];
var issueSlightMarkers = [];
markerIssueHigh = new google.maps.MarkerImage("img/icn_issue_high.png",
new google.maps.Size(10.0, 10.0),
new google.maps.Point(0, 0),
new google.maps.Point(5.0, 5.0)
);
markerIssueMedium = new google.maps.MarkerImage("img/icn_issue_medium.png",
new google.maps.Size(10.0, 10.0),
new google.maps.Point(0, 0),
new google.maps.Point(5.0, 5.0)
);
var issuePoints = $.ajax({
type: 'GET',
url: 'http://www.mydomain.com/php/markers.php?&jsoncallback=?',
dataType: 'JSONp',
timeout: 5000,
success: function(data) {
$.each(data, function(i,item){
if (item.Issue == 1) {
// If severely congested
var latLng = new google.maps.LatLng(item.Latitude, item.Longitude);
var issueSevereMarker = new google.maps.Marker({'position': latLng});
issueSevereMarkers.push(issueSevereMarker);
} else if (item.Issue == 2) {
// If slightly congested
var latLng = new google.maps.LatLng(item.Latitude, item.Longitude);
var issueSlightMarker = new google.maps.Marker({'position': latLng});
issueSlightMarkers.push(issueSlightMarker);
}
});
var markerClusterSevere = new MarkerClusterer(map, issueSevereMarkers);
var issueSlightMarkerCluster = new MarkerClusterer(map, issueSlightMarkers);
},
error: function(data) {
}
});
}
基本上我正在做的是从JSON获得结果,如果问题是类型1,我将一个引脚添加到issueSevereMarkers数组,否则我将它添加到issueSlightMarkers数组。这应该使用标记的点加载数组。我不确定我在那里做错了什么。
我还有一个问题是,当标记被分组时,群集器基本上会返回一个自定义图标。当我放大并查看单个标记时,如何设置标记以使用markerIssueHigh和markerIssueMedium图像?
我正在使用Clustere for the V3(http://google-maps-utility-library-v3.googlecode.com/svn/trunk/markerclusterer/docs/reference.html)
答案 0 :(得分:1)
要实际使用自定义图标,您需要在google.maps.Marker构造函数
中引用它们 if (item.Issue == 1) {
// If severely congested
var latLng = new google.maps.LatLng(item.Latitude, item.Longitude);
var issueSevereMarker = new google.maps.Marker({position: latLng,
icon:markerIssueHigh});
issueSevereMarkers.push(issueSevereMarker);
} else if (item.Issue == 2) {
// If slightly congested
var latLng = new google.maps.LatLng(item.Latitude, item.Longitude);
var issueSlightMarker = new google.maps.Marker({position: latLng,
icon:markerIssueMedium});
issueSlightMarkers.push(issueSlightMarker);
}
没有看到任何显而易见的事情,这里有一个link到一个带有clusterer的工作地图(从XML而不是JSON获取数据)。
此similar question会向群集添加自定义标记。