[英]How do i display all markers on google map even if latitude and longitude having same values?
[英]How to solve Google Map markers with same latitude and longitude?
目前,我正在为我的商家信息网站创建一个Google Map View,其中添加了多个标记,这些标记可从数据库中检索所有的经度和纬度。 现在我遇到了一个问题,该问题具有相同的纬度和经度标记。 我在网上搜索,找到了一种使用Marker Cluster的解决方案,但我对此一无所知,请帮忙。
这是我的代码,用于获取当前位置,并用不同的图标进行标记,并添加从数据库中检索经纬度的多个标记:
lat = position.coords.latitude;
lon = position.coords.longitude;
latlon = new google.maps.LatLng(lat, lon);
mapholder = document.getElementById('mapholder');
mapholder.style.height = '500px';
mapholder.style.width = '1300px';
var myOptions = {
center:latlon,zoom:13,
mapTypeId:google.maps.MapTypeId.ROADMAP,
mapTypeControl:false,
navigationControlOptions:{style:google.maps.NavigationControlStyle.SMALL}
}
var map = new google.maps.Map(document.getElementById("mapholder"), myOptions);
var infowindowforCurrentLoc = new google.maps.InfoWindow();
var image = 'https://developers.google.com/maps/documentation/javascript/examples/full/images/beachflag.png';
var marker = new google.maps.Marker({
draggable: true,
animation: google.maps.Animation.DROP,
position: latlon,
icon: image,
map: map,
});
marker.addListener('click', toggleBounce);
function toggleBounce() {
if (marker.getAnimation() !== null) {
marker.setAnimation(null);
} else {
infowindowforCurrentLoc.setContent('<h2>You are Here!</h2>');
infowindowforCurrentLoc.open(map, marker);
marker.setAnimation(google.maps.Animation.BOUNCE);
}
}
var markerr = new google.maps.Marker();
<?php
$filtering = $_GET["filtering"];
if($filtering=="condo"||$filtering=="commercial"){
$sql = "SELECT * FROM propertylisting WHERE propertytype='$filtering'";
}
else{
$sql = "SELECT * FROM propertylisting WHERE listingtype='$filtering'";
}
$result=mysql_query($sql);
$totallist = mysql_num_rows($result);
$tmpcount=0;
echo"var infowindow = new google.maps.InfoWindow(), markerr, i;
var markers=new Array(3);";
while($rows=mysql_fetch_array($result)){
echo"markers[".$tmpcount."]=new Array(3);
markers[".$tmpcount."][0]='".$rows['listingtopic']."';
markers[".$tmpcount."][1]= ".$rows['listinglatitude'].";
markers[".$tmpcount."][2]= ".$rows['listinglongitude'].";
";
$tmpcount=$tmpcount+1;
}
?>
for (i = 0; i < markers.length; i++) {
markerr = new google.maps.Marker({
position: new google.maps.LatLng(markers[i][1], markers[i][2]),
map: map
});
google.maps.event.addListener(markerr, 'click', (function(markerr, i) {
return function() {
infowindow.setContent(markers[i][0]);
infowindow.open(map, markerr);
}
})(markerr, i));
}
我认为您可以为此使用标记群集( https://googlemaps.github.io/js-marker-clusterer/src/markerclusterer.js )。 修改您的脚本,这样会创建标记:
var markers = [];
for (i = 0; i < markers.length; i++) {
var markerr = new google.maps.Marker({
position: new google.maps.LatLng(markers[i][1], markers[i][2]),
map: map
});
markers.push(markerr);
}
var markerCluster = new MarkerClusterer(map, markers);
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