Convert lat/lon to pixels and back

Question

I\'m using google maps in my application, and I have a webserver with a databse filled with lat/lon values. I want to mark them on the map, but I also want to cluster them toget

Answer 1

Using Google Maps API v3:

var latLng = // your position object here
var projection = map.getProjection();
var bounds = map.getBounds();
var topRight = projection.fromLatLngToPoint(bounds.getNorthEast());
var bottomLeft = projection.fromLatLngToPoint(bounds.getSouthWest());
var scale = Math.pow(2, map.getZoom());
var worldPoint = projection.fromLatLngToPoint(latLng);
return [Math.floor((worldPoint.x - bottomLeft.x) * scale), Math.floor((worldPoint.y - topRight.y) * scale)];