Specifics of this projection are documented at SpatialReference.org: http://spatialreference.org/ref/user/google-projection/
And Charlie Savage has a good write-up of why it's not just Mercator: http://cfis.savagexi.com/articles/2006/05/03/google-maps-deconstructed Note, I have no idea how to add custom projections like this to Proj.4. I wonder if you would be able to add the WKT representation directly to your map? http://spatialreference.org/ref/user/google-projection/ogcwkt/ Jason -----Original Message----- From: Traian Stanev Subject: RE: [mapguide-users] Generating tiles for google maps Yes, you have to use Mercator. To make the tiles match perfectly across the whole world, you will need to use a custom Mercator rather than the default one in MapGuide (last time I did it, I had to hardcode the projection into MapGuide). I think that if you restrict yourself to a small region, you can get away with the Mercator that already exists in MapGuide and some tiny translation tweaks to make it all align perfectly. _______________________________________________ mapguide-users mailing list mapguide-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapguide-users
