If you look at the WMTS spec [1], section E.4, Page 105, the GoogleMapsCompatible tile matrix set is defined for zoom levels 0 to 18. At the higher zoom level, with a pixel size of 0.5971.. meters. It seems that who defined the tile matrix set, Google or OGC, didn't think the projection makes sense at a lower scale denominator.
So I wonder how can you seed past zoom level 18 to start with (oh, by looking at it I see the gwc seed form do present the option of seeding up to zoom level 21, but that's just because the other gridset, EPSG:4326 - or GlobalCRS84Scale as per the spec - is defined up to zoom level 21, and the gwc UI is not smart enough. Note there's a note on it though that it's a very basic interface that doesn't check for correctness). If you actually need to seed past zoom level 18 though, you can define your own GridSet, call it My900913 or something, and copy the resolutions defined in the spec up to zoom level 18, then double/half that depending on whether you're defining the gridset based on resolutions or scale denominators. Hope that helps, Gabriel [1] <http://www.opengeospatial.org/standards/wmts> On Wed, Feb 1, 2012 at 12:35 PM, Manzoor Ahmad Mubashir <[email protected]> wrote: > Hi, > > I am using GeoServer version 2.1.3 to generate tiles from a shapefile which > are then rendered by Google Maps API V3 in my application. I can see the > output of the shapefile until zoom level 18 without any problem but nothing > is shown after zoom level 19 and above. The tiles generated on the disk are > empty (blank) so the problem at hand has nothing to do with Google Maps. I > tried clearing the tiles cache and generated them again via seeding (from > the GeoWebCache settings) but in vain. The tiles were again empty. What > could be the wrong here? Is there any setting that I need to tweak for > GeoServer to start generating tiles for and above zoom level 19? Please > suggest. > > Mubashir > > ------------------------------------------------------------------------------ > Keep Your Developer Skills Current with LearnDevNow! > The most comprehensive online learning library for Microsoft developers > is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, > Metro Style Apps, more. Free future releases when you subscribe now! > http://p.sf.net/sfu/learndevnow-d2d > _______________________________________________ > Geoserver-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/geoserver-users > -- Gabriel Roldan OpenGeo - http://opengeo.org Expert service straight from the developers. ------------------------------------------------------------------------------ Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d _______________________________________________ Geoserver-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geoserver-users
