[OpenLayers-Users] [Geoserver-users] WMS overlaid on Google "spherical mercator" in OpenLayers

[Andrea Aime]

Andrew Murdoch ha scritto:
> Hello,
> 
> I'm cross-posting to the Geoserver and OpenLayers lists with this question.
> 
> I'm using Geoserver 1.6.0 RC2 and OpenLayers 2.5 with Firefox 2.0.0.11.  
> I'm trying to display a WMS layer overtop of Google background data 
> using the OpenLayers javascript client.  The Google data shows up fine 
> and I'm getting the topp:states WMS layer from Geoserver to show up, but 
> only half of the WMS states features show up at zoom level 1.  Only the 
> eastern states show up with a vertical line cutting north to south.  
> When I zoom in closer on the US, all the WMS features show up overlain 
> on the Google data.  It's almost as if at small "world-wide" scales, 
> there are too many tiles to display and the WMS is only partially displayed.
> 
> I've duplicated this behavior with other WMS layers from my Geoserver 
> installation.  At small "world-wide" scales, the WMS data is cut off.  
> When you zoom in, the WMS is displayed normally.
> 
> I've been using a modified copy of the "spherical-mercator.html" example 
> to get this far.  I can send in javascript code or screenshots if that 
> would be helpful.

Yep, known issue with GeoServer WMS renderer, it does not work
if the tile crosses the dateline:
http://jira.codehaus.org/browse/GEOS-1293

Cheers
Andrea