[OpenLayers-Users] WMS layering onto OSM problems (some tiles show, others don't)

[christopher.schmidt at nokia.com]

On Jun 16, 2010, at 1:26 PM, ext Jefferson Heard wrote:

> Well, the problem that I thought I had turns out not to be the case.  Yes, the requests are being made with the right projection.  No problems there.  
> 
> The problem is that the tiles aren't being layered in, or at least not all of them.  I start with a fully zoomed out, 256x256 single tile of all of OSM, and I can see the layering there.  The next zoom in as well.  The third zoom level, I get the data layered into the tile that includes the eastern seaboard, britain, and bits of western europe, and I only get that tile.  Zooming beyond that, none of the tiles show up.  
> 
> Using the GeoServer layer preview, reprojecting the bounding box, and asking for SRS EPSG:900913, I get all the tiles like I expect them.  I'm not sure what's different about the request I'm making in my application rather than in the GeoServer layer preview.  


I bet you don't have a maxExtent on your map.

OL.Map("map", {
 maxExtent: new OpenLayers.Bounds(-20037508.34,-20037508.34,20037508.34,20037508.34)
})

Should help.

> -- Jeff
> 
> 
> 
> On Jun 16, 2010, at 1:12 PM, Ian Turton wrote:
> 
>> On Wed, Jun 16, 2010 at 12:00 PM, Jefferson Heard
>> <jefferson.r.heard at gmail.com> wrote:
>>> Right, but GeoServer can; those servers can reproject my tiles for me, but I can't seem to figure out how to adjust the WMS request that OpenLayers is making.
>> 
>> If you set your map projection correctly then all the WMS requests
>> will use that projection by default. No further intervention should be
>> necessary on your part.
>> 
>> From your original mail though it isn't obvious which layers are on GeoServer?
>> 
>> Ian
>> -- 
>> Ian Turton
> 
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Regards,
-- 
Christopher Schmidt
Nokia