[OpenLayers-Users] OT: TileCache problems...
cplists at gmail.com
Tue Jan 30 11:41:05 EST 2007
Resending to the list without the example image as my original message has
been trapped in a moderation process due to its size...
On 1/29/07, Corey Puffalt <cplists at gmail.com> wrote:
> Thanks for your reply.
> On 1/26/07, Christopher Schmidt <crschmidt at metacarta.com> wrote:
> > [...]
> > > a) My first issue is that some of the tiles outside the normal bbox of
> > my
> > > layer are rendered strangely. The first tile to the left of the bbox
> > of the
> > > layer appears to be a duplicate of the one to the right. The tiles
> > below
> > > the normal bbx of the layer appear to be duplicates (for the most
> > part) of
> > > the tiles above. This behavior persists with metaTiling on or off.
> > > Everything looks fine without TileCache.
> > That's an interesting problem. When you right click on the misbehaving
> > tiles, do they appear to be tiles which simply got placed in the wrong
> > place by OpenLayers? Which version of OL are you using? If it's 2.3-rc2,
> > you might be running into http://trac.openlayers.org/ticket/480 .
> I'm running an older version of OpenLayers (v1.0). The BBOXes specified
> look fine when I check the URLs for the misbehaving tiles. I've attached an
> example image. Like I said, this doesn't happen when OpenLayers talks to
> GeoServer directly so I'm positive the problem isn't with OpenLayers.
> > If you look at the GeoServer logs, do you see anything which indicates
> > that here might have been something going awry? typically, what this
> > means is "I made a request, and got nothing back", which often happens
> > in error conditions. Because TileCache will generate images outside the
> > bounding box of the layer, it's possible that GeoServer is sayin "no
> > thanks" -- do these issues go away as you zoom in farther?
> I've checked the GeoServer logs but everything looks ok there. I have
> noticed the broken images seem to mainly appear on tiles that straddle the
> bbox but they're not broken consistently. Once I'm zoomed in so nothing is
> rendered outside the bbox everything seems to render fine. Maybe the
> problem is in my version of python or the python-imaging library?
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