[Tilecache] TileCache - serving as untiled wms

Christopher Schmidt crschmidt at metacarta.com
Thu Feb 25 13:28:33 EST 2010


On Thu, Feb 25, 2010 at 05:42:01PM +0000, Duarte Carreira wrote:
> Hi Christopher.
> 
> Can you elaborate on combining TC + MapServer + GDAL to achieve this effect?

Use http://gdal.org/frmt_wms.html as a RASTER datasource in MS.

-- Chris

> Thanks,
> Duarte
> 
> -----Mensagem original-----
> De: Christopher Schmidt [mailto:crschmidt at metacarta.com]
> Enviada: quinta-feira, 25 de Fevereiro de 2010 17:43
> Para: Duarte Carreira
> Cc: tilecache at openlayers.org
> Assunto: Re: [Tilecache] TileCache - serving as untiled wms
> 
> On Thu, Feb 25, 2010 at 05:34:36PM +0000, Duarte Carreira wrote:
> > Hello all.
> >
> > I have been wondering about how use WMS-C or other tiled WMS services with apps that support only WMS (untiled).
> 
> I've considered this multiple times. In the past, I've combined TIleCache
> and MapServer/GDAL to do that, but adding the support to TileCache
> wouldn't be unreasonable. I would recommend some kind of flag
> to make sure that people don't accidentally hit the untiled stuff
> without being aware of it.
> 
> -- Chris
> 
> > How fast would it be to merge tiles and cut-out the resulting image to answer a standard untiled bbox request?
> >
> > The idea is that servers running TileCache would be able to also serve WMS clients. What's the benefit? Why not use the original WMS server? I'm guessing it would be faster and with lighter loads, even though TileCache would have to crunch several tiles together and clip the resulting image...
> > But there would be problems with resolution... since WMS clients don't care about fixed scales/resolutions. So you would serve ugly looking imagens in-between tile resolutions...
> >
> > Any thoughts?
> >
> > Duarte
> 
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> > Tilecache at openlayers.org
> > http://openlayers.org/mailman/listinfo/tilecache
> 
> 
> --
> Christopher Schmidt
> MetaCarta

-- 
Christopher Schmidt
MetaCarta



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