[Tilecache] WMS getMap interface

[Christopher Schmidt]

On Tue, Sep 15, 2009 at 08:06:28AM -0700, Josh Livni wrote:
> I am not aware of any WMS servers that let you query (via WMS) for an image
> of arbitrary extent, and use tiles (local or remote) as source data.

MapServer with GDAL and the WMS driver will let you do this.

> The only thing I've personally come across that seems like it might fill the
> bill is ws-compose (part of modest maps codebase).  With ws-compose.py
> running as a service, you can basically give it some arbitrary extent and
> image size and a service provider for the tiles, and it will get the
> appropriate tiles and stitch them together.
> 
> You may want to take a look at the branch that is within
> http://github.com/mikelmaron/paperwalking for a version that has some
> ability to pass in service provider info via the url request (tho not using
> wms syntax).  This version also lets you stack different providers' tiles on
> top of eachother (kinda like cascading wms).
> 
>  -Josh
> 
> 
> On Tue, Sep 15, 2009 at 7:39 AM, Simone Gadenz <gadenz at gmail.com> wrote:
> 
> > Hello!
> >
> > I am looking for a WMS server that can consume a TC cache and provide
> > images of an arbitrary extent.
> >
> > According to the documentation each tile can be called using a WMS syntax.
> > For the short test I have done there is no possibility of calling images
> > with an arbitrary extent through that interface.
> >
> > I found GDAL has a minidriver for accessing WMS-C caches but again for the
> > test it seems it works only for accessing a single tile. I might be wrong
> > since i did not understand fully the configuration.
> >
> > Going to the point, I would like to understand how hard would be to
> > implement a WMS getmap interface into the TileCache, and in case what is the
> > best strategy. I saw a WMS.py under the service folder. is thet the right
> > point to start?
> >
> > Thanks
> >
> > S
> >
> >
> >
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> > Tilecache at openlayers.org
> > http://openlayers.org/mailman/listinfo/tilecache
> >
> >

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-- 
Christopher Schmidt
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