[Tilecache] WMS getMap interface

[Simone Gadenz]

Thanks Christopher. I tried to set up the service with the configuration you
suggested but i should have set the wrong parameters as it returns back only
one tile stretched accordingly to the dimension or errors.  But I am using a
projected reference system and it is also strange that, having a square
geographic extent, I cannot have only one single tile at the level 0 of the
cache but a 2 by 2 tiles structure. Can be this the main problem? I tryes to
set up the following parameters

<TileCountX>2</TileCountX>
<TileCountY>2</TileCountY>

but I have back errors.

Is there any place i can read a description of the parameters?

Cheers

Simone

2009/9/15 Christopher Schmidt <crschmidt at metacarta.com>

> On Tue, Sep 15, 2009 at 04:39:00PM +0200, Simone Gadenz 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.
>
> This should work. Did you try one of the example configurations?
>
>  http://gdal.org/frmt_wms_metacarta_wmsc.xml
>
> As a RASTER type datasource in MapServer should let you request any WMS
> extent and have it fill the data using the TileCache backend. (Oh,
> but that WMS service is down, so that doesn't really let you demonstrate;
> but still, if you have an EPSG:4326 map, that file shoudl be easy to
> adapt).
> I'll try and get that server back up later today or tomorrow morning.
>
> > 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?
>
> Possibly, but I am not in favor of adding image mosaicing to TileCache;
> I think you would be best to try to get GDAL+MapServer working rather
> than changing the way TileCache works in this way.
>
> (There are, I believe, at least 3 different files called WMS.py.)
>
> Changing this would require changing a significant amoutn of core
> infrastructure of TileCache to accomodate for this use case.
>
> REgards,
> --
> Christopher Schmidt
> MetaCarta
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/tilecache/attachments/20090916/e62f12f1/attachment.html