[gdal-dev] Using a MapQuest TMS via GDAL

[Andre Vautour]

> Is the DataWindow just ignored here?
I am pretty sure the data window is actually interpreted as the tile 
extents of the service for the TMS mini driver. You'll notice that 
nothing else in the parameters could be used to georeference the tiles. 
I agree that "window" in this case is misleading and it has caused me 
confusion as well.

I assume it was done that way so that the raster's pyramid/quad-tree is 
aligned with the service's zoom levels. For non-tiled services (e.g. 
WMS), the data window is probably what you expect it to be.

I agree that warping/translating the data to the desired window is 
probably your best option,
André

On 2013-10-22 17:21, Jukka Rahkonen wrote:
> Chris Hanson <xenon <at> alphapixel.com> writes:
>
>
>> What is the proper process for requesting a DataWindow region
>> and getting a proper reoreferenced raster subset back?
> I am not sure about how changing the DataWindow size in the XML
> configuration file should work but anyway, it is not so good place to play.
> Instead, define the TMS source to cover the whole world as in
> http://www.gdal.org/frmt_wms_openstreetmap_tms.xml and control the area you
> want with the gdal_translate parameters http://www.gdal.org/gdal_translate.html
>
> I believe you want to use -projwin.
>
> -Jukka Rahkonen-
>
>
> _______________________________________________
> gdal-dev mailing list
> gdal-dev at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/gdal-dev