[gdal-dev] gdla wms tilecache

[Christopher Schmidt]

On Fri, Feb 20, 2009 at 06:18:08PM +0100, Wolfgang Lahr wrote:
> Hello list,
> 
> I am having a hard time accessing a TileCache (v2.10) layer with the GDAL
> (1.6) WMS driver. The cache was built from an UMN MapServer WMS. I can
> access the tiled layer without any problem using OpenLayers. But when
> I try to access the data via gdal (MapServer or gdal_translate), I can
> see an image - however, the north-south alignment of the tiles seems
> messed up, though the east-west direction aligns fine.
> 
> Thanks for any hints
> 
> Wolfgang
> 
> This is what gdal_info says:
> Band 1 Block=256x256 Type=Byte, ColorInterp=Undefined
>   Overviews: 32768x27264, 16384x13632, 8192x6816, 4096x3408, 2048x1704, 1024x852, 512x426
> Band 2 Block=256x256 Type=Byte, ColorInterp=Undefined
>   Overviews: 32768x27264, 16384x13632, 8192x6816, 4096x3408, 2048x1704, 1024x852, 512x426
> Band 3 Block=256x256 Type=Byte, ColorInterp=Undefined
>   Overviews: 32768x27264, 16384x13632, 8192x6816, 4096x3408, 2048x1704, 1024x852, 512x426

These seem odd -- like you might have your configuratio mixed up.
Generally speaking, TileCache tiles would be the same size in x/y
directions... 

Regards,
-- 
Christopher Schmidt
MetaCarta