AW: [mapguide-users] MrSID problem: RasterIO skipped for odd windowor buffer size

[G.E.O.-Consulting / Hans Mörschell]

Hallo Frank,

thanks for your information.

As you recommended I started a gdalinfo on my MrSID files with the following
result:

the origin MrSID file has a coordinate shift in x direction, that means the
image_xy_origin is for example 10000.125/306999.875, but the sdw file has an
image origin of 760000.125/306999.875;

might there be a problem with the world file ??? how can I make sure, that
the coordinate system of the world file is used ???

Thanks and best regards, Hans


 
 
-----Ursprüngliche Nachricht-----
Von: mapguide-users-bounces at lists.osgeo.org
[mailto:mapguide-users-bounces at lists.osgeo.org] Im Auftrag von Frank
Warmerdam
Gesendet: Mittwoch, 20. Juni 2007 15:57
An: MapGuide Users Mail List
Betreff: Re: [mapguide-users] MrSID problem: RasterIO skipped for odd
windowor buffer size

G.E.O.-Consulting / Hans Morschell wrote:
> Hallo,
> 
>  
> 
> I installed the MGOS RC2 (WinXP) with the gdal patches for MrSID, images 
> are not displayed.
> 
>  
> 
> I have set the CPL_DEBUG on and I got the following result:
> 
>  
> 
> GDALOpen succeeds as MrSID for all images, but then I get the message:
> 
>  
> 
> RasterIO<> skipped for odd window or buffer size

Hans,

Normally this means a zeroed sized, negatively sized or off-raster area
was requested in the RasterIO().  The zero sized area can easily happen
in real use if you zoom in to a fraction of a pixel.

Were there any preceeding debug messages, perhaps indicating the window?

What is your map view extent?  What does gdalinfo report for the mrsid file?
gdalinfo is a commandline utility that is part of FWTools -
  http://fwtools.maptools.org/

Best regards,
-- 
---------------------------------------+------------------------------------
--
I set the clouds in motion - turn up   | Frank Warmerdam,
warmerdam at pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | President OSGeo, http://osgeo.org

_______________________________________________
mapguide-users mailing list
mapguide-users at lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/mapguide-users