[Gdal-dev] Re: gdalwarp error

Frank Warmerdam warmerdam at pobox.com
Fri Mar 23 12:54:29 EDT 2007

Huajun Zhang wrote:
> Thanks, Frank. It works now. But the cellsize of the image was changed a 
> little bit (e.g. cellsize of the original image is 14.25, the cellsize 
> is  changed to 14.33 after gdalwarp). Do you have any idea what the 
> problem is?


When reprojecting an image, gdalwarp needs to try and pick an apparent
appropriate pixel size in the new image which can vary a bit from the old

If you want to stay with the same pixel size you can specify it explicitly
when running gdalwarp by adding "-tr 14.25 14.25" to the commandline.

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

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