[gdal-dev] Resampling.

[Frank Warmerdam]

Belaid MOA wrote:
> Hi everyone,
>   I am new to GDAL and I need some help on how to do re-sampling 
> (programmatically).
> I have 30mx30m Geotiff images and I'd like to resample them into 25mx25m 
> Geotiff images.
> 
>  Any help on this is very appreciated.

Belaid,

One approach to do this would be a command like:

  gdalwarp -tr 25 25 input.tif output.tif

This resamples to 25x25 meter pixels with the default (nearest neighbour)
resampling kernel.  You might also want to use a fancier resampling kernel,
such as cubic convolution:

  gdalwarp -r cubic -tr 25 25 input.tif output.tif

More details are available at:

   http://www.gdal.org/gdalwarp.html

Best regards,
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