[GRASS-user] Downscaling rasters (resampling to LOWER resolution)
nikos.alexandris at felis.uni-freiburg.de
Thu Jun 19 07:06:03 EDT 2008
On Wed, 2008-06-18 at 13:10 -0700, Dylan Beaudette wrote:
> On Wednesday 18 June 2008, Paulo Marcondes wrote:
> > Hi,
> > What would be the recommended way to downsample a raster?
> > my region resolution is currently 100m, say I want to resample my
> > rasters at 300m.
> > Why would I want to do that? Well, currently the data is too rough,
> > but filtering may introduce some artifacts.
> > I know I'll loose some information with the downscaling, but that is
> > precisely what I want, because I deem the roughness to be just noise.
> > I am not sure if just filtering would do the same.
> > what would be the best way to achieve this?
> > thanks.
> r.resamp.stats (>=GRASS 6.3)
What about cubic upscaling and then back to your original resolution?
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