[GRASS-user] interpolate raster map
hamish_b at yahoo.com
Thu May 22 08:06:45 EDT 2008
--- On Thu, 5/22/08, Rainer M Krug <r.m.krug at gmail.com> wrote:
> From: Rainer M Krug <r.m.krug at gmail.com>
> Subject: [GRASS-user] interpolate raster map
> To: grass-user at lists.osgeo.org
> Date: Thursday, May 22, 2008, 11:14 AM
> I have two raster maps, one (mapA) based on a raster map of
> a much
> lower resolution (see attached picture) and the other one
> is in the
> MASK (pink). I would like to do two things:
> 1) "smooth" mapA, so that it is not as grainy as
> it is now. I know
> that that will introduce error, but the error will be less
> then the edges based on the coarser resolution.
> 2) extrapolate to the areas not covered by mapA, but part
> of MASK.
> again - I am aware that this will introduce considerable
> error, but
> the same applies as in the previous case. So what I would
> like to do
> here, is essentially fill the edges with the values of the
> cells which have values.
> Any ideas how I can achieve this?
> I looked at resampling (for (1)), but it increases the edge
> data, which is not acceptable for me.
> Thanks a lot,
> Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc
> Biology, UCT), Dipl. Phys. (Germany)
> Plant Conservation Unit
> Department of Botany
> University of Cape Town
> Rondebosch 7701
> South Africa_______________________________________________
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