[GRASS-dev] Re: [GRASS GIS] #100: v.surf.rst also crashes on MacOS X

Markus Neteler neteler at osgeo.org
Wed Mar 26 09:51:53 EDT 2008

On Thu, Mar 20, 2008 at 3:10 PM, Patton, Eric <epatton at nrcan.gc.ca> wrote:
> On Thu, Mar 20, 2008 at 3:11 AM, GRASS GIS <trac at osgeo.org> wrote:
>  >>   You are misunderstanding what r.resamp.interp does. It does not "fill"
>  >>  null areas (like e.g. r.surf.idw or r.fillnulls). It resamples a map,
>  >>   calculating cell values by interpolating between the neighbouring cells,
>  >>   all of which must be non-null in order to get a non-null result.
>  Markus:
> >At this point we should improve the documentation:
>  >
>  >Current:
>  >"<EM>r.resamp.interp</EM> fills a grid cell (raster) matrix with
>  >interpolated values generated from a set of input layer data points."
>  >
>  >New:
>  >?
>  How about this:
>  "r.resamp.interp resamples an input raster map by interpolating between the neighboring
>  cells via one of nearest neighbor, bilinear, or cubic resampling algorithms. All cells
>  present in the neighborhood of the input raster cell must be non-null to generate a non-null
>  cell in the output raster map."

Submitted in slightly modified form to r.resamp.interp/description.html .


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