[GRASS-dev] Unexpected EVI range from "i.vi"

Nikos Alexandris nik at nikosalexandris.net
Wed Jun 19 14:36:05 PDT 2013

Markus Metz wrote:
> > Anyhow, just to have a quick-check on "r.what", should I upload the bands
> > in question somewhere?  Would anyone have the time to explain/check why
> > r.what gives different results depending on the extent/resolution for the
> > same coordinates?  Which, might be expected, but why does "g.region
> > rows=1 cols=1" set the resolution to... see below:

> That explained Moritz. I would only add that you should align the
> region to the raster (not the raster's resolution, these are two
> different things), before using r.what, otherwise the raster lib will
> do some internal nn resamplng (if the region's resoltion is larger
> than the raster's resolution).

Right, thanks N

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