[GRASS-user] filtering raster outliers

Ken Mankoff mankoff at gmail.com
Tue Feb 16 08:15:10 PST 2016

On 2016-02-16 at 10:50, Ken Mankoff <mankoff at gmail.com> wrote:
> I'm also having trouble figuring out the exact syntax for the
> r.mapcalc approach.
> r.mapcalc "map_out = if(map_in * (map_in > ${p}), map_in, 0, 0)"

I figured out my mapcalc issue. Should be "map_in < ${p}".

It also seems that mapcalc is several times faster than the export/import method. I assume that means it is the correct approach for filtering like this.


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