[GRASS-user] r.mapcalc(nulls into 0)

[Alberto Pettazzi]

Hi,

I think you should do

raster2=if(isnull(raster1),0,raster1)

El 11/07/12 14:02, Eloi Ribeiro escribió:
> Hi,
>
> I am trying to do something really simple but not finding the right 
> way to do it.
> I need to convert nulls into zeros. I have done this:
> /r.mapcalc "raster2 = if(raster1 = null(), 0, raster1)" /
> /r.mapcalc "raster2 = if(raster1 == null(), 0, raster1)" //
> /
> But this convert all cells into nulls.
>
> I have tried another approach with r.reclass, rules:
> null/null()/no data/nodata...=0
> 1=1
> 2=2
> 3=2
> 4=2
> 5=2
>
> No fun, all I get is an ERROR: null/null()/no data/nodata...=0
>
> What I'm doing wrong?
>
> Eloi Ribeiro
> GIS Analyst
> 39,45º -0,40º
> flavors.me/eloiribeiro <http://flavors.me/eloiribeiro>
>
>
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-- 

Alberto Pettazzi


MeteoGalicia - Departamento de Climatología y Observación

Consellería de Medio Ambiente, Territorio e Infraestruturas

Rúa de Roma, 6

15707 Santiago de Compostela. A Coruña


Teléfono: +34-881-999646


e-mail: alberto.pettazzi at meteogalicia.es 
<mailto:alberto.pettazzi at meteogalicia.es>


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