[GRASS-user] g.copy several map layers into one layer without overwriting .....

[Andranik Hayrapetyan]

Ok, thank you.

I will try it and inform about results here.

On Mon, Dec 10, 2012 at 4:17 PM, Glynn Clements <glynn at gclements.plus.com>wrote:

>
> Andranik Hayrapetyan wrote:
>
> > > r.mapcalc?
> >
> >
> > I don't know how to overlay rasters with r.mapcalc. can you, please be a
> > bit detailed?
>
>         r.mapcalc 'outmap = if(isnull(map1),map2,map1)'
>
> But this is just as inefficient as r.patch.
>
> There isn't currently an efficient way to join "slices" either using
> commands or the public C API.
>
> --
> Glynn Clements <glynn at gclements.plus.com>
>
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