[GRASS-user] some issues with r.mapcalc logical AND

[Glynn Clements]

Carlos Grohmann wrote:

> I'm having some issues with r.mapcalc.
> 
> For instance, this works:
> 
> if(mapA, 1, null())
> 
> which could be read as " if mapA is True, then 1, else null()"
> 
> but this doesn't:
> 
> if(mapA && mapB, 1, null())
> 
> which, to me, could be read as " if mapA is True AND mapB is True (at
> the same place), then 1, else null()"
> 
> this gives me:
> Incorrect argument types to function and()
> Parse error
> 
> 
> can I use these True/False conditions?

Both arguments need to be integers.

-- 
Glynn Clements <glynn at gclements.plus.com>