[GRASS-dev] Location and mapset name variables

[Pedro Roma]

So it's possible also to use in r.mapcalc expressions? That is great.
I have tested in Bash Script If conditions and it works just fine.

By the way, is it also possible to use g.gisenv in a Script to change MAPSET
or LOCATION without loosing messing image processing, I mean loosing path
the Input and output data?
Thank you
Pedro

On Wed, Feb 3, 2010 at 10:06 PM, Glynn Clements <glynn at gclements.plus.com>wrote:

>
> Pedro Roma wrote:
>
> > > > I'm developing a few scripts but a few r.mapcalc lines will depend on
> the
> > > > location and mapset. I mean, I will have different factors for
> different
> > > > Locations and mapsets.
> > > > Is there any variables with location names and mapsets?
> > > > And is it possibvle to use in if setences in GRASS Bash scripts or
> even
> > > in
> > > > PERL Scripts? (I suppose So)
> > >
> > > You can query GRASS variables using g.gisenv. You can set shell
> > > variables with e.g.:
> > >
> > >        MAPSET=`g.gisenv get=MAPSET`
> >
> > Ok this is the easiest way to retrieve Location and Mapset in a Script
> > right?
>
> Yes.
>
> > And I can use it in a If sentence without any problems?
>
> The shell expands variables within double-quoted strings and within
> here documents, so you can use e.g.:
>
>        r.mapcalc " ... $MAPSET ..."
> or:
>        r.mapcalc <<EOF
>        ...
>        ... $MAPSET ...
>        ...
>        EOF
>
> --
> Glynn Clements <glynn at gclements.plus.com>
>
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