[GRASS-dev] Grass Variables/ Perl

["Peter Löwe"]

>%ENV gives you the environment variables,

>if ($ENV{GISBASE}){
>    &main();
>}
>else {
>    print "You have to run GRASS first!"
>}
>
>you can also read from stdin:
>
>@region = `g.region -g`

Hello Jachym,

that's true. However, neither `export GRASS_WIDTH=42` nor system "export GRASS_WIDTH=42" can be used to set the variables for later commands to make use of the settings (aka generate a huge PNG). Within the GRASS environment, the GRASS_HEIGHT/WIDTH will still default to 640/480.
A remarkably awkward workaround would be to create a shell-script from within the perl environment and run it later. but i believe theremust be a better way.

Peter
-- 
Dr. Peter Löwe

Diplom-Geograph

<loewe at geomancers.net>
<peter.loewe at gmx.de>





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