-------- Original-Nachricht -------- > Datum: Fri, 28 Jan 2011 12:56:27 +0100 > Von: Martin Landa <[email protected]> > An: Johannes Radinger <[email protected]> > CC: [email protected] > Betreff: Re: [GRASS-user] simple Grass.script python script, how to?
> Hi, > > 2011/1/28 Johannes Radinger <[email protected]>: > > After reading the grass-website about python scripts, I still don't know > how to start. I just want to create a .py file which i than want to run. > > > > This python script should do following simple grass command: > > > > v.to.rast input=river output=river_raster use=val value=1 --o > > but how does a pyhton script look like for this command? > > use run_command from `core` module [1]. > > grass.run_command('v.to.rast', overwrite = True, input = 'river', > output = 'river_raster', use = 'val' value = 1) > > > I first need to define my location and my mapset and I have to import or > define somehow the variable river. How do I set the region? In Grass I > just do g.region vect=river res=10 save=region_river. > > same as above use run_command(). Thank you for your first hints, but there are still a lot of problems for me at the beginning. First i still don't know how to create the location and mapset (coordination system) and I don't know how the things work with the parser. I have an existing mapset in a defined location set by GRASS GIS (inside the programme) and there is this vector-file stored. Now I tried to write a script: import sys from grass.script import core as grass def main(): grass.run_command('g.gisenv', set=options["MAPSET=C:\Users\MyName\Documents\Grass GIS\River_Location\River"]) grass.run_command('g.region', vect=options['River_GK'], res=options[10] save=options['River_Region']) grass.run_command('v.to.rast', overwrite=options[True], input='River_GK', output='river_raster', use=options['val'], value=options[1]) sys.exit() if __name__ == "__main__": options, flags = grass.parser() main() But nothing happens....I think there are a lot of things missing or wrong, but I can't find any nice describtion of a 'how to' for beginners. thanks J > > Martin > > [1] > http://grass.osgeo.org/programming7/namespacepython_1_1core.html#af6691d41ff96f1e0f8c6c1822c6b808c > > -- > Martin Landa <landa.martin gmail.com> * http://geo.fsv.cvut.cz/~landa -- Sicherer, schneller und einfacher. Die aktuellen Internet-Browser - jetzt kostenlos herunterladen! http://portal.gmx.net/de/go/atbrowser _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
