On Fri, Mar 1, 2013 at 2:42 PM, kapo coulibaly <kmcoulib at gmail.com> wrote: > Thank you all for your quick replies, > > I did find the GUI mentioned by Daniel. It works in Linux but is greyed out > in Wingrass! This is an unfortunately still open bug: http://trac.osgeo.org/grass/ticket/1737 perhaps also http://trac.osgeo.org/grass/ticket/1270 Markus