Hi, I suppose one can have what I call "segmented operations" with certain GRASS modules, for example:
- In *r.drain* I want make sure that certain points of the raster are mandatory stops; I know I can run r.cost multiple times (a to b; b to c; and so on). My question is how can I do it in a single command? Using the GRASS shell, I suppose - can someone give me a example? - the same question applies to r.los - can I calculate several visible areas with a single command? Thanks for any hints! Regards, André -- --------------------------------------------------------------- SOCIEDADE DE HISTÓRIA NATURAL - Departamento de Informação Geográfica Apartado 25 2564-909 Torres Vedras Portugal Sede e Biblioteca: rua Cavaleiros da Espora Dourada, 27A 2560 Torres Vedras Laboratório de Paleontologia e Paleoecologia: Polígono Industrial do Alto do Ameal 2565-641 Ramalhal http://alt-shn.blogspot.com www.alt-shn.org
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