Dear friends, I'm trying to use r.watershed to obtain dainage and stream map of a very large dem.. The region containing the dem is of around 260.000.000 of cells but masking out null cells (with a raster MASK) the number of residuals dem cells is of around 140.000.000. I have tried without the -m flag but the process stops after few minutes due to memory allocation problems (the computer has only 2 GB of RAM). Now I have started the process with the -m flag....
Do you have any suggestion to optimize the process? thanks Ivan -- Ti prego di cercare di non inviarmi files .dwg, .doc, .xls, .ppt. Preferisco formati liberi. Please try to avoid to send me .dwg, .doc, .xls, .ppt files. I prefer free formats. http://it.wikipedia.org/wiki/Formato_aperto http://en.wikipedia.org/wiki/Open_format Ivan Marchesini Department of Civil and Environmental Engineering University of Perugia Via G. Duranti 93/a 06125 Perugia (Italy) Socio fondatore GFOSS "Geospatial Free and Open Source Software" http://www.gfoss.it e-mail: [EMAIL PROTECTED] [EMAIL PROTECTED] tel: +39(0)755853760 fax (university): +39(0)755853756 fax (home): +39(0)5782830887 jabber: [EMAIL PROTECTED] _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
