How many rows and columns are in the input map? Also include the exact command line statement you use to run the program.
Sincerely, chuck Chuck Ehlschlaeger, Geospatial Science Consultant PERTAN GROUP, http://pertan.com/ [EMAIL PROTECTED], 309-255-2727 http://chuck.ehlschlaeger.info/ -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Wednesday, January 23, 2008 7:15 AM To: [email protected] Subject: [GRASS-user] Use of r.watershed Hello All, I am new to GRASS but have been using GIS (mainly ESRI products) for quite a few years. I am trying to learn how to use GRASS to carry out hydrology related analyses. Currently, I am trying to use the r.watershed command to delineate the basins for a watershed. My question is, how long would you expect it to take to run? I am wondering if I am doing it wrong or if it just takes longer than I would expect. The DEM is about 170MB TIFF before I import it to GRASS. I have tried to run it a few times using different options, each time letting it run for 3 - 4 hours before killing it. I have tried both the -m and -4 flags. Any input would be appreciated. _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.19.9/1238 - Release Date: 1/22/2008 8:12 PM No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.19.9/1238 - Release Date: 1/22/2008 8:12 PM _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
