Failed watershed analysis on Grass
|Reported by:||mehmeto||Owned by:|
This is my first day with Grass GIS (version 6.4.2 for Windows). As I tried this tutorial the watershed analysis failed.
I carefully put in the parameters as specified on the tutorial.
The error message is:
(Thu Jul 18 14:10:00 2013) r.watershed elevation=elevation@PERMANENT basin=elev.basins stream=elev.streams threshold=10000 SECTION 1a (of 5): Initiating Memory. SECTION 1b (of 5): Determining Offmap Flow. SECTION 2: A * Search. SECTION 3: Accumulating Surface Flow with SFD. ERROR: G_calloc: unable to allocate 4 * 60175190 bytes at main.c:91 Subprocess failed with exit code 1 category information for [elev.basins] in [user1] missing or invalid category information for [elev.streams] in [user1] missing or invalid
I will be glad to receive some help with this as my aim is to do hydrological analysis with Grass. Please consider in your reply that I am a novice with this program and I am not a technical person.