Hi folks,<br><br>I have a quick troubleshooting question. I'm trying to run r.watershed to extract stream segments and I'm receiving the following error;<br><br>GRASS 6.4.0RC5+39438 (ccarleton.minanha.utm):~ > r.watershed elevation=aster_srtm_dem_filled@CloudRemoval threshold=10 stream=aster_srtm_stream memory=300 <br>
SECTION 1a (of 5): Initiating Memory.<br>SECTION 1b (of 5): Determining Offmap Flow.<br> 100%<br>SECTION 2: A * Search.<br> 100%<br>SECTION 3: Accumulating Surface Flow.<br> 100%<br>SECTION 4: Watershed determination.<br>
Segmentation fault<br>WARNING: Subprocess failed with exit code 35584<br>WARNING: category information for [aster_srtm_stream] in [geophys] missing or invalid<br><br>I haven't been able to find something in the mailing lists about this, but if you know of somewhere that I can find a solution I'd appreciate the link. I'm running GRASS 6.4 RC5 on Ubuntu LTS 10.04 with a Dell Precision T7500 Workstation. The region settings are as follows;<br>
<br>projection: 1 (UTM)<br>zone: 16<br>datum: wgs84<br>ellipsoid: wgs84<br>north: 1942292.77488498<br>south: 1798172.56898554<br>west: 174812.49733566<br>east: 382055.4579663<br>nsres: 15.00002143<br>
ewres: 15.00021429<br>rows: 9608<br>cols: 13816<br>cells: 132744128<br><br>The actual DEM is much smaller than this (a composite ASTER/SRTM DEM) and I have 12GB of memory so I'd be surprised if this was a memory problem. Before I start working with GDB or other in-depth debugging I was hoping someone would have a short answer for this already. Thanks for your time,<br>
<br>Chris<br>