Dear all, I am testing, trying, learning GRASS 7`s hydrology moduls at the moment. And I am very, very satisfied with the available tools. r.watershed managed to process a really big elevation model (150,000 x 120,000 pixels), which is amazing.
However, when I use r.hydrodem addon on the same big grid with 150,000 x 120,000 pixels (with the memory option) I get the following warning (and finally error) message: r.hydrodem input=dem_10m memory=10000 output=dem_10m _hydro Load elevation map 100% WARNING: segment_format(fd,1,-221837149,1,262144,16): illegal value(s) WARNING: seg_open(): illegal configuration parameter(s) Remove one cell extremas 100% Set edge points Segmentation fault (core dumped) Exactly the same command on a 45,000 x 20,000 pixel region works fine (and very fast btw.): Load elevation map 100% Remove one cell extremas 100% Set edge points 100% A* Search... 100% Processing 2641798 sinks 100% Write conditioned DEM 100% Any ideas? I can process the DEM in tiles (i.e. subdivided into major water regions), so there is a work around... Almost forgot to mention: I am using GRASS 7 Revision: 58048 on Ubuntu 12.04.2 LTS server and r.hydrodem installed through g.extension today. BTW. I tried to install all addons (through g.extension) and there were several moduls which did not compile successfully, should I try to collect a list of Addons with compilation problems (and error messages)? Cheers Stefan
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