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<p class="MsoNormal">Dear all,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">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.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">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:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal">r.hydrodem input=dem_10m memory=10000 output=dem_10m _hydro<o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Load elevation map<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">100%<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">WARNING: segment_format(fd,1,-221837149,1,262144,16): illegal value(s)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">WARNING: seg_open(): illegal configuration parameter(s)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Remove one cell extremas<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">100%<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Set edge points<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Segmentation fault (core dumped)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Exactly the same command on a 45,000 x 20,000 pixel region works fine (and very fast btw.):<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Load elevation map<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">100%<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Remove one cell extremas<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">100%<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Set edge points<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">100%<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">A* Search...<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">100%<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Processing 2641798 sinks<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">100%<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Write conditioned DEM<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">100%<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Any ideas?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I can process the DEM in tiles (i.e. subdivided into major water regions), so there is a work around…<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">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.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">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)?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Cheers<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Stefan<o:p></o:p></span></p>
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