On Fri, Dec 5, 2008 at 1:55 AM, Markus Metz <markus_metz at <a href="http://gmx.de">gmx.de</a>> wrote:<br>> I took the request for MFD support in r.watershed by Helena and Dylan to<br>> heart and implemented it, but still need a few more days to clean up the<br>
> code, then I want to submit it as r.watershed2.mfd to grass-addons.<br>><br>> A first result for flow accumulation is here:<br>> <a href="http://markus.metz.giswork.googlepages.com/rw2_mfd_large.jpg">http://markus.metz.giswork.googlepages.com/rw2_mfd_large.jpg</a><br>
> This output has been calculated from elev_lid1972_1m in the North<br><p>> Carolina sample dataset.</p><p>Markus, this is absolutely amazing! I was just testing a new version of my erosion simulation module (r.landscape.evol) in whic I had incorporated the new r.watershed, and I was getting the "linear artifacts" that Helena mentioned in my long term (100 cycle) runs. I was experimenting with neighborhood median smoothing to amelorate these effects, and had just determined that a 5x5 median smoothing window worked the best, even though it adds ~12 seconds per cycle to the run time. But that may all be irrelevant now that you have implemented MFD into r.watershed! I can;t wait to test this new functionality of r.watershed in r.landscape.evol, I'm expecting it to produce fantastic results!</p>
<p></p><p>Cheers,</p><p>Isaac Ullah</p><p></p><p>-- <br></p><br>Isaac I Ullah, M.A.<br><br>Archaeology PhD Student,<br>ASU School of Evolution and Social Change<br><br>Research Assistant,<br>Mediterranean Landscape Dynamics Project<br>
***************************************************<br><a href="mailto:isaac.ullah@asu.edu">isaac.ullah@asu.edu</a><br><a href="mailto:ullah@archaeologist.com">ullah@archaeologist.com</a><br><br><a href="http://www.public.asu.edu/~iullah">http://www.public.asu.edu/~iullah</a><br>
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