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Our landscape evolution module (r.landscape.evol) in addons includes code for this.
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<div class="">Michael<br class="">
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____________________</div>
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<font face="Helvetica" size="3" class="">C. Michael Barton</font></div>
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<font face="Helvetica" size="3" class="">Director, Center for Social Dynamics & Complexity </font></div>
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<font face="Helvetica" size="3" class="">Professor of Anthropology, School of Human Evolution & Social Change</font></div>
<div class=""><font face="Helvetica" size="3" class="">Head, Graduate Faculty in Complex Adaptive Systems Science</font></div>
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<font face="Helvetica" size="3" class="">Arizona State University</font></div>
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<font face="Helvetica" size="3" class=""><font class="">voice: </font><font class="">480-965-6262 (SHESC), 480-965-8130/727-9746 (CSDC)</font><br class="">
<font class="">fax: 480-965-7671 (SHESC), 480-727-0709 (CSDC)</font><br class="">
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<font face="Helvetica" size="3" class="">www: <a href="http://www.public.asu.edu/~cmbarton" class="">
http://www.public.asu.edu/~cmbarton</a>, <a href="http://csdc.asu.edu" class="">http://csdc.asu.edu</a></font></div>
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<div class="">On Apr 4, 2017, at 4:05 PM, <a href="mailto:grass-user-request@lists.osgeo.org" class="">
grass-user-request@lists.osgeo.org</a> wrote:</div>
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<span style="font-family: -webkit-system-font, 'Helvetica Neue', Helvetica, sans-serif; color: rgb(127, 127, 127);" class=""><b class="">From:<span class="Apple-converted-space"> </span></b></span><span style="font-family: -webkit-system-font, 'Helvetica Neue', Helvetica, sans-serif;" class="">Anna
Petrášová <<a href="mailto:kratochanna@gmail.com" class="">kratochanna@gmail.com</a>><br class="">
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<span style="font-family: -webkit-system-font, 'Helvetica Neue', Helvetica, sans-serif; color: rgb(127, 127, 127);" class=""><b class="">Subject:<span class="Apple-converted-space"> </span></b></span><span style="font-family: -webkit-system-font, 'Helvetica Neue', Helvetica, sans-serif;" class=""><b class="">Re:
[GRASS-user] hillslope position modules in GRASS?</b><br class="">
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<span style="font-family: -webkit-system-font, 'Helvetica Neue', Helvetica, sans-serif; color: rgb(127, 127, 127);" class=""><b class="">Date:<span class="Apple-converted-space"> </span></b></span><span style="font-family: -webkit-system-font, 'Helvetica Neue', Helvetica, sans-serif;" class="">April
4, 2017 at 4:05:27 PM MST<br class="">
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<span style="font-family: -webkit-system-font, 'Helvetica Neue', Helvetica, sans-serif; color: rgb(127, 127, 127);" class=""><b class="">To:<span class="Apple-converted-space"> </span></b></span><span style="font-family: -webkit-system-font, 'Helvetica Neue', Helvetica, sans-serif;" class="">Vishal
Mehta <<a href="mailto:vishalm1975@gmail.com" class="">vishalm1975@gmail.com</a>><br class="">
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<span style="font-family: -webkit-system-font, 'Helvetica Neue', Helvetica, sans-serif; color: rgb(127, 127, 127);" class=""><b class="">Cc:<span class="Apple-converted-space"> </span></b></span><span style="font-family: -webkit-system-font, 'Helvetica Neue', Helvetica, sans-serif;" class="">GRASS
user list <<a href="mailto:grass-user@lists.osgeo.org" class="">grass-user@lists.osgeo.org</a>><br class="">
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<div class="gmail_quote">On Apr 4, 2017 7:02 PM, "Vishal Mehta" <<a href="mailto:vishalm1975@gmail.com" class="">vishalm1975@gmail.com</a>> wrote:<br type="attribution" class="">
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<div class="">Hi all,<br class="">
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Is there a module that can be used to compute hillslope position from a DEM?<br class="">
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I'd like to check for associations between groundwater levels/drawdowns in a city against this kind of landscape organization..<br class="">
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<div class="">There is a 2015 article in which the authors used GRASS, various topo indices and a decision tree approach to do such a classification. I'm wondering if something more 'canned' is available..<br class="">
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Soil Sci. Soc. Am. J. 79:132–145<br class="">
doi:10.2136/sssaj2014.07.0287<br class="">
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Thanks,<br class="">
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Vishal<font color="#888888" class=""><br clear="all" class="">
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<div dir="auto" class="">Look at addon r.geomorphon, it's not exactly what you want but perhaps could be used for your application.</div>
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<div dir="auto" class="">Anna</div>
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<div class="">Vishal K. Mehta, PhD<br class="">
Sr. Scientist<br class="">
Stockholm Environment Institute - US<br class="">
133 D St Suite F<br class="">
Davis CA 95616<br class="">
<a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__www.sei-2Dus.org&d=DQMFaQ&c=AGbYxfJbXK67KfXyGqyv2Ejiz41FqQuZFk4A-1IxfAU&r=vxOW6PLS28MPea_dWUwPfRf71TAIziRDuFqWJimQN1I&m=VpyH6fMEsGa5d1We9kBkfJBQiuyiJKjApWDUJvQpjwU&s=bXRwDXHrJJApicIt9VLrXV_IlnJ8iDIqOwrawzY43HA&e=" target="_blank" class="">www.sei-us.org</a></div>
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