Excellent! Those are fantastic. Thanks for the contribution. We are working on some stream assessments, and I hope to be able to get time to try these modules. I will be sure to provide feedback.<br><br>Great stuff!<br><br>
Mark<br><br><div class="gmail_quote">2009/8/27 Jarek Jasiewicz <span dir="ltr"><<a href="mailto:jarekj@amu.edu.pl">jarekj@amu.edu.pl</a>></span><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Dear grass users!<br>
<br>
I present next version of tools for hortonian analysis. Source code and tutorial are available here:<br>
<br>
<a href="http://heretic.livenet.pl/heretic/" target="_blank">http://heretic.livenet.pl/heretic/</a><br>
<br>
Currently following modules are available:<br>
- r.stream.order: to calculate Strahler, Horton, Shreve and main stream (Hack) ordering. That module is almost ready to use<br>
- r.stream.basins: calculate basins according users input. Read more on web page<br>
- r.stream.distance: calculate downslope distance path and elevation above to streams/outlets. That module is in early development stage, but works, and results seems good. But it may will change in the feature.<br>
-r.streams.stats: calculate hortonian statistics is not avilable: maybe in next few days.<br>
<br>
All three modules works fine on small dems (up to 20 millions cells). Only on powerful machines with at least 2-4GB RAM they handle avarage dems (up to 120 M cells). I have no information about largers dems (over 100M cells because I haven't so).<br>
<br>
Till I finish my work modules are available only from my web page. After I will absolutely sure that everything is OK, add vector capabilities and solve problems with massive dems (for LIDAR puropse) I will try to add them to GRASS add-ons.<br>
<br>
best regards<br><font color="#888888">
Jarek Jasiewicz<br>
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