Thanks Carlos!!<br><br>milton<br><br><div class="gmail_quote">2009/7/28 Carlos Grohmann <span dir="ltr"><<a href="mailto:carlos.grohmann@gmail.com">carlos.grohmann@gmail.com</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;">
Just tested in a LatLong region. works fine.<br>
<br>
Carlos<br>
<br>
<br>
<br>
<br>
<br>
2009/7/28 Jarek Jasiewicz <<a href="mailto:jarekj@amu.edu.pl">jarekj@amu.edu.pl</a>>:<br>
<div><div></div><div class="h5">> try, I don't know I haven't LL location to test it<br>
> but it shoud work<br>
> program do not use any inforamtuon about units and units conversion<br>
><br>
> Jarek<br>
><br>
> Milton Cezar Ribeiro pisze:<br>
>><br>
>> Hi Jarek<br>
>><br>
>> Can use this on a LatLong mapset where my unit is not meters?<br>
>> Thanks for the effort!<br>
>><br>
>> milton<br>
>><br>
>> 2009/7/26 Jarek Jasiewicz <<a href="mailto:jarekj@amu.edu.pl">jarekj@amu.edu.pl</a> <mailto:<a href="mailto:jarekj@amu.edu.pl">jarekj@amu.edu.pl</a>>><br>
>><br>
>> Hi list!<br>
>><br>
>> I just finish first version of new grass module r.stream. Module<br>
>> is regular Grass module, written in C an has no addational<br>
>> dependencies. It was compiled with GRASS65 devel downloaded in<br>
>> last two week. Source code you can find here:<br>
>><br>
>> <a href="http://heretic.livenet.pl/heretic/r.stream.tar.gz" target="_blank">http://heretic.livenet.pl/heretic/r.stream.tar.gz</a><br>
>><br>
>> Module compiles and seems to work. Analysis was tested only on one<br>
>> dataset.<br>
>><br>
>> To compile it copy r.streams directory to your grassXX../raster/<br>
>> cd r.stream run make and make install<br>
>><br>
>> What module calculate:<br>
>> - strahler stream order<br>
>> - shreeve stream magnitude<br>
>> - class of topological elements of drainage networks<br>
>><br>
>> Module use r.watershed outputs: SDF flow direction and SDF stream<br>
>> network.<br>
>><br>
>><br>
>> Analysis of r.stream shall be run on same regions setings as<br>
>> r.watershed. If no, run g.region rast=your_dir_file first. For now<br>
>> module do not check if region and rasters are identical. It is<br>
>> planned to add in nearest feature. It also do not check if dirs<br>
>> and streams are SDF result. Threre are no addational description.<br>
>> It will be added after testing.<br>
>><br>
>> It works only on cells data. Floating points data are not allowed<br>
>> (and have no sense).<br>
>><br>
>> Module is quite fast. 3000 x3000 cells all three analysis runs no<br>
>> more than 30 s. on AMD 3800 2GB, Ubuntu 8.04<br>
>><br>
>> Module is part of comprehensive project which will add full Horton<br>
>> analysis and some addational terrrains analysis to Grass. More<br>
>> details in the feature. Any cooperation is welcome. The next<br>
>> module I plan is directional vectorisation of stream network.<br>
>><br>
>> For now module is available only form web address pointed below.<br>
>> After testing and removing critical errors it will be added to<br>
>> grass add-ons (or maybe to main branch?).<br>
>><br>
>> Any coments, improvements and critics is very welcome.<br>
>><br>
>> More advanced Grass developers: Please check my code. Its funny,<br>
>> but I don't know C.<br>
>> General code is based on GRASS r.topindex module (by Keith Beven<br>
>> and Huidae Cho, strongly modified)<br>
>> Strahler stream order algorithm from Saga GIS (by Victor Olaya,<br>
>> modified)<br>
>> Shreeve stream magnitude and class of topological network are my<br>
>> own ideas<br>
>><br>
>> Test and enjoy.<br>
>><br>
>> Jarek Jasiewicz<br>
>> Adam Mickiewicz University, Poznan<br>
>> Geoecology and Geoinformation Institute<br>
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>> <a href="http://lists.osgeo.org/mailman/listinfo/grass-user" target="_blank">http://lists.osgeo.org/mailman/listinfo/grass-user</a><br>
>><br>
>><br>
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<br>
<br>
</div><div class="im">--<br>
Carlos Henrique Grohmann - Geologist D.Sc.<br>
a.k.a. Guano - Linux User #89721<br>
ResearcherID: A-9030-2008<br>
<br>
<a href="http://digitalelevation.blogspot.com" target="_blank">http://digitalelevation.blogspot.com</a><br>
<br>
<a href="http://www.igc.usp.br/pessoais/guano" target="_blank">http://www.igc.usp.br/pessoais/guano</a><br>
_________________<br>
Can’t stop the signal.<br>
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