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