On Sun, Dec 30, 2012 at 8:59 PM, Milton Cezar Ribeiro <miltinho.astrona...@gmail.com> wrote: > Hi Rashad > > I tested with the trunk svn, but apparently it still not worked to me. > Are you able to test with my datased? > > https://www.yousendit.com/download/UW16RE9zTkxlM1JBSXNUQw
What are the commands you used? I found r.drain input=custo_aux_cost output=custo_aux_cost_drain vector_points=map_target_pt You need to also provide a direction map with the indir option of r.drain. Markus M > > Thanks! > > miltinho > > 2012/12/27, Mohammed Rashad <mohammedrasha...@gmail.com>: >> Hi Milton, >> >> I think this fix will solve the problem[0]. For elevation data there might >> be cases where no path exists ie, only single pixel is the selected path. I >> had tested it by myself and it worked. >> >> Please apply the patch and let me know. >> >> If any problem comes in compilation or doing r.drain let me know. It will >> be great if you can share the test data you are using in case not working >> after applying the patch >> >> [0] http://trac.osgeo.org/grass/attachment/ticket/1840/r.drain.diff >> [1] http://trac.osgeo.org/grass/attachment/ticket/1840/drain.c >> >> >> On Thu, Dec 27, 2012 at 2:31 AM, Milton Cezar Ribeiro < >> miltinho.astrona...@gmail.com> wrote: >> >>> Hi Mohamed and Markus >>> >>> Mohamed, thanks for your reply, I will wait for a solution within GRASS >>> :-) >>> >>> Markus, thanks for your reply,. Sorry but I disagree a tiny bit, >>> because is expected that between a source and target I will find a >>> solution with the Least Cost path. Do you think that is there any >>> situation where a least cost between source and target will not be >>> found? Maybe if other software provide the soluction, although is not >>> the bestest option, I prefere receive one complete output than a >>> broken one. >>> >>> Happy new year! >>> >>> miltinho >>> >>> 2012/12/23, Markus Metz <markus.metz.gisw...@gmail.com>: >>> > On Sun, Dec 23, 2012 at 7:07 PM, Milton Cezar Ribeiro >>> > <miltinho.astrona...@gmail.com> wrote: >>> >> Dear all, >>> >> >>> >> I am running a least cost path analysis combining r.cost and r.drain. >>> >> But on some cases, when the least cost path between source and target >>> >> reach the border of my map, r.drain stop on that position, and target >>> >> point isn´t reached. >>> > >>> > This is correct because at the borders, the direction can not be >>> > determined, the path could lead out of the current region, you can not >>> > tell. >>> > >>> > Running on other softwares the algorithms the >>> >> source and target is connected using edges without problem. >>> > >>> > If in doubt, I would call it a bug in that other software. >>> > >>> >> >>> >> Any hint are welcome. >>> > >>> > Try to expand the current region >>> > >>> > Markus M >>> > >>> >>> >>> -- >>> Miltinho - m...@rc.unesp.br >>> Laboratório de Ecologia Espacial e Conservação - LEEC >>> Depto de Ecologia - UNESP - Rio Claro >>> Av. 24A, 1515- Bela Vista >>> 13506-900 Rio Claro, SP, Brasil >>> >>> Fone: +55 19 3526-9647 (office) 19 3526-9680 (lab) >>> Cel: 19 9853-3220 / 19 9853-5430 >>> >>> Depto Ecologia http://www.rc.unesp.br/ib/ecologia/ >>> >>> PG ECO & BIODIV >>> http://www.rc.unesp.br/ib/ecologia/posbiodiversidade/index.php >>> >>> CV >>> http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4792988H6&mostrarNroCitacoesISI=true&mostrarNroCitacoesScopus=true >>> >>> Google citations http://scholar.google.com/citations?user=OWX_2eAAAAAJ >>> _______________________________________________ >>> grass-user mailing list >>> grass-user@lists.osgeo.org >>> http://lists.osgeo.org/mailman/listinfo/grass-user >>> >> >> >> >> -- >> Regards, >> Rashad >> > > > -- > Miltinho - m...@rc.unesp.br > Laboratório de Ecologia Espacial e Conservação - LEEC > Depto de Ecologia - UNESP - Rio Claro > Av. 24A, 1515- Bela Vista > 13506-900 Rio Claro, SP, Brasil > > Fone: +55 19 3526-9647 (office) 19 3526-9680 (lab) > Cel: 19 9853-3220 / 19 9853-5430 > > Depto Ecologia http://www.rc.unesp.br/ib/ecologia/ > > PG ECO & BIODIV http://www.rc.unesp.br/ib/ecologia/posbiodiversidade/index.php > > CV > http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4792988H6&mostrarNroCitacoesISI=true&mostrarNroCitacoesScopus=true > > Google citations http://scholar.google.com/citations?user=OWX_2eAAAAAJ _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user