[GRASS-user] digitizer

2013-12-13 Thread Martin Album Ytre-Eide
Hello all. I have been trying the digitizer in 6.4.2, and I am having several difficulties. I am working with a polygon map, and as a test, I am trying to create a polygon which I try split into four smaller polygons. First I divide it in half and then a divide one of the new halves in two.

Re: [GRASS-user] Extraction 3D vectors ridges/Thalweg from raster DEM ?

2013-12-13 Thread image
Hello, Thank you very much for your reply. I made some tests following your recommandations. For information, the surface of my raw raster DEM is 15.000 km². Resolution : 1 pixel X pixel Y = 30 meters. (SRID 2154 UTM). 1/r.watershed: the main input parameter seems to be the minimum size for

Re: [GRASS-user] Extraction 3D vectors ridges/Thalweg from raster DEM ?

2013-12-13 Thread Micha Silver
Hi On 12/13/2013 01:14 PM, image wrote: Hello, Thank you very much for your reply. I made some tests following your recommandations. For information, the surface of my raw raster DEM is 15.000 km². Resolution : 1 pixel X pixel Y = 30 meters. (SRID 2154

Re: [GRASS-user] Extraction 3D vectors ridges/Thalweg from raster DEM ?

2013-12-13 Thread image
Hello, And thank you again for your help. I have a last little question. I succeed in generating with grass vector 3D. I would like now export it to shapefile3D. Do you know how to do that? Thanks. -- View this message in context:

Re: [GRASS-user] Extraction 3D vectors ridges/Thalweg from raster DEM ?

2013-12-13 Thread Micha Silver
As far as I know, the shapefile format does not really support 3D vectors. On 12/13/2013 05:41 PM, image wrote: Hello, And thank you again for your help. I have a last little question. I succeed in generating with grass vector 3D. I would like now

Re: [GRASS-user] Extraction 3D vectors ridges/Thalweg from raster DEM ?

2013-12-13 Thread image
Ok thanks. And acording to you, is it possible to add the field HeightZ to my vector3D Grass generated? Thanks? -- View this message in context: http://osgeo-org.1560.x6.nabble.com/Extraction-3D-vectors-ridges-Thalweg-from-raster-DEM-tp5093957p5094181.html Sent from the Grass - Users

Re: [GRASS-user] Cannot change directory via GRASS command console

2013-12-13 Thread PB
Hi Helmut - no joy with your suggestion. When I use ls or pwd it shows I'm still in the /osgeo4w/bin directory. Does it perhaps have something to do with the fact that its bundled with qgis2? PB -- View this message in context:

Re: [GRASS-user] Extraction 3D vectors ridges/Thalweg from raster DEM ?

2013-12-13 Thread Micha Silver
On 12/13/2013 06:33 PM, image wrote: Ok thanks. And acording to you, is it possible to add the field HeightZ to my vector3D Grass generated? Yes, you do this as follows: v.db.addcol map=your vector map columns="x_coord double precision, y_coord

Re: [GRASS-user] Cannot change directory via GRASS command console

2013-12-13 Thread Helmut Kudrnovsky
no joy with your suggestion. When I use ls or pwd it shows I'm still in the /osgeo4w/bin directory. please provide more information about what are you doing exactly, used commands, used environment (osgeo4w shell or osgeo4w msys shell), QGIS standalone, osgeo4w bundled QGIS, etc. ... without

Re: [GRASS-user] digitizer

2013-12-13 Thread Vaclav Petras
On Fri, Dec 13, 2013 at 6:03 AM, Martin Album Ytre-Eide martin.album.ytre-e...@nrpa.no wrote: Hello all. I have been trying the digitizer in 6.4.2, and I am having several difficulties. I am working with a polygon map, and as a test, I am trying to create a polygon which I try split into