On Fri, Dec 13, 2013 at 4:47 PM, Micha Silver mi...@arava.co.il wrote:
As far as I know, the shapefile format does not really support 3D vectors.
To my knowledge you can write out the 3D SHAPE file right away:
http://grass.osgeo.org/grass64/manuals/v.out.ogr.html
-z Create 3D output if input is
Hello,
Sorry to disturb you again. But when i type the command, i have an error
message saying : The file is not found.
Please see below the SS. It's strange beacause settings seems ok (location,
mpaset,db).
http://osgeo-org.1560.x6.nabble.com/file/n5094409/SS_errormessage.jpg
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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
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
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.
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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
Ok thanks.
And acording to you, is it possible to add the field HeightZ to my vector3D
Grass generated?
Thanks?
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http://osgeo-org.1560.x6.nabble.com/Extraction-3D-vectors-ridges-Thalweg-from-raster-DEM-tp5093957p5094181.html
Sent from the Grass - Users
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
Dear all,
From my Raster DEM, i would like extract Thalweg and Drainage divide
(ridges) 's 3D vectors.
According to you, is it possible to do that with grass?
In advance, Thank you.
Regards.
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On 12/12/2013 15:47, image wrote:
Dear all,
From my Raster DEM, i would like extract Thalweg and Drainage divide
(ridges) 's 3D vectors.
According to you, is it possible to do that with grass?
Certainly
First use the r.watershed module to create streams and basins (rasters)
from your DEM.
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