Hello Grass user,
I would like to use v.vol.rst in Grass 6 but when I try to produce an elevation
map, I have this following error message:
Warning: there are points outside specified region--ignored 42 points (total
points: 42)
ERROR: zero points in the given region!
I think I have to define a 3D region with g.region but I don't know how.
If someone can help me?
Thanks, Claire.
hi,
On Fri, Jul 15, 2005 at 08:47:51AM +0000, Claire Mautalen wrote:
Hello Grass user,
I would like to use v.vol.rst in Grass 6 but when I try to produce an elevation
map, I have this following error message:
Warning: there are points outside specified region--ignored 42 points (total
points: 42)
ERROR: zero points in the given region!
I think I have to define a 3D region with g.region but I don't know how.
If someone can help me?
Thanks, Claire.
I thing, the only thing, you have to do is to define the 3th dimesion:
g.region e= w= n= s= t= b= res3=
e.g.
g.region rast=some_raster_map t=2000 b=0 res3=5
sets region from raster map "some_raster_map" with 'z' dimension from 0
to 2000 meters with resolution in all directions of 5 meters.
you can also define your region afer your points map:
g.region vect=your_points t=2000 b=0 res=5
Jachym
P.S. For producing elevation map (pixel, not voxel (volume pixel)) use
v.surf.rst, this works in 2D region.
--
Jachym Cepicky
e-mail: jachym.cepicky@centrum.cz
URL: http://les-ejk.cz
GPG: http://les-ejk.cz/gnupg_public_key/