Hi guys!
I got a SHP 3d with countour line at 25m and using this,i had to create a dem;
I imported the shp using v.in.ogr and enabling the flag for 3d shp and this is
the v.info output:
[..]
Map Scale: 1:1
Map format: native
Type of Map: Vector (level: 2)
Number of points: 0 Number of areas: 0
Number of lines: 2918 Number of islands: 0
Number of boundaries: 0 Number of faces: 0
Number of centroids: 0 Number of kernels: 0
Map is 3D: 1
Number of dblinks: 1
[..]
The associated table got element like those one:
id | cat | id | igds_layer | eq_lvls | altitude
1 1 0 .... 5 100m (the value of the cl)
Doing a query on the vector map i noticed this anywhere:
map: 'cdl25m'
mapset: 'PERMANENT'
feature type: Line
length: 4008.907401
Line height: 0.000000 <== Is this ok with 3d file?
Then I started v.surf.rst with this vector (after setting the res to 20):
v.surf.rst input=cdl25m layer=0 dmin=0.5 elev=dem20 tension=90
But the raster output has got all cell with 0 altitude...what i am missing?
Thx
Luca
--
"E' molto più bello sapere qualcosa di tutto, che tutto di una cosa (Blaise
Pascal)."
GENTOO-GIS Development Team
jabber: casagrande@jabber.linux.it
try not to use the 3d flag and then simply use v.surf.rst defining the
column it must use for the interpolation....
v.surf.rst input=..... output=... zcolumn=nomecolonna ..... ...... ....
hope this help
Il giorno mer, 22/02/2006 alle 13.24 +0000, Luca Casagrande ha scritto:
--
Ivan Marchesini
Department of Civil and Environmental Engineering
University of Perugia
Via G. Duranti 93/a
06125
Perugia (Italy)
e-mail: marchesini@unipg.it
ivan.marchesini@gmail.com
tel: +39(0)755853760
fax: +39(0)755853756
On Wed, 22 Feb 2006 13:24:43 +0000
Luca Casagrande <luca.casagrande@gmail.com> wrote:
Hi guys!
I got a SHP 3d with countour line at 25m and using this,i had to
create a dem; I imported the shp using v.in.ogr and enabling the flag
for 3d shp and this is the v.info output:
[..]
Map Scale:
1:1 Map format:
native
Type of Map: Vector (level:
2) Number of points: 0 Number of
areas: 0 Number of lines: 2918
Number of islands: 0 Number of boundaries: 0
Number of faces: 0 Number of centroids: 0
Number of kernels: 0 Map is 3D:
1 Number of dblinks: 1
[..]
The associated table got element like those one:
id | cat | id | igds_layer | eq_lvls | altitude
1 1 0 .... 5 100m
(the value of the cl)
Doing a query on the vector map i noticed this anywhere:
map: 'cdl25m'
mapset: 'PERMANENT'
feature type: Line
length: 4008.907401
Line height: 0.000000 <== Is this ok with 3d file?
Maybe it is 3D but all the objects have 0 elevation?... Can you
verify that the z coordinate of your shapefile is other than 0 in some
other program? Then we could blame Grass (or OGR).
Maciek
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