[GRASS-user] export 3d vector line map to shp

[Martin Landa]

Hi,

I got problem exporting 3d GRASS vector map to Shapefile. I have a
vector map with 3d lines (contours).

$ .out.ascii isolines_reggio format=standard | head -n 20
ORGANIZATION:
DIGIT DATE:
DIGIT NAME:   martin
MAP NAME:     Output from v.overlay
MAP DATE:     Tue Sep 11 00:50:19 2007
MAP SCALE:    1
OTHER INFO:
ZONE:         0
MAP THRESH:   0.000000
VERTI:
L  20 1
 618866       949571.5625  100
 618824.8125  949549.6875  100
 618815.8125  949537.1875  100
 618820.8125  949524.6875  100
 618810.8125  949486.3125  100
 618774.5625  949423.6875  100
 618767.0625  949372.8125  100
 618746.375   949349.8125  100
 618728.8125  949360.3125  100

I tried to export the map using

$ v.out.ogr in=isolines_reggio dsn=./ olay=isolines_reggio

For testing...
$ v.in.ogr dsn=isolines_reggio.shp out=test -z

v.out.ascii test format=standard | head -n 20
ORGANIZATION:
DIGIT DATE:
DIGIT NAME:   martin
MAP NAME:
MAP DATE:     Tue Sep 11 19:46:07 2007
MAP SCALE:    1
OTHER INFO:
ZONE:         0
MAP THRESH:   0.000000
VERTI:
L  20 1
 618866       949571.5625  0
 618824.8125  949549.6875  0
 618815.8125  949537.1875  0
 618820.8125  949524.6875  0
 618810.8125  949486.3125  0
 618774.5625  949423.6875  0
 618767.0625  949372.8125  0
 618746.375   949349.8125  0
 618728.8125  949360.3125  0

The Z coordinate is lost...

According

http://gdal.org/ogr/drv_shapefile.html

I tried

v.out.ogr in=isolines_reggio dsn=./ olay=isolines_reggio lco=SHPT=ARCZ
ERROR 6: Unknown SHPT value of `ARCZ=YES' passed to Shapefile layer
creation.  Creation aborted.

ERROR: Cannot create layer

Thanks for any tip...

Martin

-- 
Martin Landa <landa.martin at gmail.com> * http://gama.fsv.cvut.cz/~landa *