[postgis-users] importing 3d shapefiles

[Mark Wright]

I imported the shapefile back into grass and it turns out that it was
not a 3d shapefile. So I guess the 3rd dimention was lost on export.
However, I also tried exporting from grass directly into postgres with
v.out.ogr and got the same results. I know the geometry column in
postgres was a 2d geometry because the geometry_columns table had it
listed as 2d and the geometry column had a 2d constraint. Also
selecting z(startpoint(wkb_geometry)) always returns 0.

It exports fine to pov-ray. Too bad there isn't a pov2pgsql app.


Mark


On 12/26/05, Ivan Kautter <ivankautter at hotmail.com> wrote:
> Mark,
>
> Just out of curiosity, what was the specific shp2pgsql statement that you
> used and how were you able to confirm that the imported line is only 2d and
> not 3d.
>
> Also I am curious if you can confirm that a 3d shapefile was indeed output
> from GRASS.  I am assuming you used v.out.ogr and specified it with layer
> creation option ARCZ.
>
> Having no experience with these issues, I can't suggest a course of action,
> but it might be good to confirm for those who can assist you the steps that
> you took to create and import the 3d shapefile.
>
> Ivan Kautter