[postgis-users] importing 3d shapefiles

[Paul Ramsey]

You could also use the ogrinfo tool from the OGR library to query the  
shape file and confirm the 3dness of it.

P

On 26-Dec-05, at 8:36 PM, Mark Wright wrote:

> 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
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