[GRASS-user] Why does v.split convert 3D vector to 2D?

[Markus Neteler]

On Sun, Mar 7, 2010 at 9:10 PM, Martin Landa <landa.martin at gmail.com> wrote:
> Hi,
>
> 2010/3/7 Markus Neteler <neteler at osgeo.org>:
>> cd v.split/
>> grep open * | grep new
>> main.c:    Vect_open_new(&Out, out_opt->answer, 0);
>>
>>> Is this intended behavior?
>>
>> Certainly not ideal. I don't know if changing to
>>
>>  Vect_open_new(&Out, out_opt->answer, WITH_Z);
>>
>> would be sufficient (of course recompile after that). If you could
>> provide a test case with the Spearfish or North Carolina test
>> datasets, I could try if you aren't able to compile GRASS yourself
>> to test above suggestion.
>
> should be fixed in r41335 (synchronized with trunk). Please test it. Martin

... for the list record, correction to my suggestion:
    Vect_open_new(&Out, out_opt->answer, Vect_is_3d(&In));
(obviously, open in 3D only when needed).

v.overlay is a similar candidate but maybe more complicated.

Markus