[GRASS-user] 3D TIN?

[Markus Neteler]

Stefania Merlo wrote:
> 
> Dear GRASS users,
> 
> I have a question about exporting TINs to dxf. I have successfully managed 
> to perform the export and opened the TIN files created with v.delaunay in 
> CAD. Problem is, the z value of the TIN points is 0 and my TIN is flat
> (not 
> what I wanted to achieve). Am I doing something wrong or is this what 
> should happen? Is there a command that would allow the export of 3D TINs? 
> Is this an export problem only or is the command v.delaunay not producing
> a 
> 3D file?
> 
> Hope my problem is clearly stated. Any suggestions on how to create and 
> export a 3D TIN for further editing in software external to GRASS is 
> welcome!
> 
> Yours
> 
> stefania merlo
> 
> University of Cambridge
> UK
> 

Hi Stefania,

I checked v.out.dxf and found that no 3DFACE support is there. This needs
to be added; I think it would be the inverse of
vector/v.in.dxf/add_3dface.c

Markus
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