[GRASS5] 3D boundaries in GRASS 5.7

[Radim Blazek]

Yes, faces are closed polygons, boundary is not shared. 

Radim
 

On Monday 25 October 2004 08:33, Jachym Cepicky wrote:
> Thank You,
> I realy need this only for NVIZ.
> However
>
> do I understand it right, that 2 faces can not have common boundary?
>
>     Something like
>
>     +----+----+
>
>     | F1 | F2 |
>
>     +----+----+
>
> By me, it works only, when every face has it's own boundary
>
>     +----++----+
>
>     | F1 || F2 |
>
>     +----++----+
>
> Jáchym
>
> On Mon, Oct 25, 2004 at 07:54:58AM +0200, Radim Blazek wrote:
> > This reguires 3D topology which is not supported. You can
> > import it as 'faces' ('F', closed polygons), but only few modules
> > supports faces. The faces are currently useful
> > only for visualisation in NVIZ.
> >
> > Radim
> >
> > On Sunday 24 October 2004 14:56, Jachym Cepicky wrote:
> > > Hallo,
> > >
> > > I'm trying to import some ascii file, which contains 2 squares. The
> > > squares are looking like this:
> > >
> > >     (the numbers are x,y,z coordinates)
> > >
> > >   133 +-----+ 233
> > >
> > >
> > >   122 +-----+ 222
> > >
> > >
> > >   111 +-----+ 211
> > >
> > >   sideways:
> > >
> > >              /
> > >             /
> > >
> > > This is no problem, but when I try to get the upper square to  vertical
> > > position, so:
> > >
> > >   123 +-----+ 223
> > >
> > >
> > >   122 +-----+ 222
> > >
> > >
> > >   111 +-----+ 211
> > >
> > >   sideways:
> > >
> > >
> > >         /
> > >
> > > and enven when I try to get to be inclined to the other site:
> > >
> > >   113 +-----+ 213
> > >
> > >
> > >   122 +-----+ 222
> > >
> > >
> > >   111 +-----+ 211
> > >
> > >   sideways:
> > >
> > >         \
> > >         /
> > >
> > > v.in.ascii does not import them correctly (Number of incorrect
> > > boundaries
> > >
> > > :   7)
> > >
> > > This problem is _only_ by boundaries, lines are working without
> > > problem.
> > >
> > > I'm sending the ascii file, ready to be imported via v.in.ascii. Just
> > > set your region to n=10 e=10 s=-10 w=-10
> > >
> > > Is there  some way, how to create vertical boundaries or boundaries,
> > > which are "one under the other"?
> > >
> > > Thanks
> > >
> > > Jáchym