How to snap nodes

[David D Gray]

GRASS wrote:
> 
> Hi all,
> 
> I imported some DXF's as follows:
> 
>         v.in.dxf dxf=a.dxf lines=7111,7114
>         v.in.dxf3d dxf=a.dxf lines=7111,7114
>         v.support map=a.7111 option=build
>         v.support map=a.7114 option=build
>         v.patch input=a.7111,a.7114 output=a
> 
>         v.in.dxf dxf=b.dxf lines=7111,7114
>         v.in.dxf3d dxf=b.dxf lines=7111,7114
>         v.support map=b.7111 option=build
>         v.support map=b.7114 option=build
>         v.patch input=b.7111,b.7114 output=b
> 
>         v.patch input=a,b output=ab
>         v.support map=ab option=build -s threshold=1
> 
> This failed to snap nodes.
> 
>         d.vect ab
> 
> draws two disconnected maps.
> 
> What's wrong?
> 
> Regards,
> Huidae Cho


Hi

Some thoughts:-

Is the snap distance enough? If it's not that, maybe try changing the
scale value in v.digit (to a small value like 200 or 50). At present
nodes will only snap to other nodes, not for example to lines. Perhaps
that is a thought for future development.

David