[Gvsig_english] gvSIG's extension topologia...

[Benjamin Ducke]

That's really great news.

We are currently trying hard to educate users about topological
correctness and this will come in very handy.

There is one thing I would love to see for topological editing of
polygons: if the user creates a new polygon "B" and one of the vertices
of "B" overlaps an existing polygon "A" in the same layer, then that
vertex should automatically be "snapped back" so that it "sits" exactly
on the boundary of "A", not its area. In such a case, additional
vertices may also have to be added to follow the boundary of "A".

This would prevent a lot of small digitizing errors that would otherwise
have to be cleaned up manually.

Cheers,

Ben


Manuel Madrid wrote:
> Hi Wolfgang and all.
> 
> This extension will provide gvSIG with some topology tools. Specifically 
> (sorry about the translation):
> 
> - Generate topology.
> - Show and modify topology.
> - Save and load topology.
> - Topology editing tools.
>     · Move geometries.
>     · Split geometries.
>     · Simplify geometries.
>     · Smooth polyline.
>     · Autocomplete poligons.
>     · Geometric info.
> - Topological geoprocessing.
>     · Reverse digitation direction.
>     · Simplify geometries.
>     · Convert a polygon geometries layer to a line geometries layer.
>     · Smooth lines.
>     · Delaunay triangulation / Thiessen polygons.
>     · Build.
>     · Clean.
>     · Batch.
> 
> We hope all of them are available soon in the devel builds.
> 
> Regards,
> Manuel.
> 
> Wolfgang Qual escribió:
>> Good morning, developers.
>> Recently, I discovered by accident that there will be another 
>> extension of gvSIG - the extension topologia. This is really 
>> interesting! Is it possible to estimate the release date of that 
>> extension? What will it include?
>> I am curious about this and it would be very cool if you could give us 
>> some information. :)
>>
>> Best regards
>> Wolfgang 
> 


-- 
Benjamin Ducke
Senior Applications Support and Development Officer

Oxford Archaeology Ltd
Janus House
Osney Mead
OX2 0ES
Oxford, U.K.

Tel: +44 (0)1865 263 800 (switchboard)
Tel: +44 (0)1865 980 758 (direct)
Fax :+44 (0)1865 793 496
benjamin.ducke at oxfordarch.co.uk




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