[Gvsig_english] Problem adding vertex to a polygon

[Francisco Puga]

Hi,

The link you are provinding is from "my own release" of OpenCADTools.
We already know that some cad tools from gvsig adds a new vertex over
the first, and for some tools it has been fixed in opencadtools, but i
think that still remains in others.

Cartolab will try to make an official release of OpenCADTools in the
near future. If someone is really interested in this release and can
collaborate in any form feel free to contact me or Cartolab. We are
also working in the integration of opencadtools in the gvSIG trunk but
some legal stuff must be accomplished first with the original founders
of the project.

El día 18 de noviembre de 2011 11:04, ernesto sferlazza
<e.sferlazza at gmail.com> escribió:
> Hello developers, I came up against a strange error (or bug) editing a
> shapefile of polygons.
> I tried to add a vertex in a side of a polygon. Once added the vertex,
> using "edit vertex" tool, then typing "A" (add) and finally clicking
> the new vertex, the resulting modified polygon contains, in addition
> to the new entered vertex, one more vertex, coincident with the last
> vertex of the original polygon.
> I report below what happens, using wkt format to describe polygon:
>
> # this is the original polygon:
> POLYGON ((
>        860.50 767.32,
>        926.70 401.02,
>        388.28 480.46,
>        860.50 767.32
>    ))
>
> # this is the modified polygon once added a new vertex
> POLYGON ((
>        860.5 767.32,
>        894.0667782294647 581.5872074705,
>        926.7 401.02,
>        388.28 480.46,
>        388.28 480.46,
>        860.5 767.32
>    ))
>
> # this is the modified polygon once added a further new vertex
> POLYGON ((
>        860.5 767.32,
>        894.0667782294647 581.5872074705,
>        926.7 401.02,
>        388.28 480.46,
>        388.28 480.46,
>        659.2341937930034 645.0568405223434,
>        388.28 480.46,
>        860.5 767.32
>    ))
>
> The problem occurs using gvSIG 1.11 final (build 1305) on windows XP and
> gvSIG desktop 2.0.0 (build 2040).
>
> No problem, instead, when I use on gvSIG 1.11 final the new CAD tool
> (substituting folder com.iver.cit.gvsig.cad), available at the link
> [1].
> Best regards
> Ernesto
>
> [1] http://dl.dropbox.com/u/2131623/com.iver.cit.gvsig.cad.zip
>
> --
> ing. Ernesto Sferlazza
> responsabile nodo provinciale di Agrigento del SITR Sicilia
> resp. gruppo Sistema Informativo Territoriale
> Provincia regionale di Agrigento
> sede istituzionale: piazza Aldo Moro, 1 - 92100 AGRIGENTO
> sede operativa: via Acrone, 27 - 92100 AGRIGENTO
> cell. 3392718463 (personale)
>        3316874296 (aziendale)
> tel. uff 0922593752
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-- 
Francisco Puga
Grupo de Desarrollo
Cartolab - Laboratorio de Ingeniería Cartográfica.
http://www.cartolab.es

ETS Ingeniería de Caminos, Canales y Puertos
Universidade da Coruña
Campus de Elviña - 15071 A Coruña (España)
(34)981167000 ext. 5493