[Qgis-user] Change of object type

[José María Michia]

2008/12/5 Agustin Lobo <aloboaleu at gmail.com>:
> v.build did not made polygons out of the lines. The following worked:
>
>  v.type in=MMAMB_municipis out=delme4 type=line,boundary
>
> or using v.type.lb in the modules tree.

Lo siento por mi error, gracias Agustín por corregirme. Me surge una
duda. En ciertos casos, no sería conveniente o necesario utilizar
v.build previamente? antes de utilizar v.type? Me refiero a aquellos
casos en el que las líneas originales puedan tener errores de
topología.

Gracias y saludos
José María

> Gracias!
>
> (I think that a QGIS-only solution should be implemented, in fTools?)
>
> Agus
>
>
>> 2008/12/4 Goyo <goyodiaz at gmail.com>:
>>>
>>> El jue, 04-12-2008 a las 18:29 +0100, Agustin Lobo escribió:
>>>>
>>>> By some reason I've got a shp that should be a set of polygons, as
>>>> lines.
>>>> Is it possible with QGIS to automatically define the polygons and save
>>>> the layer
>>>> with the correct vector type (polygons)?
>>>>
>>>> Thanks
>>>>
>>>> Agus
>>>>
>>>
>>> I have done this before using the GRASS plugin. I don't remember the
>>> exact command.
>>
>> If you can run GRASS commands,  you can build polygons with something
>> like:
>>
>> v.build map=map_of_lines option=build
>>
>> Saludos
>> José María
>>
>>> Goyo
>>>
>
> Dr. Agustin Lobo
> Institut de Ciencies de la Terra "Jaume Almera" (CSIC)
> LLuis Sole Sabaris s/n
> 08028 Barcelona
> Spain
> Tel. 34 934095410
> Fax. 34 934110012
> email: Agustin.Lobo at ija.csic.es
> http://www.ija.csic.es/gt/obster
>