[Qgis-user] Split concentric polygons with a unique function

[Bernhard Ströbl]

Hi,

you can use the Digitizing Tools Plugin "Cut with polygon from another 
layer" tool to achieve this. Load the layer twice into QGIS one is for 
editing, the other to cut with.
Backup your data until you know how the tool works.

Bernhard

Am 27.05.2014 11:05, schrieb Paolo Antonelli:
> i'm apologize, I meant to say a difference
>
>
> 2014-05-27 10:44 GMT+02:00 G. Allegri <giohappy at gmail.com
> <mailto:giohappy at gmail.com>>:
>
>     What do you mean with "splitting"?
>     Do you mean perform difference? E.g. make polygon id=1 become a
>     polygon with a hole defined by polygon with id=2?
>     Or do you mean splitting into several layers?
>
>     giovanni
>
>
>     2014-05-27 10:39 GMT+02:00 Paolo Antonelli
>     <geol.paoloantonelli at gmail.com <mailto:geol.paoloantonelli at gmail.com>>:
>
>         Hi,
>
>         i have a polygonal shapefile consists of 10 concentric areas.
>         The column ID of this shp identifies these 10 polygons.
>
>
>         Immagine in linea 1
>
>
>
>         There is a feature that allows you to split each polygon based
>         on the remaining polygons, using the field ID?
>         In this case, for several reason, I cannot use "Delete ring"
>
>         Many thanks,
>         paolo
>
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>
>     --
>     Giovanni Allegri
>     http://about.me/giovanniallegri
>     Twitter: https://twitter.com/_giohappy_
>     blog: http://blog.spaziogis.it
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>
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>
>
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