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

[Richard McDonnell]

under Vector=>Data Management=>Split Vector Layer. It allows you to 
specify a unique Field to split the vector on. They don't appear to be 
concentric, more one on top of the other, one method would be to add a 
ring, also make the shapefile transparent, this will show areas which 
are not islands/rings.
Hope this answers your question.
Regards,

Richard.


On 27/05/2014 09:39, Paolo Antonelli wrote:
> Hi,
>
> i have a polygonal shapefile consists of 10 concentric areas. The 
> column ID of this shp identifies these 10 polygons.Â
>
>
> Immagine in linea 1
>
>
>
> There is a feature that allows you to split each polygon based on the 
> remaining polygons, using the field ID?Â
> In this case, for several reason, I cannot use "Delete ring"
>
> Many thanks,
> paolo
>
>
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