[Qgis-user] How to delete a ring?

[Marco Hugentobler]

Hi Carlos,

It is not (yet) possible to delete rings. At the moment, QGIS does not delete 
vertices from rings if there are only three of them (to avoid geos 
exceptions). However, it doesn't consider that there may be rings that 
already have less than three points (that's the reason for the crash I 
think).

I created two tickets for this on track, one for the crash and another one for 
the possibility to delete rings.

Regards,
Marco

 

Am Montag 14 April 2008 18:50:42 schrieb Carlos Dávila:
> I have a layer with some rings in it. I want to remove those rings to
> have just the outer polygon. I can delete ring vertex one by one, but
> when there's only three left I can't continue. If I try to delete
> remaining vertex nothing happens or qgis crashes. I attach the layer.
> Regards
> Carlos



-- 
Dr. Marco Hugentobler
Institute of Cartography
ETH Zurich
Technical Advisor QGIS Project Steering Committee