[Qgis-developer] GEOS error Exception: IllegalArgumentException: Invalid number of points in LinearRing found 3 - must be 0 or >= 4

[Janneke van Dijk]

Hi Alvaro,

How do I disable the on-the-fly simplification?
Do I understand it correctly that the error causes problems with a 
virtual field with a geometry calculation in it? Would that also be 
solved by disabling on-the-fly simplification? Or should I avoid the 
issues by not making it a virtual field - if I know that the polygons 
won't be edited?

Thanks for your insights,
Janneke

On 13/05/2016 11:08, A Huarte wrote:
> Hi, I think this pull https://github.com/qgis/QGIS/pull/2900 fixes the 
> error.
>
> But it is pending to merge, It needs to fix some tests to be accepted 
> finally.
> Meanwhile you can disable the on-the-fly simplification of the layer.
>
> Kind regards
> Alvaro
>
> ------------------------------------------------------------------------
> *De:* Janneke van Dijk <janneke.qgis at gmail.com>
> *Para:* qgis-developer at lists.osgeo.org
> *Enviado:* Viernes 13 de Mayo de 2016 9:53
> *Asunto:* [Qgis-developer] GEOS error Exception: 
> IllegalArgumentException: Invalid number of points in LinearRing found 
> 3 - must be 0 or >= 4
>
> Dear list,
>
> Using QGIS 2.14.2 on Windows 7 I get the following error message when
> zooming out on a shapefile layer that has labels switched on:
>
> GEOS
> Exception: IllegalArgumentException: Invalid number of points in
> LinearRing found 3 - must be 0 or >= 4
>
> It seems to be an old bug (https://hub.qgis.org/issues/9375) that was
> fixed 2 years ago.
>
> It doesn't seem to cause any problems otherwise. Anyone else have this
> issue? Should I file a new bug report?
>
> Regards,
> Janneke
>
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