[gdal-dev] what does "Ring Self-intersection at or near point" really mean ?

Anders Moe anders.moe at geocap.no
Thu Nov 18 03:45:30 EST 2010

Hi again.

I was pointed to the OpenJUMP -> Tools -> QA -> Validate Selected layer in
order to perform a QA test on the file in question , namely "fields" from
(Oil Fields in the North Sea)


reported no errors, but GDAL reports warnings. What has me worried is what
impact this might have on the various OGRGeometry geometry comparison


On Wed, Nov 17, 2010 at 10:07 PM, Thomas Gratier <
osgeo.mailinglist at gmail.com> wrote:

> Hello,
> I suppose it's similar to Postgis I know better. See this old post
> http://www.davidgis.fr/blog/index.php?2007/05/11 to understand.
> It seems to be related to OpenGIS Simple Features for SQL<http://www.opengeospatial.org/standards/sfs>
> Regards
> ThomasG
> GIS specialist



Anders Moe

Managing Director
w: +47 22 95 56 63
anders.moe at geocap.no
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