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

[Anders Moe]

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)

http://www.npd.no/engelsk/cwi/pbl/en/factmap/download/shapes_welcome.htm

<http://www.npd.no/engelsk/cwi/pbl/en/factmap/download/shapes_welcome.htm>OpenJUMP
reported no errors, but GDAL reports warnings. What has me worried is what
impact this might have on the various OGRGeometry geometry comparison
routines.

Anders


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
Geocap
w: +47 22 95 56 63
anders.moe at geocap.no
________________________________________________________
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