Elijah,
I've used GEOS Buffer function available via the OGR API
(http://www.gdal.org/ogr/classOGRGeometry.html) to clean polygons:
OGRGeometry *poTempGeometry = poGeometry->Buffer(0.0); // Let Geos fix
the problem.
Best Regards,
Brent Fraser
On 4/27/2011 8:36 AM, Elijah Robison wrote:
Hey devs, is anyone aware of an OGR approach to validate/clean
geometries, for instance, as they are being converted from SHP to
PostGRESql?
It's not uncommon to have a handful of invalid geometries (usually
self-intersecting polygons) in a parcel dataset, and it's impractical
to correct them manually. In most situations I use the "Clean
Geometries" function in ArcGIS, which does fix the problem. However
this one functionality is my main reason to retain Arc in my primary
tool chain.
I've never found a scripting approach by trolling the search engines
so I thought I'd ask here.
Thanks, Elijah
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