[postgis-devel] Is ST_IsValid OGC or not OGC?

Mateusz Loskot mateusz at loskot.net
Mon Oct 5 13:37:09 PDT 2009


Paul Ramsey wrote:
> ST_IsValid is *not* an OGC defined function, but verifies that the 
> input geometry conforms to the structures and relationships for 
> geometry described in the OGC simple features specification.

Thanks Paul!

However, I'd (annoyingly) insist that the way how the reference to OGC
spec is worded in the documentation of ST_IsValid is not precise
and may be confusing. Especially when one compares to the similar note
about ST_IsSimple.

Best regards,
--
Mateusz Loskot, http://mateusz.loskot.net
Charter Member of OSGeo, http://osgeo.org



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