[gdal-dev] Question on OGRwkbGeometryType

[Stefan Moebius]

Hi,

The documentation of OGRwkbGeometryType mentions the following:

> wkbPoint25D 		2.5D extension as per 99-402
> wkbLineString25D 	2.5D extension as per 99-402
> wkbPolygon25D 	2.5D extension as per 99-402
> wkbMultiPoint25D 	2.5D extension as per 99-402
> wkbMultiLineString25D 2.5D extension as per 99-402
> wkbMultiPolygon25D 	2.5D extension as per 99-402
> wkbGeometryCollection25D 	2.5D extension as per 99-402 

What does "99-402" refer to and where can I learn more about this 2.5D 
extension?

Regards,
Stefan
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