[postgis-devel] length{,2d,3d}

[Martin Daly]

Mark,

> This is definitely an interesting issue that you've raised. 
> I've just had a look over the OpenGIS specification and 
> looking at section 2.1.3.1 it would appear that the entire 
> spec is only written based on a 2D point :/. The other 

The attached OGC document (which was adopted some time ago) is an
addendum to the Simple Features specification which covers 2.5D.

Regards,
Martin
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