[postgis-devel] GeoJSON failing on 1.4

Tue Jan 20 01:47:57 PST 2009

Martin Davis wrote:

> AFAIK the SFS spec is silent on how "closed" should be defined in the 
> Z-dimension.
> 
> FWIW JTS (and I assume GEOS) explicitly does not check the Z-ordinate 
> when checking whether a ring is closed or not.  But JTS doesn't really 
> try to provide full 2.5 D semantics - since you're trying to address 
> this in PostGIS, you might want to take a more rigorous approach.
> 
> M

Thanks Martin.

So folks, is this a GEOS bug?

ATB,

Mark.

-- 
Mark Cave-Ayland
Sirius Corporation - The Open Source Experts
http://www.siriusit.co.uk
T: +44 870 608 0063