[postgis-devel] Recognizing "kind" of geometry

Mateusz Loskot mateusz at loskot.net
Fri Mar 5 15:06:20 PST 2010


Paul Ramsey wrote:
> On Fri, Mar 5, 2010 at 2:39 PM, Mateusz Loskot <mateusz at loskot.net> wrote:
> 
>> I'm having troubles finding what's the actual rationale
>> of this proposal. Let's put the issues of accurately
>> determining EMPTY'ness of geometry on a side.
>> Where is problem in determining if a GEOMERYCOLLECTION
>> is mixed or homogeneous?
> 
> Agreed. And more to the point, client software probably isn't going to
> be able to ingest GEOMETRYCOLLECTION(POLYGON(...)), so correctly
> flagging it as "areal" won't really help anyone.

That's right. If a client does not define correct state machine
for the available language, extending the language will not help much.

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



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