[postgis] distance(geometry,geometry) function

[Timothy H. Keitt]

Frank Warmerdam wrote:

>
>Tim,
>
>Dave may want to add to this, but the approach of having a base geometry
>type is essentially inherited from the OpenGIS simple features geometry
>model.  In particular, for OGC simple features it is necessary to be
>able to mix geometry types within a given column in a given table.  
>
>If we implement the full Simple Features for SQL metadata (via auxilary
>tables) there will be a mechanism to indicate that particular tables
>are restricted to a particular subtype in the total set of possible
>geometry types. 
>
Sounds good.   I suspected that postgis was following some standard way 
of doing things. (I just didn't know what it was.)

T.

-- 
Timothy H. Keitt
Department of Ecology and Evolution
State University of New York at Stony Brook
Stony Brook, New York 11794 USA
Phone: 631-632-1101, FAX: 631-632-7626
http://life.bio.sunysb.edu/ee/keitt/




------------------------ Yahoo! Groups Sponsor ---------------------~-->
Secure your servers with 128-bit SSL encryption! Grab your copy of
VeriSign's FREE Guide "Securing Your Web Site for Business." Get it now!
http://www.verisign.com/cgi-bin/go.cgi?a=n094442340008000
http://us.click.yahoo.com/6lIgYB/IWxCAA/yigFAA/PhFolB/TM
---------------------------------------------------------------------~->

To unsubscribe from this group, send an email to:
postgis-unsubscribe at yahoogroups.com

 

Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/