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	id AA06763; Sun, 17 May 92 15:16:56 -0700
Message-Id: <9205172216.AA06763@postgres.Berkeley.EDU>
From: postarch (Postgres Mailing Archive)
Subject: Re: problem with point-in-polygon
To: postgres@postgres.berkeley.edu
Sender: pg_adm@postgres.berkeley.edu
Reply-To: joey@postgres.berkeley.edu
In-Reply-To: Your message of "Fri, 07 Feb 92 14:49:35 +0700."
             <9202071344.AA07200@postgres.Berkeley.EDU> 
Date: Sun, 17 May 92 15:16:41 PDT

Thank you for your bug report.  This bug has been fixed, and the on_ppath()
function should work correctly in the next release of postgres.

Joe Hellerstein

--------
you write:
> Dear Postgres-group,
> 
> Some strange results are obtained with the point-in-polygon function
> (function name is on_ppath and operator is ---`).  For example:
> 
> 
> Go
> * retrieve (test=("(0,0)"::point ---` "(1,3,0,1,1,1,1,0)"::path))\g
> 
> Query sent to backend is "retrieve (test=("(0,0)"::point ---` "(1,3,0,1,1,1,1
 +,0)
> "::path))"
> ---------------
> | test        |
> ---------------
> | t           |
> ---------------
> 
> This is not correct as (0,0) lies outside the triangle (0,1) (1,1) (1,0).
> The triangle lies in the upper-right corner of the unit-square.
> 
> Kind regards, Peter van Oosterom.