You are right. I misread.
Thanks.
cyw
----- Original Message -----
From: "Kevin Neufeld" <[EMAIL PROTECTED]>
To: "PostGIS Users Discussion" <postgis-users@postgis.refractions.net>
Sent: Thursday, September 04, 2008 9:51 PM
Subject: Re: [postgis-users] ST_Contains vs. ST_Within
They are indeed inverses. Are both your geometries valid? Can you
provide a test case?
-- Kevin
[EMAIL PROTECTED] wrote:
Thanks. But the two behave differently.
I tried both with the same data (see below) , Within returned more
records.
select * into dupage from maj where Contains((select the_geom from
city where area_id=21002891), the_geom)
select * into dupage from maj where Within(the_geom, (select the_geom
from city where area_id=21002891) )
----- Original Message ----- From: "Paul Ramsey"
<[EMAIL PROTECTED]>
To: "PostGIS Users Discussion" <postgis-users@postgis.refractions.net>
Sent: Thursday, September 04, 2008 5:59 PM
Subject: Re: [postgis-users] ST_Contains vs. ST_Within
They in inverses.
ST_Contains(A,B) <=> ST_Within(B,A)
P.
On Thu, Sep 4, 2008 at 3:49 PM, <[EMAIL PROTECTED]> wrote:
What are the difeerences between these two functions?
Thanks.
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