From: Thomas G. Lockhart <lockhart@alumni.caltech.edu>
To: dgross@lri.fr
Cc: Postgres Interfaces Mailing List <pgsql-interfaces@postgresql.org>
Subject: Re: [INTERFACES] postgres for spatial data
Date: Sat, 11 Jul 1998 14:09:16 +0000
Message-ID: <35A7720C.B254F09@alumni.caltech.edu> (raw)
> I'm looking for a graphical interface that can display the
> geometric types like polygon,...
Don't know about pre-built utilities for graphical display of geometric
objects. Let us know what you discover.
> I'm also looking for SQL extension in order to make
> spatial queries (for example, a function that tells if a point
> belongs to the interior of a polygon)
There are already some operators available; for example, the "@"
operator is for "on or inside":
postgres=> select '(0,0)'::point
postgres-> @ '((0,1),(1,0),(0,-1),(-1,0))'::polygon;
?column?
--------
t
(1 row)
Look in the hardcopy or html doc set which is included in v6.3.x. You
need to do a "make install" from the doc directory to get them unpacked.
Good luck...
- Tom
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To: pgsql-interfaces@postgresql.org
Cc: lockhart@alumni.caltech.edu, dgross@lri.fr
Subject: Re: [INTERFACES] postgres for spatial data
In-Reply-To: <35A7720C.B254F09@alumni.caltech.edu>
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