From: Markus Schaber <schabi@logix-tt.com>
Date: Fri, 24 Mar 2006 15:45:25 +0100
Subject: [postgis-users] X() function working for POINTs and MULTIPOINTs
In-Reply-To: <1142871193.441ed4991a425@web-mail2.uibk.ac.at>
References: <1142871193.441ed4991a425@web-mail2.uibk.ac.at>
Message-ID: <44240605.4020902@logix-tt.com>

Hi, Bernhard,

Bernhard Reimar Hoefle wrote:

> The PostGIS x() function does not support MULTIPOINTs and the geometryN() does
> not support POINTs.
> 
> select x('MULTIPOINT(1 1 1,2 2 2)'::GEOMETRY);
> ERROR:  Argument to X() must be a point
> ERROR:  Argument to X() must be a point

You might want to write your own set returning plpgsql function. This
way, it is even possible that select your_x('MULTIPOINT(...)') returns
two rows, 1 and 2.

HTH,
Schabi



-- 
Markus Schaber | Logical Tracking&Tracing International AG
Dipl. Inf.     | Software Development GIS

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