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Re: Ontology for points in a three-dimensional space

From: Norman Gray <norman@astro.gla.ac.uk>
Date: Mon, 8 Dec 2008 23:21:09 +0000
To: Toby A Inkster <tai@g5n.co.uk>
Message-Id: <2EC4006C-88B2-40D8-A2ED-337E849627C8@astro.gla.ac.uk>
Cc: Semantic Web <semantic-web@w3.org>

Toby, hello.

On 2008 Dec 8, at 23:00, Toby A Inkster wrote:

> :Point a rdfs:Class ;
>   rdfs:comment "A point in three dimentions"@en .

I've done some preliminary work on this sort of thing in the context  
of astronomical images, and the FITS model.  It's the sort of thing  
that gets fiddly rather quickly.  What's your application?

> Effectively something like <http://www.w3.org/2003/01/geo/> but  
> operating on arbitrary 3D reference planes instead of just WGS84.

WGS84 would, I imagine, cover altitude as well....  and indeed it  
appears (having just looked), that http://www.w3.org/2003/01/geo/ does  
include a geo:alt predicate.

How general do you want your coordinate system to be (there's a whole  
world of positively delicious complication waiting to be explored  

Best wishes,


Norman Gray  :  http://nxg.me.uk
Dept Physics and Astronomy, University of Leicester
Received on Monday, 8 December 2008 23:21:46 UTC

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