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Re: Spatial datatypes and RDF/OWL

From: Steve Harris <swh@ecs.soton.ac.uk>
Date: Mon, 14 Apr 2008 12:17:58 +0100
Cc: <semantic-web@w3.org>
Message-Id: <9E0133C1-492D-4C15-9964-A8DF2233857D@ecs.soton.ac.uk>
To: "John Goodwin" <John.Goodwin@ordnancesurvey.co.uk>

On 14 Apr 2008, at 11:43, John Goodwin wrote:
> Hi Steve,
> Thanks for your reply. It would be nice to generalise this to other
> spatial datatypes like lines and polygons - but certainly would be
> non-trivial I'm sure.
> Has much work been done on spatial indexing of RDF?

According to google, quite a bit, but I'm not really familiar enough  
with it to comment.

Generalising it should be easy enough, the only trick is that the RDF  
engine needs to spot the polygon/whatever pattern at import time and  
index it using a normal GIS engine. Triggers would help there, but  
SPARQL is not quite that sophisticated yet.

- Steve
Received on Monday, 14 April 2008 11:18:45 UTC

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