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Re: OGC seeks public comment on GeoSPARQL

From: Frans Knibbe <frans.knibbe@geodan.nl>
Date: Mon, 11 Jul 2011 10:21:07 +0200
Message-ID: <4E1AB273.8050708@geodan.nl>
To: public-lod <public-lod@w3.org>
CC: John Goodwin <John.Goodwin@ordnancesurvey.co.uk>
It was a good idea to post this announcement here!

At the moment it is not really possible to publish geographical data in 
the Linked Data cloud. Well, there is the Basic Geo vocabulary from the 
W3C, and it is widely used, but it does not allow coding geometries 
other than points, and it does not allow for arbitrary coordinate 
systems. There is a wealth of rich geographical data out there, but it 
is mostly still locked up in silos. A standard like this could change that.

I really hope that some Linked Data experts can find some time to assess 
this candidate standard, and help the geospatial community on its way to 
'splendid assimilation'.


On 2011-07-08 14:57, John Goodwin wrote:
> The Open Geospatial Consortium (OGC®) seeks public comment on the 
> candidate OGC "GeoSPARQL: A Geographic Query Language for RDF Data" 
> Standard. The candidate OGC GeoSPARQL standard defines spatial 
> extensions to the W3C's SPARQL protocol and RDF query language.
> SPARQL is a protocol and query language for the Semantic Web. SPARQL 
> is defined in terms of the W3C's RDF data model and will work for any 
> data source that can be mapped into RDF, which potentially includes 
> sources of geospatial data. The OGC GeoSPARQL standard supports 
> representing and querying geospatial data on the Semantic Web. 
> GeoSPARQL provides the foundational geospatial vocabulary for linked 
> data involving location and defines extensions to SPARQL for 
> processing geospatial data. This standard serves as a common target 
> for vendors to implement and provides rich functionality for building 
> geospatial applications.
> GeoSPARQL follows a modular design. A /core/ component defines 
> top-level RDFS/OWL classes for spatial objects. A /geometry/ component 
> defines RDFS data types for serializing geometry data, RDFS/OWL 
> classes for geometry object types, geometry-related RDF properties, 
> and non-topological spatial query functions for geometry objects. A 
> /geometry/ /topology/ component defines topological query functions. A 
> /topological/ /vocabulary/ component defines RDF properties for 
> asserting topological relations between spatial objects, and a /query/ 
> /rewrite/ component defines rules for transforming a simple triple 
> pattern that tests a topological relation between two features into an 
> equivalent query involving concrete geometries and topological query 
> functions.
> The candidate OGC GeoSPARQL Standard documents are available for 
> review and comment below.
> http://www.opengeospatial.org/standards/requests/80
> John
> *Dr John Goodwin*
> *Research Scientist, Research, Ordnance Survey*
> Adanac Drive, SOUTHAMPTON, UK, SO16 0ASPhone: +44 (0) 23 8005 5761
>  www.ordnancesurvey.co.uk| john.goodwin@ordnancesurvey.co.uk
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Received on Monday, 11 July 2011 08:21:41 UTC

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