W3C home > Mailing lists > Public > public-lod@w3.org > July 2011

Re: OGC seeks public comment on GeoSPARQL

From: Boris Villazon-Terrazas <boris.villazon@deri.org>
Date: Wed, 13 Jul 2011 10:32:31 +0100
Message-ID: <4E1D662F.3060101@deri.org>
To: Frans Knibbe <frans.knibbe@geodan.nl>
CC: public-lod <public-lod@w3.org>, John Goodwin <John.Goodwin@ordnancesurvey.co.uk>
Hi Fran

On 11/07/2011 9:21, Frans Knibbe wrote:
> It was a good idea to post this announcement here!
Yes, it was .. ;)
>
> 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.
We have GeoLinkedData [1], which aims to enrich the Web of Data with 
Spanish geospatial data.
We are publishing points and linestrings, and we have two tools for 
supporting these geometries, geometry2rdf [2], and map4rdf[3].

Yes, we have more geospatial information out there, and we hope this 
standard will be a step forward to enrich the Web of Data with more 
geospatial linked data.

<http://oegdev.dia.fi.upm.es/projects/map4rdf/>
>
> 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'.
We have already provided some comments.

Thanks

Boris

[1] http://geo.linkeddata.es <http://geo.linkeddata.es/>
[2] http://mccarthy.dia.fi.upm.es/geometry2rdf/
[3] http://oegdev.dia.fi.upm.es/projects/map4rdf/
>
> Regards,
> Frans
>
> 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
>> *Please consider your environmental responsibility before printing 
>> this email*
>>
>> This email is only intended for the person to whom it is addressed and may contain confidential information. If you have received this email in error, please notify the sender and delete this email which must not be copied, distributed or disclosed to any other person.
>>
>> Unless stated otherwise, the contents of this email are personal to the writer and do not represent the official view of Ordnance Survey. Nor can any contract be formed on Ordnance Survey's behalf via email. We reserve the right to monitor emails and attachments without prior notice.
>>
>> Thank you for your cooperation.
>>
>> Ordnance Survey
>> Adanac Drive
>> Southampton SO16 0AS
>> Tel: 08456 050505
>> http://www.ordnancesurvey.co.uk
>>
>>
>
Received on Wednesday, 13 July 2011 09:34:25 UTC

This archive was generated by hypermail 2.3.1 : Sunday, 31 March 2013 14:24:34 UTC