Yes, it should be workable. But please allow me to make complement. The
more official way to encode a point via OGC GeoSPARQL spec should be add a
CRS description, as following example. The URI indicates WGS84.
<geo:Point>
<geo:asWKT rdf:datatype="http://www.opengis.net/ont/sf#wktLiteral";>
<http://www.opengis.net/def/crs/OGC/1.3/CRS84> (141.70853 39.0819011)
</geo:asWKT>
</geo:Point>
On Tue, Jul 2, 2013 at 5:26 PM, Dimitris Kontokostas <[email protected]>wrote:
> It is easy to add this spec too in the following dbpedia release
>
> From my understanding, for every coordinate we should just add the
> following triple to be geoSPARQL compatible?
> <http://www.opengis.net/ont/geosparql#Point> <
> http://www.opengis.net/ont/geosparql#asWKT> "Point({lat} {lon})"^^<
> http://www.opengis.net/ont/sf#wktLiteral>
>
> Dimitris
>
>
> On Tue, Jul 2, 2013 at 12:00 PM, deng dongpo <[email protected]>wrote:
>
>> Hi Smalis and Sebastian
>>
>> Maybe I can share some information and my experiences.
>>
>> The geo vocabularies (W3C) using in DBpedia are different from GeoSPARQL
>> (OGC). Thus, even through DBpedia triples are imported to geospatial triple
>> store such as BBN Parliament, the geo queries cannot be worked because
>> triple stores cannot make spatial indexes. Take a simple example
>> of coordinates.
>>
>> In DBpedia, it uses W3C, so it should be like:
>>
>> <geo:Point>
>> <geo:lat>39.0819011</geo:lat>
>> <geo:long>141.70853</geo:long>
>> </geo:Point>
>>
>> But OGC GeoSPARQL recommends the way:
>>
>> <geo:Point>
>> <geo:asWKT rdf:datatype="http://www.opengis.net/ont/sf#wktLiteral";>
>> Point(141.70853 39.0819011)
>> </geo:asWKT>
>> </geo:Point>
>>
>> Here, the two prefixes "Geo" are different as well.
>> W3C is geo="http://www.w3.org/2003/01/geo/wgs84_pos#";; and
>> OGC is geo="http://www.opengis.net/ont/geosparql#";
>>
>> By the way, there us the other OGC GeoSPARQL triple store, called STRABON
>> http://www.strabon.di.uoa.gr/
>>
>>
>> Cheers,
>> Dongpo
>>
>>
>>
>>
>> On Tue, Jul 2, 2013 at 4:13 PM, Sebastian Hellmann <
>> [email protected]> wrote:
>>
>>> Hi Smalis,
>>> I guess, your question didn't get an answer, because many people (such
>>> as myself) ar completely unfamiliar with the newly emerging GEOsparql.
>>>
>>> Your question might be more appropriate for the Virtuoso discussion
>>> list. If Virtuoso implements it DBpedia will have it, I suppose.
>>>
>>> Sebastian
>>>
>>> Am 24.06.2013 15:37, schrieb Smalis Sklavos:
>>>
>>> Hi,
>>> I would like to ask whether dbpedia is able or is planning to support
>>> GEOsparql.
>>> I believe, that it is a useful tool, and I would be glad to see it
>>> happening.
>>> Also, if I want to use dbpedia locally, using Geosparql on it, do you
>>> know if I should use a triple store such as parliament ?
>>> Thank you in advance
>>>
>>> Smalis Sklavos
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> This SF.net email is sponsored by Windows:
>>>
>>> Build for Windows Store.
>>> http://p.sf.net/sfu/windows-dev2dev
>>>
>>>
>>>
>>> _______________________________________________
>>> Dbpedia-discussion mailing
>>> [email protected]https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
>>>
>>>
>>>
>>> --
>>> Dipl. Inf. Sebastian Hellmann
>>> Department of Computer Science, University of Leipzig
>>> Events:
>>> * NLP & DBpedia 2013 (http://nlp-dbpedia2013.blogs.aksw.org, Deadline:
>>> *July 8th*)
>>> * LSWT 23/24 Sept, 2013 in Leipzig (http://aksw.org/lswt)
>>> Venha para a Alemanha como PhD: http://bis.informatik.uni-leipzig.de/csf
>>> Projects: http://nlp2rdf.org , http://linguistics.okfn.org ,
>>> http://dbpedia.org/Wiktionary , http://dbpedia.org
>>> Homepage: http://bis.informatik.uni-leipzig.de/SebastianHellmann
>>> Research Group: http://aksw.org
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> This SF.net email is sponsored by Windows:
>>>
>>> Build for Windows Store.
>>>
>>> http://p.sf.net/sfu/windows-dev2dev
>>> _______________________________________________
>>> Dbpedia-discussion mailing list
>>> [email protected]
>>> https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
>>>
>>>
>>
>>
>> ------------------------------------------------------------------------------
>> This SF.net email is sponsored by Windows:
>>
>> Build for Windows Store.
>>
>> http://p.sf.net/sfu/windows-dev2dev
>> _______________________________________________
>> Dbpedia-discussion mailing list
>> [email protected]
>> https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
>>
>>
>
>
> --
> Kontokostas Dimitris
>
------------------------------------------------------------------------------
This SF.net email is sponsored by Windows:
Build for Windows Store.
http://p.sf.net/sfu/windows-dev2dev
_______________________________________________
Dbpedia-discussion mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
