On 02/07/13 04:46, Ying Jiang wrote:
Hi,
My name is Ying Jiang. I'm the GSoC student for Apache Jena on the
project of "jena-sptial". In brief, the project will end up with an
ARQ extension to perform simple spatial searches within SPARQL
queries. The approach is similar to "jena-text". Many technical
details have been discussed during the project application period. I
just completed my exams in late June. Now I've set up a svn repository
on Google Code [1] and got ready to code. I'd very glad to have Andy,
Damian and Stephen as the mentors. You will see the code to be
committed there in the coming months. I'd be grateful to your help
when I ask questions in the dev mailing list.
[1] http://code.google.com/p/jena-spatial/
Best regards,
Ying Jiang
Hi Ying,
Do you want to put the full project description up on that site? The
GoSC seems to secure project descriptions.
The project plan talks about preparing demo data. What had you in
mind? It would be really great to combine data from different
sources. One source is geonames and I managed to get RDF out of the
website with:
http://www.geonames.org/2654675/about.rdf
(which is Bristol, UK).
Anyone get suggestions for other sources?
Andy
DBPedia has geodata for many real world entities using the W3C geo
vocabulary (e.g. http://dbpedia.org/resource/Bristol).
The LinkedGeoData Project (http://linkedgeodata.org) also has a lot of
spatial data by creating RDF from OpenStreetMaps. It is modeled with
GeoSPARQL but supporting simple coordinates shouldn't be too difficult,
since they are represented as Well Known Text Literals.
Example:
<http://linkedgeodata.org/geometry/node1000032677>
<http://www.opengis.net/ont/geosparql#asWKT> "POINT(7.338818000000001
51.4433324)"^^<http://www.opengis.net/ont/geosparql#wktLiteral> .
Cheers,
Sören
