Hi Alex, you can "easily" extend GeoSPARQL to support your desired geospatial index.
We use a spatial filter during query processing for candidate selection as outlined by Voissard in Spatial Databases an Introduction [1]. It would be great if you could build on what we already have in the geospatialweb project http://code.google.com/p/geospatialweb/ Best, Marco [1] http://page.mi.fu-berlin.de/voisard/ On Tue, Sep 13, 2011 at 7:42 AM, Alexander Dutton <[email protected]> wrote: > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Hi all, > > We've currently got a lot of (simple) geospatial data in > <http://data.clarosnet.org/> (served behind the scenes by Fuseki). > > We'd like to do some geospatial indexing magic, and were wondering > about writing something a bit like LARQ that will pull out things like > geo:Points and WKT literals, place them in a PostGIS-flavoured DB, and > then implements something like GeoSPARQL (<http://geosparql.org/>). > > Has anyone started doing this or something similar? I'm happy to give > it a go and I'm sure my employer would be happy to contribute it back > to Jena and the ASF. My plan was to go through the LARQ codebase to > work out how it hooks itself in, and use that as a model. > > Yours, > > Alex > > - -- > Alexander Dutton > Metamorphoses Project Developer, Claros > Oxford University Computing Services, ℡ 01865 (6)13483 > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.11 (GNU/Linux) > Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org/ > > iEYEARECAAYFAk5vQbgACgkQS0pRIabRbjC9QACfTZtTcFIhDXjWPR+MpEWunKkt > 38oAnR5n+oi1nuTZAfRdOrF2mcOac2Ck > =r1dj > -----END PGP SIGNATURE----- > > -- Marco Neumann KONA --- Join us at the Semantic Web Media Summit in New York City for an exciting event on 14 September 2011 http://www.lotico.com/evt/swmsNYC2011/
