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Posted to users@jena.apache.org by Kris McGlinn <Kr...@scss.tcd.ie> on 2018/09/04 13:27:07 UTC

Spatial Searches with SPARQL

Hi All,

I configured fuseki to support added spatial searches. I was wondering 
if there is anyway to query polygons? The documentation gives a 
"spatial:withinBox", but I was looking for something closer to 
geof:sfWithin?

Kind regards,

Kris.



-- 
Kris McGlinn, Ph.D.
Research Fellow,
ADAPT Centre,
F 33, School of Computer Science and Statistics,
Trinity College Dublin
+353 (0)1 896 4992

RE: Spatial Searches with SPARQL

Posted by Greg Albiston <gr...@hotmail.com>.
Hi Kris,

As Lorenz says I have an implementation of GeoSPARQL for Jena 3.x but need to make some changes and additional tests.
I'm planning to make it available as a separate project soon.

Querying of polygons using geof:sfWithin is supported.

Thanks,

Greg


-----Original Message-----
From: Lorenz B. <bu...@informatik.uni-leipzig.de> 
Sent: 05 September 2018 10:37
To: users@jena.apache.org
Subject: Re: Spatial Searches with SPARQL

Hello Kris,

you're the one from the StackOverflow discussion [1] right? Good that you asked here for support. As I said, so far there is no GeoSPARQL support, but quite recently this was discussed with a possible future implementation from Greg Albiston here [2].


Cheers,
Lorenz

[1]
https://stackoverflow.com/questions/52094346/jena-dataaccessorfactory-with-the-parliament-triplestore
[2]
https://lists.apache.org/thread.html/2f09f9c3cfc749c84d09b6c5d2cb40f962986f9fd2890f0a32e109f4@%3Cusers.jena.apache.org%3E

> Hi All,
>
> I configured fuseki to support added spatial searches. I was wondering 
> if there is anyway to query polygons? The documentation gives a 
> "spatial:withinBox", but I was looking for something closer to 
> geof:sfWithin?
>
> Kind regards,
>
> Kris.
>
>
>
--
Lorenz Bühmann
AKSW group, University of Leipzig
Group: http://aksw.org - semantic web research center

Re: Spatial Searches with SPARQL

Posted by "Lorenz B." <bu...@informatik.uni-leipzig.de>.
Hello Kris,

you're the one from the StackOverflow discussion [1] right? Good that
you asked here for support. As I said, so far there is no GeoSPARQL
support, but quite recently this was discussed with a possible future
implementation from Greg Albiston here [2].


Cheers,
Lorenz

[1]
https://stackoverflow.com/questions/52094346/jena-dataaccessorfactory-with-the-parliament-triplestore
[2]
https://lists.apache.org/thread.html/2f09f9c3cfc749c84d09b6c5d2cb40f962986f9fd2890f0a32e109f4@%3Cusers.jena.apache.org%3E

> Hi All,
>
> I configured fuseki to support added spatial searches. I was wondering
> if there is anyway to query polygons? The documentation gives a
> "spatial:withinBox", but I was looking for something closer to
> geof:sfWithin?
>
> Kind regards,
>
> Kris.
>
>
>
-- 
Lorenz Bühmann
AKSW group, University of Leipzig
Group: http://aksw.org - semantic web research center