Hi Oliver, Have you tried running the RDF_GEO_FILL() function to recreate the RDF geometries as detailed at:
http://docs.openlinksw.com/virtuoso/rdfsparqlgeospat.html#rdfsparqlgeospatcrg
http://docs.openlinksw.com/virtuoso/fn_rdf_geo_fill.html
Best Regards
Hugh Williams
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On 16 Oct 2014, at 16:59, Olivier Dalang <olivier.dal...@gmail.com> wrote:
> Hi !
>
> When I add triples with a <http://www.opengis.net/ont/geosparql#geometry>
> statement, they seem to be automatically spatially indexed. At least, I can
> use this filter clause in my SPARQL queries (replacing {{...}} values by a
> number) :
>
> FILTER(
> bif:st_intersects ( ?geom, bif:st_geomfromtext("BOX({{xmin}} {{ymin}},
> {{xmax}} {{ymax}})") )
> )
>
> This works pretty well !
>
> However, if I change the <http://www.opengis.net/ont/geosparql#geometry>
> property afterwards (by deleting the triple and adding another one), the
> spatial index doesn't seem to update. The filter doesn't work anymore and
> filters out the features (it seems).
>
> I'm a bit lost, since I've no idea where the magic lies in the creation of
> the spatial index. Is there a function to refresh the index for all
> <http://www.opengis.net/ont/geosparql#geometry> properties ?
>
> Thanks in advance !
>
>
> Olivier Dalang
> ---
> Digital Humanities Lab (DHLAB) - http://dhlab.epfl.ch
> EPFL CDH DHLAB / CM 2 271
> Station 10 / CH-1015 Lausanne
> Tel. +41 21 693 02 46
>
>
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