I've read the RDF Geography Virtuoso document and tried some examples in this.
> PREFIX geo: <http://www.w3.org/2003/01/geo/wgs84_pos#> > > SELECT ?class > > COUNT (*) > > WHERE { ?m geo:geometry ?geo . > > ?m a ?class . > > FILTER ( <bif:st_intersects> > > ( ?geo,<bif:st_point> (0, 52),100) > > ) > > } > > GROUP BY ?class > > ORDER BY DESC 2 > > and I got this error message : 42001 Error SR185: Undefined procedure SPARQL.SPARQL.st_point. What's problem with this?I think this function is already defined in virtuoso.
