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%META:TOPICPARENT{name="VirtTipsAndTricksGuide"}% ---+How Do I Gecode Data? ---++What? Automatic geocoding of data in quad store. ---++Why? Enable exploitation of SPARQL-GEO for geospatial oriented queries. ---++How? To gecode data one should call the <b>[[http://docs.openlinksw.com/virtuoso/fn_rdf_geo_fill.html][rdf_geo_fill]]</b> API from Conductor or iSQL: <verbatim> SQL> rdf_geo_fill (); Done. -- 282 msec. </verbatim> ---+++SPARQL-GEO sample queries * [[http://lod.openlinksw.com/b3s/search.vsp?q=20&sc=http%3A%2F%2Fdbpedia.org%2Fresource%2FOxford&sc2=5&sc3=http%3A%2F%2Fdbpedia.org%2Fproperty%2Festablished&sc4=en&fa=Execute][All Educational Institutions within 10km of Oxford, UK]]: <verbatim> SELECT DISTINCT ?thing AS ?uri ?thingLabel AS ?name ?date AS ?established ?lat ?long WHERE { <http://dbpedia.org/resource/Oxford> geo:geometry ?sourcegeo . ?resource geo:geometry ?matchgeo . ?resource geo:lat ?lat . ?resource geo:long ?long . FILTER ( bif:st_intersects ( ?matchgeo, ?sourcegeo, 5 ) ) . ?thing ?somelink ?resource . ?thing <http://dbpedia.org/property/established> ?date . ?thing rdfs:label ?thingLabel . FILTER ( lang ( ?thingLabel ) = "en" ) } </verbatim> * [[http://lod.openlinksw.com/b3s/search.vsp?q=18&sc=http%3A%2F%2Fdbpedia.org%2Fresource%2FLondon&sc2=20&sc3=en&fa=Execute][Things within close proximity of London]]: <verbatim> SELECT DISTINCT ?resource ?label ?location WHERE { <http://dbpedia.org/resource/London> geo:geometry ?sourcegeo . ?resource geo:geometry ?location ; rdfs:label ?label . FILTER ( bif:st_intersects ( ?location, ?sourcegeo, 20 ) ) . FILTER ( lang ( ?label ) = "en" ) } </verbatim> ---++Related * [[VirtTipsAndTricksGuide][Virtuoso Tips and Tricks Collection]] * [[http://docs.openlinksw.com/virtuoso/fn_rdf_geo_fill.html][<nowiki>rdf_geo_fill</nowiki> API]] * [[http://docs.openlinksw.com/virtuoso/fn_rdf_geo_add.html][<nowiki>rdf_geo_add</nowiki> API]] * [[http://docs.openlinksw.com/virtuoso/rdfsparqlgeospat.html#rdfsparqlgeospatcrg][Creating Geometries From RDF Data]] * [[http://docs.openlinksw.com/virtuoso/rdfsparqlgeospat.html#rdfsparqlgeospatprog][Programmatic Manipulation of Geometries in RDF]] * [[http://docs.openlinksw.com/virtuoso/rdfsparqlgeospat.html#rdfsparqlgeospatusg][Using Geometries With Existing Databases]] * [[http://lod.openlinksw.com/b3s/][OpenLink Billion Triple Demo queries]]

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