Dear Hugh, I have a deadline tomorrow, therefore I'll be thankful if you can help me with this a bit?
On Wed, Feb 24, 2016 at 12:03 AM, Maria Jackson <maria.jackson....@gmail.com> wrote: >> Is the above query known to be valid ie has been run elsewhere or is this >> just a general spatial join query you are trying to get working ? > I got inspired to write the query this way from the tutorial : > http://virtuoso.openlinksw.com/tutorials/sparql/SPARQL_Tutorials_Part_10/SPARQL_Tutorials_Part_10.html#(4) > > Essentially, my query wants to retrieve cities ?long and ?nlong which > are at a distance of 100 k.m. from each other. I am not able to > understand as to what should be the syntax for this query (which > Virtuoso also supports). Can you please help me with this a bit? > > On Tue, Feb 23, 2016 at 10:58 PM, Hugh Williams > <hwilli...@openlinksw.com> wrote: >> Hi Maria, >> >> Running against the latest Virtuoso open source release I get a slightly >> different error running the query against your data: >> >> SQL> DB.DBA.TTLP_MT (file_to_string_output('./spatialTest.nq'), >> '','<http://localhost:8890/DAV/dbpedia>',512); >> >> Done. -- 13 msec. >> SQL> sparql select ?place ?nplace (( bif:st_distance( ?long,?nlong) ) AS >> ?distance) WHERE {graph ?g1{?place >> <http://www.opengis.net/ont/geosparql#asWKT> ?long} graph ?g4{?nplace >> <http://www.opengis.net/ont/geosparql#asWKT> ?nlong}}; >> >> *** Error 22023: VD [Virtuoso Server]GEO..: Function st_distance() expects a >> geometry of type 1 as argument 0, not geometry of type 10242 >> at line 2 of Top-Level: >> sparql select ?place ?nplace (( bif:st_distance( ?long,?nlong) ) AS >> ?distance) WHERE {graph ?g1{?place >> <http://www.opengis.net/ont/geosparql#asWKT> ?long} graph ?g4{?nplace >> <http://www.opengis.net/ont/geosparql#asWKT> ?nlong}} >> SQL> status(''); >> REPORT >> VARCHAR >> _______________________________________________________________________________ >> >> OpenLink Virtuoso Server >> Version 07.20.3216-pthreads for Darwin as of Feb 16 2016 >> >> >> Is the above query known to be valid ie has been run elsewhere or is this >> just a general spatial join query you are trying to get working ? >> >> Best Regards >> Hugh Williams >> Professional Services >> OpenLink Software, Inc. // http://www.openlinksw.com/ >> Weblog -- http://www.openlinksw.com/blogs/ >> LinkedIn -- http://www.linkedin.com/company/openlink-software/ >> Twitter -- http://twitter.com/OpenLink >> Google+ -- http://plus.google.com/100570109519069333827/ >> Facebook -- http://www.facebook.com/OpenLinkSoftware >> Universal Data Access, Integration, and Management Technology Providers >> >> >> >> On 23 Feb 2016, at 12:47, Maria Jackson <maria.jackson....@gmail.com> wrote: >> >> I loaded the following file in Virtuoso (version 07.20.3213): >> "<http://geoknow.eu/uk_natural#natural_2371851> >> <http://www.opengis.net/ont/geosparql#asWKT> "POLYGON ((77.164230 >> 33.187725,77.164188 33.188013,77.164066 33.188336,77.164457 >> 33.188676,77.164685 33.188861,77.165012 33.189296,77.165467 >> 33.188591,77.165490 33.188213,77.165085 33.188057,77.164811 >> 33.187902,77.164230 >> 33.187725))"^^<http://www.w3.org/2003/01/geo/wgs84_pos#Geometry> >> <http://a/id_1>. >> <http://geoknow.eu/uk_natural#natural_2729539> >> <http://www.opengis.net/ont/geosparql#asWKT> "POLYGON ((78.748611 >> 32.748742,78.748728 32.748925,78.749925 32.749764,78.750246 >> 32.749882,78.750630 32.749916,78.750850 32.749906,78.751046 >> 32.749875,78.751275 32.749807,78.751502 32.749698,78.751676 >> 32.749548,78.751743 32.749407,78.751792 32.749271,78.75778 >> 32.749124,78.751735 32.749024,78.751651 32.748885,78.751526 >> 32.748773,78.751369 32.748673,78.750919 32.748439,78.750465 >> 32.748209,78.750064 32.748093,78.749692 32.748034,78.749341 >> 32.748049,78.749006 32.748166,78.748721 32.748348,78.748604 >> 32.748523,78.748611 >> 32.748742))"^^<http://www.w3.org/2003/01/geo/wgs84_pos#Geometry> >> <http://a/id_4>. >> <http://geoknow.eu/uk_natural#natural_2817555> >> <http://www.opengis.net/ont/geosparql#asWKT> "POLYGON ((2.79723 >> -122.934,2.79897 -122.9314,2.797231 >> -122.9342))"^^<http://www.w3.org/2003/01/geo/wgs84_pos#Geometry> >> <http://a/id_7>." >> >> using: >> DB.DBA.TTLP_MT (file_to_string_output >> ('/home/virtuoso/share/virtuoso/vad/spatialTest.nq'), '', >> '<http://localhost:8890/DAV/dbpedia>',512); >> >> After which I ran the following query: >> SQL> sparql select ?place ?nplace (( bif:st_distance( ?long,?nlong) ) >> AS ?distance) WHERE {graph ?g1{?place >> <http://www.opengis.net/ont/geosparql#asWKT> ?long} graph ?g4{?nplace >> <http://www.opengis.net/ont/geosparql#asWKT> ?nlong}}; >> >> Which gave me the following error: >> *** Error 22032: [Virtuoso Driver][Virtuoso Server]GEO..: Function >> st_distance() expects a geometry as argument 0 >> >> Can someone please guide me as to where am I going wrong and how I run >> spatial join queries in Virtuoso? >> >> ------------------------------------------------------------------------------ >> Site24x7 APM Insight: Get Deep Visibility into Application Performance >> APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month >> Monitor end-to-end web transactions and take corrective actions now >> Troubleshoot faster and improve end-user experience. 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