Hi Frans,
Virtuoso is not fully GeoSPARQL compliant and thus uses its own @prefix
virtrdf: <http://www.openlinksw.com/schemas/virtrdf#> virtrdf:Geometry for the
RDF geometry type, see:
http://docs.openlinksw.com/virtuoso/rdfsparqlgeospat.html
So you can insert Mutlipolygons etc as:
SQL> ttlp ('@prefix virtrdf: <http://www.openlinksw.com/schemas/virtrdf#>
@prefix geo: <http://www.w3.org/2003/01/geo/wgs84_pos#> <point> geo:geometry
"point(1.2 22.4)"^^virtrdf:Geometry .','xxx', 'graph');
Done. -- 1 msec.
SQL> ttlp ('@prefix virtrdf: <http://www.openlinksw.com/schemas/virtrdf#>
@prefix geo: <http://www.w3.org/2003/01/geo/wgs84_pos#> <point> geo:geometry
"MULTIPOLYGON(((1 2, 6 1, 9 3, 3 6, 1 2)), ((4 9, 7 6, 9 8, 4
9)))"^^virtrdf:Geometry .','xxx', 'graph');
Done. -- 2 msec.
SQL>
SQL> sparql select * from <graph> where {?s ?p ?o};
s
p
o
VARCHAR
VARCHAR
VARCHAR
_______________________________________________________________________________
http://xxx/point
http://www.w3.org/2003/01/geo/wgs84_pos#geometry
POINT(1.2 22.4)
http://xxx/point
http://www.w3.org/2003/01/geo/wgs84_pos#geometry
MULTIPOLYGON(((1.000000 2.000000,6.000000 1.000000,9.000000
3.000000,3.000000 6.000000,1.000000 2.000000)),((4.000000 9.000000,7.000000
6.000000,9.000000 8.000000,4.000000 9.000000)))
2 Rows. -- 2 msec.
SQL>
As said the full GeoSPARQL compliance is a work in progress which should soon
be completed, although actually I found that the
<http://www.opengis.net/ont/geosparql#wktLiteral> type being used in your
example also works:
SQL> ttlp ('@prefix virtrdf: <http://www.openlinksw.com/schemas/virtrdf#>
@prefix geo: <http://www.w3.org/2003/01/geo/wgs84_pos#> <point> geo:geometry
"MULTIPOLYGON(((1 2, 6 1, 9 3, 3 6, 1 2)), ((4 8, 7 6, 9 8, 4
8)))"^^<http://www.opengis.net/ont/geosparql#wktLiteral> .','xxx', 'graph');
Done. -- 2 msec.
SQL> sparql select * from <graph> where {?s ?p ?o};
s
p
o
VARCHAR
VARCHAR
VARCHAR
_______________________________________________________________________________
http://xxx/point
http://www.w3.org/2003/01/geo/wgs84_pos#geometry
POINT(1.2 22.4)
http://xxx/point
http://www.w3.org/2003/01/geo/wgs84_pos#geometry
MULTIPOLYGON(((1.000000 2.000000,6.000000 1.000000,9.000000
3.000000,3.000000 6.000000,1.000000 2.000000)),((4.000000 9.000000,7.000000
6.000000,9.000000 8.000000,4.000000 9.000000)))
http://xxx/point
http://www.w3.org/2003/01/geo/wgs84_pos#geometry
MULTIPOLYGON(((1.000000 2.000000,6.000000 1.000000,9.000000
3.000000,3.000000 6.000000,1.000000 2.000000)),((4.000000 8.000000,7.000000
6.000000,9.000000 8.000000,4.000000 8.000000)))
3 Rows. -- 1 msec.
SQL>
So, I don't get the error you report ie "Error 42000: [Virtuoso
Driver][Virtuoso Server]RDFGE: rdf box with a geometry rdf type and a non
geometry content" , thus how exactly are you performing your inserts ? If you
can provide a example load that is failing that would be best ?
Note, I am using the following build from the git develop/7 branch:
SQL> status('');
REPORT
VARCHAR
_______________________________________________________________________________
OpenLink Virtuoso Server
Version 07.10.3208-pthreads for Linux as of Mar 11 2014
Started on: 2014-03-17 17:36 GMT+1
Best Regards
Hugh Williams
Professional Services
OpenLink Software, Inc. // http://www.openlinksw.com/
Weblog -- http://www.openlinksw.com/blogs/
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Universal Data Access, Integration, and Management Technology Providers
On 17 Mar 2014, at 14:30, Frans Knibbe | Geodan <frans.kni...@geodan.nl> wrote:
> Hello,
>
> I have just installed Virtuoso Open Source 7.10.3208 and now I am
> loading data from n-triples files. This goes well, until I get to the
> geographical data. Then I get the following error:
>
> *** Error 42000: [Virtuoso Driver][Virtuoso Server]RDFGE: rdf box with a
> geometry rdf type and a non geometry content
>
> The geometries in the file are multipolygons serialized as WKT by PostGIS.
>
> An example of a geometry object:
>
> "<http://www.opengis.net/def/crs/EPSG/0/28992> MULTIPOLYGON(((150874.3
> 459500,150853.2 459477, {many more
> coordinates})))"^^<http://www.opengis.net/ont/geosparql#wktLiteral>
>
> for convenient reading I have replaced a long list of other coordinates
> with {many more coordinates}.
>
> What could be the problem in this case? Is it possible to get more
> details on the error? From what I could find on the web, multipolygons
> are supported in Virtuoso 7.1, as well as GeoSPARQL. The error seems to
> indicate that the datatype (geosparql:wktLiteral) is recognized, but
> that the literal does not comply.
>
> Thanks in advance,
>
> Frans Knibbe
> Geodan
>
>
>
>
>
>
>
>
>
> ------------------------------------------------------------------------------
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