On 11/9/16 10:25 PM, Peter F. Patel-Schneider wrote: > Through a process of bisection I found the datum that is not handled by > virtuoso. It is > > wd:Q24227 a wikibase:Item ; > wdt:P625 "<http://www.wikidata.org/entity/Q111> Point(351.83 > -14.47)"^^geo:wktLiteral . > > i.e., a point on Mars. > > Is virtuoso supposed to be able to handle other coordinate systems? If not, > how can it handle Wikidata and other information sources that have points not > on the surface of the earth? > > peter
A valid RDF triple (or datum) would take the form:
wd:Q24227 a wikibase:Item ;
wdt:P625 "Point(351.83-14.47)"^^geo:wktLiteral .
Thus, you have a problematic triple.
Kingsley
>
>
> On 11/08/2016 07:23 PM, Hugh Williams wrote:
>> Hi Peter,
>>
>> What is the Virtuoso version your are using ( run “virtuoso-t -?”) ?
>>
>> Against the latest 07.20.3217 build the following point geometry loads
>> successfully with the ttlp function:
>>
>> SQL> ttlp ('@prefix geo: <http://www.w3.org/2003/01/geo/wgs84_pos#> @prefix
>> virtrdf: <http://www.openlinksw.com/schemas/virtrdf#> <point> geo:geometry
>> "point(1.2 22.4"^^virtrdf:Geometry .', 'xxx', 'graph');
>>
>> Done. -- 10 msec.
>> SQL> sparql select * from <graph> where {?s ?p ?o};
>> s
>> p
>> o
>> LONG VARCHAR
>> LONG VARCHAR
>> LONG VARCHAR
>> _______________________________________________________________________________
>>
>> http://xxx/point
>> http://www.w3.org/2003/01/geo/wgs84_pos#geometry
>> POINT(1.2000000476837 22.39999961853)
>>
>> 1 Rows. -- 2 msec.
>> SQL>
>>
>> Best Regards
>> Hugh Williams
>> Professional Services
>> OpenLink Software, Inc. // http://www.openlinksw.com/
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>>
>>> On 9 Nov 2016, at 02:34, Peter F. Patel-Schneider <[email protected]
>>> <mailto:[email protected]>> wrote:
>>>
>>> Hi:
>>>
>>> I'm trying to get virtuoso to work with geometry data types.
>>>
>>> I noticed that the version of virtuoso that I am using requires that the
>>> data
>>> type names be in ALL CAPS (e.g., POINT). Has this been fixed in the
>>> current
>>> version of virtuoso?
>>>
>>> peter
>>>
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