Dear Kingsley,

I imagine that Peter is referring to

Req 10
   All RDFS Literals of type geo:wktLiteral shall consist of an
optional URI identifying the coordinate reference system followed by
Simple Features Well Known Text (WKT) describing a geometric value.
Valid geo:wktLiterals are formed by concatenating a valid,
absolute URI as defined in [RFC 2396], one or more spaces (Unicode
U+0020 character) as a separator, and a WKT string as defined in
Simple Features [ISO 19125-1].

 From page vii of the GeoSPARQL standard. However, I can imagine that you 
have
few customers demanding GeoSPARQL support for Mars at this time ;)

So it is just a feature not yet implemented...

Regards,
Jerven

On 2016-11-10 14:06, Kingsley Idehen wrote:
> 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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>>> 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 9 Nov 2016, at 02:34, Peter F. Patel-Schneider 
>>>> <pfpschnei...@gmail.com
>>>> <mailto:pfpschnei...@gmail.com>> 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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> 
> 
> --
> Regards,
> 
> Kingsley Idehen       
> Founder & CEO
> OpenLink Software   (Home Page: http://www.openlinksw.com)
> 
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> 
> 
> 
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-- 
Jerven Tjalling Bolleman
SIB | Swiss Institute of Bioinformatics
CMU - 1, rue Michel Servet - 1211 Geneva 4
t: +41 22 379 58 85 - f: +41 22 379 58 58
Jerven.Bolleman@sib.swiss - http://www.sib.swiss


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