Expressing position in RDF

[Rob Seaman]

As with most subtlety, it is implicit.

On Oct 10, 2008, at 4:01 PM, Matthew Graham wrote:

> Hi,
>
> No, there was no intended subtlely to the question (which is why I  
> flagged it as a practical question). I just want to know what  
> ontology I can use this afternoon to represent equatorial  
> coordinates in RDF.
>
> 	Cheers,
>
> 	Matthew
>
>
> On Oct 10, 2008, at 3:55 PM, Rob Seaman wrote:
>
>> Rather, don't you really want to represent something like "object  
>> has a WCS" and "the object's WCS corresponds to an RA of 134.556"?   
>> Not to be pedantic (no more so than usual, anyway), but science and  
>> technology are chock full of data structures that don't resolve to  
>> simple scalars.  I presume the ontological issue here is something  
>> about how to represent cardinality, rather than the more usual  
>> finite enumerated list of domain responses?
>>
>> In any event, Matthew's question seems close to the essence of what  
>> needs to be answered to ever hope to win the hearts of scientists.   
>> For instance, SysML is a similar step in this direction compared to  
>> UML, permitting assertions of physical constraints in state  
>> machines, etc.
>>
>> Rob
>> --
>>
>> On Oct 10, 2008, at 3:39 PM, Matthew Graham wrote:
>>
>>> Hi,
>>>
>>> A practical semantic astronomy question:
>>>
>>> I want to represent the relationship "object has a RA of 134.556"  
>>> as an RDF triple. Is there any existing ontology that would allow  
>>> me to do this? The best I've seen so far is to use the UCD as the  
>>> predicate.
>>>
>>> 	Cheers,
>>>
>>> 	Matthew
>>
>