[Buildingdata] Re: data type for lat/long Well Known Text

[Christopher Gutteridge]

Thanks, John, in that case we'll revise the pattern (and our data) to 
use asWKT, although we'll keep dcterms:spatial for a change over period.




On 31/01/2013 08:03, John Goodwin wrote:
> Me :)
>
> I'll try to remember to put it in the next release :)
>
> -----Original Message-----
> From: Christopher Gutteridge [mailto:cjg at ecs.soton.ac.uk]
> Sent: 30 January 2013 17:15
> To: buildingdata at ecs.soton.ac.uk
> Cc: Alexander Dutton; John Goodwin
> Subject: Re: [Buildingdata] Re: data type for lat/long Well Known Text
>
>
> cc John Goodwin @ O.S.... John, who do we have to buy a pint for to get "asWKT" into your vocab meaning the W.K.T.+lat/long description of a spatial thing?
>
> On 30/01/2013 12:13, Alexander Dutton wrote:
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>> The Virtuoso folk use(d)
>> <http://www.openlinksw.com/schemas/virtrdf#Geometry>:
>>
>> http://docs.openlinksw.com/virtuoso/rdfsparqlgeospat.html
>>
>> Our friends at Ordnance Survey use
>> <http://data.ordnancesurvey.co.uk/ontology/geometry/asGML> for GML, so
>> I've used an equivalent asWKT:
>>
>> https://data.ox.ac.uk/doc:oxpoints/23233759
>> https://data.ox.ac.uk/doc:oxpoints/23233759/extent
>>
>> The WKT ones are consumed by OpenLayers at
>> https://data.ox.ac.uk/explore/science-area/; I haven't managed to get
>> it to play with GML.
>>
>> On 30/01/13 12:04, Christopher Gutteridge wrote:
>>> In the Southampton buildings data;
>> http://data.southampton.ac.uk/dataset/places.html we use the WKT
>> markup <http://en.wikipedia.org/wiki/Well-known_text> in a
>> dcterms:spatial literal to describe polygons. It's got more semantics
>> than that, because it's WKT where the values are latitude and longitude.
>>> I've been thinking of defining a data type for this to make it less
>> hacky. eg.
>>> <http://id.southampton.ac.uk/building/1>
>>> <http://purl.org/dc/terms/spatial> "POLYGON((-1.3962631
>> 50.9375993,-1.3960836 50.9378388,-1.3958288 50.9377629,-1.3960083
>> 50.9375235,-1.3962631
>> 50.9375993))"_*^^<http://purl.org/openorg/WKTLatLongType>*_ .
>>> It will give it explicit semantics without making it more difficult
>>> to
>> consume.
>>> --
>>> Christopher Gutteridge -- http://users.ecs.soton.ac.uk/cjg
>>>
>>> University of Southampton Open Data Service:
>> http://data.southampton.ac.uk/
>>> You should read the ECS Web Team blog:
>> http://blogs.ecs.soton.ac.uk/webteam/
>>>
>>> _______________________________________________
>>> Buildingdata mailing list
>>> Buildingdata at ecs.soton.ac.uk
>>> http://mailman.ecs.soton.ac.uk/mailman/listinfo/buildingdata
>> - --
>> Alexander Dutton
>> Developer, Office of the CIO; data.ox.ac.uk, OxPoints IT Services,
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> --
> Christopher Gutteridge -- http://users.ecs.soton.ac.uk/cjg
>
> University of Southampton Open Data Service: http://data.southampton.ac.uk/ You should read the ECS Web Team blog: http://blogs.ecs.soton.ac.uk/webteam/
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-- 
Christopher Gutteridge -- http://users.ecs.soton.ac.uk/cjg

University of Southampton Open Data Service: http://data.southampton.ac.uk/
You should read the ECS Web Team blog: http://blogs.ecs.soton.ac.uk/webteam/