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

[Alexander Dutton]

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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, University of Oxford
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