Describing where a Photo shows

(or where it was taken, but that's not the example I had)

I made a simple height property. Simple if you don't mind syntax things - it
uses a datatype to describe what you mean by height. But then lets you
describe how many storeys up or down you are from the ground - which is
something people are more likely to know thann their altitude above sea level
or something similar. (Except mountaineers...)

Saying that you are on the ground looks like

<hi:height   xmlns:hi='http://www.w3.org/2001/sw/Europe/200409/geox/hi#'
rdf:datatype='http://www.w3.org/2001/sw/Europe/200409/geox/hi#etage'>0</hi:height>

(you probably want to move the namespace to where namespaces go, and you
might want to use an entity hack instead of writing the datatype in full. Or
make a simple script :-)

And describing a photo taken on the first floor looks like this :

<rdf:RDF
  xmlns:rdf='http://www.w3.org/1999/02/22-rdf-syntax-ns#'
  xmlns:dc='http://purl.org/dc/elements/1.1/'
  xmlns:geo='http://www.w3.org/2003/01/geo/wgs84_pos#'
  xmlns:foaf='http://xmlns.com/foaf/0.1/'
  xmlns:hi='http://www.w3.org/2001/sw/Europe/200409/geox/hi#'
 >

  <rdf:Description
rdf:about='http://swordfish.rdfweb.org/photos/2002/01/21/001497.JPG'>
    <foaf:depicts>
      <geo:SpatialThing>
        <geo:lat>51.47026</geo:lat>
        <geo:long>-2.59466</geo:long>
        <hi:height
rdf:datatype='http://www.w3.org/2001/sw/Europe/200409/geox/hi#etage'>1</hi:height>
        <dc:description>The couch at Libby's, when it was still
blue.</dc:description>
      </geo:SpatialThing>
    </foaf:depicts>
  </rdf:Description>
</rdf:RDF>

(which is http://www.w3.org/2001/sw/Europe/200409/geox/fotex.rdf copied out)

There's a schema that describes it:
  http://www.w3.org/2001/sw/Europe/200409/geox/hi.rdf

cheers

Chaals

--
Charles McCathieNevile  http://www.w3.org/People/Charles  tel: +61 409 134 136
SWAD-E http://www.w3.org/2001/sw/Europe         fax(france): +33 4 92 38 78 22
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Received on Wednesday, 29 September 2004 09:32:00 UTC