[georss] bbox for Dublin Core?

[Josh@oklieb]

Stefan,

Both dc:box and dc:point are interesting specializations of  
dc:coverage. It is unclear at first glance how they should be related  
to gml:envelope / georss:box but I have copied their creator, Simon  
Cox, for further information. The csw:Record schema for OGC Catalog  
also has an extended ows:boundingbox element specifically to support  
initial spatial queries, corresponding to ISO 19115. Any of these  
mentioned rectangular extent expressions "should" be convertible to  
any other, but some additional guidance and restrictions may be  
necessary in order to ensure this. For example, dcmiBox seems to  
require the reference system to be specified, whereas georss:box is  
WGS84 decimal degrees by default.

Example from OGC Catalog CS/W specification summary record response:

       <dc:coverage>
          <dct:spatial>
             <dcmiBox:Box projection="EPSG:4326" name="Geographic">
                <dcmiBox:northlimit units="decimal degrees">34.353</ 
dcmiBox:northlimit>
                <dcmiBox:eastlimit units="decimal degrees">-96.223</ 
dcmiBox:eastlimit>
                <dcmiBox:southlimit units="decimal degrees">28.229</ 
dcmiBox:southlimit>
                <dcmiBox:westlimit units="decimal degrees">-108.44</ 
dcmiBox:westlimit>
             </dcmiBox:Box>
          </dct:spatial>
          </dc:coverage>

--Josh

On Jul 26, 2006, at 2:36 PM, Stefan F. Keller wrote:

> I'd like to extend dublin core with a bounding box in search of a  
> lightweight and well established 'metadata search and harvesting  
> protocol' like OAI-PMH. This seems to be the latest version http:// 
> dublincore.org/documents/dcmi-box/ (2006-04-10) but it does not  
> seem to refer to any other standard.
>
> Is there a reason _not_ to take over this dcmi-box as a  
> specialization of coverage element from the Dublin core metadata?
> Does anybody know the relationship to georss (simple)?
>
> -- Stefan
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