The spatial coverage of datasets is not always specified by using location URIs or values from location code lists. Another common approach is to denote the relevant area by using geographic coordinates. This is the case of INSPIRE metadata, where spatial coverage is specified by a geographic bounding box - i.e., a rectangle delimiting the relevant area.
It may be possible to map such "geometry" to one or more named places (and then to the corresponding location URIs or code list values), but this may require increasing the approximation already implicit in a bounding box.
Moreover, the geometry-based approach can be effectively re-used to support cross-border and cross-sector spatial queries, as well as to provide a graphical representation of the spatial coverage of a dataset on a map. Notably, such features are currently supported not only by geoportals but also in general purpose open data portals. A typical example is CKAN, its geospatial extension , and the one developed by Ordnance Survey .
For these reasons, the WG may consider allowing spatial coverage to be specified as a geometry, at least if this approach is used in the original metadata.