Dear All,
The current scope note of E94 Space Primitive reads:
E94 Space Primitive
Subclass of:_E59 <#_E59_Primitive_Value>_ Primitive Value
Scope Note:This class comprises instances of E59 Primitive Value for
space that should be implemented with appropriate validation, precision
and references to spatial coordinate systems to express geometries on or
relative to earth, or any other stable constellations of matter,
relevant to cultural and scientific documentation.
An E94 Space Primitive defines an E53 Place in the sense of a
declarative place as elaborated in CRMgeo (Doerr and Hiebel 2013), which
means that the identity of the place is derived from its geometric
definition. This declarative place allows for the application of all
place properties to relate phenomenal places to their approximations
expressed with geometries.
Definitions of instances of E53 Place using different spatial reference
systems always result in definitions of different instances of E53 place
approximating each other.
Instances of E94 Space Primitive provide the ability to link CRM encoded
data to the kinds of geometries used in maps or Geoinformation systems.
They may be used for visualisation of the instances of E53 Place they
define, in their geographic context and for computing topological
relations between places based on these geometries.
Note that it is possible for a place to be defined by phenomena causal
to it or other forms of identification rather than by an instance of E94
Space Primitive. In this case, this property must not be used for
approximating the respective instance of E53 Place with an instance of
E94 Space Primitive.E94 Space Primitive is not further elaborated upon
within this model. Compatibility with OGC standards are recommended.
The last paragraph above talks about the property. This is wrong. I propose:
*new last paragraph*:
Note that it is possible for a place to be defined by phenomena causal
to it, such as a settlement or a riverbed, or other forms of
identification rather than by an instance of E94 Space Primitive. Any
geometric approximation of such a place by an instance ofE94 Space
Primitiveconstitutes an instance of E53 Place in its own right, i.e.,
the approximating one. E94 Space Primitive is not further elaborated
upon within this model. Compatibility with OGC standards are recommended.
Please comment.
Martin
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Dr. Martin Doerr | Vox:+30(2810)391625 |
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