Scale
A class with identifier
http://rds.posccaesar.org/ontology/lis14/rdl/Scale
Source ontology | Industrial Data Ontology |
is primitive | true |
natural language definition | A 'unit of measure' for which the range of numbers is determinate. |
primitive rationale | A comprehensive definition of the notion of scale is beyond the scope of IDO. |
usage note | The permissible number range for a scale may be expressed in OWL. Semi-formal example: If 'Celsius' is the 'uom of datum' of x, then any 'datum value' of x is within the range of -273,1 to infinity. |
equivalentEntityISO15926 | lis2:Scale |
lis12:Scale | |
See also | om:Scale |
http://qudt.org/schema/qudt/Scale | |
Example | centimetre, joule per kelvin; nominal, ordinal, interval, and ratio scales. |
scope note | Arguably, IDO conflates the notions of "unit of measure" and "scale" in an unhealthy way. While a unit of measure is a definite magnitude, a scale arises from fixing a number range to express multiples of the unit of measure. One may argue that a unit of measure has an implicit scale, obtained by multiplying the unit by any number; this will then allow for undefined or meaningless expressions like "minus 10 Kelvin". The term "Scale" is preserved from ISO 15926-2, which doesn't make use of "unit of measure". |