This part of ISO 19144 establishes the structure of a geographic information classification system, together
with the mechanism for defining and registering the classifiers for such a system. It specifies the use of
discrete coverages to represent the result of applying the classification system to a particular area and defines
the technical structure of a register of classifiers in accordance with ISO 19135.
The structure can be used to develop specific classification systems that address particular application areas,
specified in other parts of ISO 19144.