UnitMapUnitMap - Unit (null) Mapping

Description:
A UnitMap is a unit (null) MappingMapping that has no effect on the coordinates supplied to it. They are simply copied. This can be useful if a Mapping is required (e.g. to pass to another function) but you do not want it to have any effect. The NinNin and NoutNout attributes of a UnitMap are always equal and are specified when it is created.
Constructor Function:
astUnitMapastUnitMap
Inheritance
The UnitMap class inherits from the Mapping class.
Attributes
The UnitMap class does not define any new attributes beyond those which are applicable to all Mappings.
Functions
The UnitMap class does not define any new functions beyond those which are applicable to all Mappings.