- ←Prev
- AST
A Library for Handling
World Coordinate Systems
in Astronomy - Next→
- TOC ↑
Description:
A RateMap is a
Mapping
which represents a single element of the Jacobian matrix of another Mapping. The Mapping for which
the Jacobian is required is specified when the new RateMap is created, and is referred to as the
"
encapsulated Mapping
"
below.
The number of inputs to a RateMap is the same as the number of inputs to its encapsulated Mapping.
The number of outputs from a RateMap is always one. This one output equals the rate of change of
a specified output of the encapsulated Mapping with respect to a specified input of the
encapsulated Mapping (the input and output to use are specified when the RateMap is
created).
A RateMap which has not been inverted does not define an inverse transformation. If a
RateMap has been inverted then it will define an inverse transformation but not a forward
transformation.
Constructor Function
Inheritance
The RateMap class
inherits from the Mapping class.
Attributes
The RateMap class does not define any new
attributes beyond those which are applicable to all Mappings.
Functions
The RateMap class
does not define any new routines beyond those which are applicable to all Mappings.
Copyright (C) 2014 Science & Technology Facilities Council
- ←Prev
- AST
A Library for Handling
World
Coordinate Systems
in Astronomy - Next→
- TOC ↑