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MatrixMap - Map coordinates by multiplying by a matrix

Description:
A MatrixMap is form of Mapping which performs a general linear transformation. Each set of input coordinates, regarded as a column-vector, are pre-multiplied by a matrix (whose elements are specified when the MatrixMap is created) to give a new column-vector containing the output coordinates. If appropriate, the inverse transformation may also be performed.
Constructor Function:
AST_MATRIXMAP
Inheritance
The MatrixMap class inherits from the Mapping class.
Attributes
The MatrixMap class does not define any new attributes beyond those which are applicable to all Mappings.
Functions
The MatrixMap class does not define any new routines beyond those which are applicable to all Mappings.


next up previous 264
Next: NormMap - Normalise coordinates using a supplied Frame
Up: AST Class Descriptions
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AST A Library for Handling World Coordinate Systems in Astronomy
Starlink User Note 210
R.F. Warren-Smith & D.S. Berry
24th May 2011
E-mail:ussc@star.rl.ac.uk

Copyright (C) 2009 Science \& Technology Facilities Council