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AST_INVERT - Invert a Mapping   

Description:
This routine inverts a Mapping by reversing the boolean sense of its Invert attribute. If this attribute is zero (the default), the Mapping will transform coordinates in the way specified when it was created. If it is non-zero, the input and output coordinates will be inter-changed so that the direction of the Mapping is reversed. This will cause it to display the inverse of its original behaviour.

Invocation:
CALL AST_INVERT( THIS, STATUS )

Arguments:
THIS = INTEGER (Given)
Pointer to the Mapping.
STATUS = INTEGER (Given and Returned)
The global status.



next up previous
Next: AST_ISA<CLASS> - Test membership of a class by an Object
Up: AST Routine Descriptions
Previous: AST_INTRAREG - Register a transformation routine for use by an IntraMap

AST A Library for Handling World Coordinate Systems in Astronomy
Starlink User Note 210
R.F. Warren-Smith & D.S. Berry
30th April 2003
E-mail:ussc@star.rl.ac.uk

Copyright (C) 2003 Central Laboratory of the Research Councils