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astPermAxes
-
Permute the axis order in a Frame
- Description:
- This function permutes the order in which a Frame's axes occur.
- Synopsis:
- void astPermAxes( AstFrame
this, const int perm[] )
- Parameters:
-
this
-
Pointer to the Frame.
-
perm
-
An array with one element for each axis of the Frame (Naxes
attribute). This should list the axes in their new order,
using the original axis numbering (which starts at 1 for the
first axis).
- Notes:
- Only genuine permutations of the axis order are permitted, so
each axis must be referenced exactly once in the "perm" array.
- If successive axis permutations are applied to a Frame, then
the effects are cumulative.
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AST A Library for Handling World Coordinate Systems in Astronomy
Starlink User Note 211
R.F. Warren-Smith & D.S. Berry
24th May 2011
E-mail:ussc@star.rl.ac.uk
Copyright (C) 2009 Science \& Technology Facilities Council