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- Description:
This attribute gives the index of the Frame which is to be
regarded as the "current" Frame within a FrameSet. The default
is the most recent Frame added to the FrameSet (this Frame
always has an index equal to the FrameSet's Nframe attribute).
- Type:
- Integer.
- Class Applicability:
-
FrameSet
-
All FrameSets have this attribute.
- Notes:
-
Inverting a FrameSet (inverting the boolean sense of its
Invert attribute, with the AST_INVERT routine for example) will
interchange the values of its Base and Current attributes.
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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
30th April 2003
E-mail:ussc@star.rl.ac.uk
Copyright (C) 2003 Central Laboratory of the Research Councils