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Base
-
FrameSet base Frame index
- Description:
- This attribute gives the index of the Frame which is to be
regarded as the "base" Frame within a FrameSet. The default is
the first Frame added to the FrameSet when it is created (this
Frame always has an index of 1).
- Type:
- Integer.
- Class Applicability:
-
FrameSet
-
All FrameSets have this attribute.
- Notes:
- Inverting a FrameSet (inverting the boolean sense of its
Invert attribute, with the astInvert function 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 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