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IsLonAxis(axis)
-
Is the specified celestial axis a longitude axis?
- Description:
- This is a read-only boolean attribute that indicates the nature of
the specified axis. The attribute has a non-zero value if the
specified axis is a celestial longitude axis (Right Ascension, Galactic
longitude, etc), and is zero otherwise.
- Type:
- Integer (boolean), read-only.
- Class Applicability:
-
SkyFrame
-
All SkyFrames have this attribute.
- Notes:
- When specifying this attribute by name, it should be
subscripted with the number of the SkyFrame axis to be tested.
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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