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PolarLong - The longitude value to assign to either pole

Description:
This attribute holds the longitude value, in radians, to be returned when a Cartesian position corresponding to either the north or south pole is transformed into spherical coordinates. The default value is zero.
Type:
Double precision.
Class Applicability:
SphMap
All SphMaps have this attribute.


next up previous 264
Next: PolyTan - Use PVi_m keywords to define distorted TAN projection?
Up: AST Attribute Descriptions
Previous: Permute - Permute axis order?

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