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WcsAxis(lonlat) - FITS-WCS projection axes

Description:
This attribute gives the indices of the longitude and latitude coordinates of the FITS-WCS projection within the coordinate space used by a WcsMap. These indices are defined when the WcsMap is first created using AST_WCSMAP and cannot subsequently be altered.

If "lonlat" is 1, the index of the longitude axis is returned. Otherwise, if it is 2, the index of the latitude axis is returned.

Type:
Integer, read-only.
Class Applicability:
WcsMap
All WcsMaps have this attribute.


next up previous 264
Next: WcsType - FITS-WCS projection type
Up: AST Attribute Descriptions
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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