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AST_MAPLENGTH
-
Get the vector length of an entry in a KeyMap
- Description:
- This function returns the vector length of a named entry in a KeyMap,
(that is, how many values are associated with the entry).
- Invocation:
- RESULT = AST_MAPLENGTH( THIS, KEY, STATUS )
- Arguments:
-
THIS = INTEGER (Given)
-
Pointer to the KeyMap.
-
KEY = CHARACTER
(
) (Given)
-
The character string identifying the KeyMap entry. Trailing
spaces are ignored.
The supplied string is converted to upper case before use if the
KeyCase attribute is currently set to zero.
-
STATUS = INTEGER (Given and Returned)
-
The global status.
- Returned Value:
-
AST_MAPLENGTH = INTEGER
-
The length of the entry. One for a scalar, greater than one for
a vector. A value of zero is returned if the KeyMap does not
contain the named entry.
- Notes:
- A function value of zero will be returned if an error has already
occurred, or if this function should fail for any reason.
Next: AST_MAPPUT0X - Add a scalar value to a KeyMap
Up: AST Routine Descriptions
Previous: AST_MAPLENC - Get the number of characters in a character entry in a KeyMap
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