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NullRegion
-
A boundless region within a Frame
- Description:
- The NullRegion class implements a Region with no bounds within a Frame.
If the Negated attribute of a NullRegion is false, the NullRegion
represents a Region containing no points. If the Negated attribute of
a NullRegion is true, the NullRegion represents an infinite Region
(that is, all points in the coordinate system are inside the NullRegion).
- Constructor Function:
- astNullRegion
-
Inheritance
- The NullRegion class inherits from the Region class.
-
Attributes
- The NullRegion class does not define any new attributes beyond
those which are applicable to all Regions.
-
Functions
- The NullRegion class does not define any new functions beyond those
which are applicable to all Regions.
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Up: AST Class Descriptions
Previous: NormMap - Normalise coordinates using a supplied Frame
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