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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
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.
Copyright (C) 2021 East Asian Observatory
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A Library for Handling
World
Coordinate Systems
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