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Description:
This attribute
indicates whether a
Mapping has been simplified by the
astSimplify method. If
the IsSimple value is non-zero, then the Mapping has been simplified and so
there is nothing to be gained by simplifying it again. Indeed, the astSimplify
method will immediately return the Mapping unchanged if the IsSimple attribute
indicates that the Mapping has already been simplified.
Type:
Integer (boolean),
read-only. Applicability
Mapping
All Mappings have this attribute.
All classes of Frame return zero for the IsSimple attribute. This is
because changes can be made to a Frame which affect the Mapping represented
by the Frame, and so there can be no guarantee that the Mapping may not need
re-simplifying. Most non-Frame Mappings, on the other hand, are immutable and so when
they are simplified it is certain that they weill remain in a simple state.
Copyright (C) 2021 East Asian Observatory
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- AST
A Library for Handling
World
Coordinate Systems
in Astronomy - Next→
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