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- Description:
This attribute contains a string which identifies the physical
domain of the coordinate system that a Frame describes.
The Domain attribute also controls how a Frame behaves when it is
used (by astFindFrame) as a template to match another (target)
Frame. It does this by specifying the Domain that the target
Frame should have in order to match the template. If the Domain
value in the template Frame is set, then only targets with the
same Domain value will be matched. If the template's Domain
value is not set, however, then the target's Domain will be
ignored.
- Type:
- String.
- Class Applicability:
-
Frame
-
The default Domain value supplied by the Frame class is an
empty string.
-
SkyFrame
-
The SkyFrame class re-defines the default Domain value to be
"SKY".
-
CmpFrame
-
The CmpFrame class re-defines the default Domain value to be
of the form "<dom1>-<dom2>", where <dom1> and <dom2> are the
Domains of the two component Frames. If both these Domains are
blank, then the string "CMP" is used as the default Domain name.
-
FrameSet
-
The Domain attribute of a FrameSet is the same as that of its
current Frame (as specified by the Current attribute).
-
SpecFrame
-
The SpecFrame class re-defines the default Domain value to be
"SPECTRUM".
- Notes:
-
All Domain values are converted to upper case and white space
is removed before use.
Next: DrawAxes(axis) - Draw axes for a Plot?
Up: AST Attribute Descriptions
Previous: Disco - PcdMap pincushion/barrel distortion coefficient
AST A Library for Handling World Coordinate Systems in Astronomy
Starlink User Note 211
R.F. Warren-Smith & D.S. Berry
30th April 2003
E-mail:ussc@star.rl.ac.uk
Copyright (C) 2003 Central Laboratory of the Research Councils