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Grf - Use Grf functions registered through astGrfSet?

Description:
This attribute selects the functions which are used to draw graphics by the Plot class. If it is zero, then the functions in the graphics interface selected at link-time are used (see the ast_link script). Otherwise, functions registered using astGrfSet are used. In this case, if a function is needed which has not been registered, then the function in the graphics interface selected at link-time is used.

The default is to use the graphics interface

Type:
Integer (boolean).
Class Applicability:
Plot
All Plots have this attribute.
Plot3D
The Plot3D class ignores this attributes, assuming a value of zero.
Notes:
  • The value of this attribute is not saved when the Plot is written out through a Channel to an external data store. On re-loading such a Plot using astRead, the attribute will be cleared, resulting in the graphics interface selected at link-time being used.


next up previous 264
Next: Grid - Draw grid lines for a Plot?
Up: AST Attribute Descriptions
Previous: Gap(axis) - Interval between linearly spaced major axis values of a Plot

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