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astGrfPop - Restore previously saved graphics functions used by a Plot

Description:
This function restores a snapshot of the graphics functions stored previously by calling astGrfPush. The restored graphics functions become the current graphics functions used by the Plot.

The astGrfPush and astGrfPop functions are intended for situations where it is necessary to make temporary changes to the graphics functions used by the Plot. The current functions should first be saved by calling astGrfPush. New functions should then be registered using astGrfSet. The required graphics should then be produced. Finally, astGrfPop should be called to restore the original graphics functions.

Synopsis:
void astGrfPop( AstPlot $*$this )
Parameters:
this
Pointer to the Plot.
Notes:
  • This function returns without action if there are no snapshots to restore. No error is reported in this case.


next up previous 264
Next: astGrfPush - Save the current graphics functions used by a Plot
Up: AST Function Descriptions
Previous: astGetUnc - Obtain uncertainty information from a Region

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