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astGrid - Draw a set of labelled coordinate axes

Description:
This function draws a complete annotated set of coordinate axes for a Plot with (optionally) a coordinate grid superimposed. Details of the axes and grid can be controlled by setting values for the various attributes defined by the Plot class (q.v.).
Synopsis:
void astGrid( AstPlot $*$this )
Parameters:
this
Pointer to the Plot.
Notes:
  • If the supplied Plot is a Plot3D, the axes will be annotated using three 2-dimensional Plots, one for each 2D plane in the 3D current coordinate system. The plots will be "pasted" onto 3 faces of the cuboid graphics volume specified when the Plot3D was constructed. The faces to be used can be controlled by the "RootCorner" attribute.

  • An error results if either the current Frame or the base Frame of the Plot is not 2-dimensional or (for a Plot3D) 3-dimensional.

  • An error also results if the transformation between the base and current Frames of the Plot is not defined in either direction (i.e. the Plot's TranForward or TranInverse attribute is zero).


next up previous 264
Next: astGridLine - Draw a grid line (or axis) for a Plot
Up: AST Function Descriptions
Previous: astGrfSet - Register a graphics function for use by 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