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Plotting a Grid  

The most comprehensive plotting function available is astGrid, which can be used to draw labelled coordinate axes and, optionally, to overlay coordinate grids on the plotting area (Figure [*]). The routine is straightforward to use, simply requiring a pointer to the Plot:

astGrid( plot );

It will draw both linear and curvilinear axes and grids, as required by the particular Plot. The appearance of the output can be modified in a wide variety of ways by setting various Plot attributes.



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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