[R] Eyeball problem ...

John Logsdon j.logsdon at lancaster.ac.uk
Wed Feb 3 21:01:35 CET 1999

On Wed, 3 Feb 1999, Ben Bolker wrote:

>   Sorry to respond twice.
>   More poking around identifies (under "?par")
>     tck: The length of tick marks as a fraction of the
>           smaller of the width or height of the plotting
>           region.  If `tck=1', grid lines are drawn. The
>           default setting is to use `tcl=-0.5' (see below).
>   If we had a col.tick  (and possibly a lty.tick) parameter as well that
> would provide a bit more flexibility for plotting grids ...
>   Ben

This seems a good idea to add to the elastic wish list for graphics -
and/or a grid= option (default F) with a col.grid and lty.grid parameter.

I hadn't spotted this but you can't control the grid line so I will
continue with abline for the mo'.

Sorry for the eyestrain folks.


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