[R] axis tick colors: only one value allowed?

Hans W Borchers hwborchers at googlemail.com
Tue Dec 13 15:21:31 CET 2011

Carl Witthoft <carl <at> witthoft.com> writes:

> Hi,
> So far as I can tell, the 'col.ticks' parameter for axis() only uses the 
> first value provided.  E.g.:
>   plot(0:1,0:1, col.ticks=c('blue','red','green'))  #all ticks are blue
> Just wondering if there's a different option in the basic plot commands 
> that can handle multiple colors, and also whether ggplot and/or lattice 
> allow for multiple tick colors.

See `?axis' or try this:

    plot(0:1,0:1, type = "n", axes = FALSE)
    axis(side=1, lwd.ticks = 2, col.ticks="blue")
    axis(side=2, lwd.ticks = 2, col.ticks="red")

> [...]
> Carl

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