[R] xyplot: no ticks for a factor scale?

[Marcin Kozak]

Hi,

I would like to have no ticks on a scale that represents a factor. The
tick.number argument from scales does not work in such a situation, as
the help page as well as this simple (fairly stupid) code show:

require(lattice)
fact<-gl(4,1,labels=LETTERS[1:4])
y<-c(1,4,3,2)
xyplot(y~fact,scales=list(x=list(tick.number=0)))

I want to leave out the ticks at the x-axis (removing labels is easy,
of course). What can I do with that?

Thanks,
Marcin