[R] stripchart-y axis labels

[matgopa1@umbc.edu]

Hello,

I am trying to create a stripchart for my data, where y axis labels are
characters (ie,names of cities).  I would like to change the orientation
of the y - axis labels, ie perpendicular to y axis.
Below is the code i am using:

par(srt=90)
with(ozone.ne.trim,
	stripchart(Median~City,main = "stripchart(ozone)"))

The par option doesn't seem to working.

Kindly help.

Thanks
mathangi.