On Tue, 2007-03-20 at 13:15 -0400, Vera, Pedro L. wrote:
> Hello:
>
> I'm having quite a bit of difficulty adjusting the x-labels using bargraphCI.
> I've tried using text and srt=45 to rotate the labels or mtext for 2 lines to
> break up the labels. However, using either method, I cannot line up the
> labels with the midpoints of the bars (they line up with some sort of tick
> mark that is off the midpoint of the bars). Any suggestions would be greatly
> appreciated.
>
> Regards
>
> Pedro L. Vera, Ph.D.
> University of South Florida, Dept of Surgery
Assuming that you are asking about bargraph.CI from the sciplot package,
and that you are trying to get x-axis tick-labels that are perpendicular
to the x-axis, specifying las=2 in the call to bargraph.CI should work.
If you want more control, you can assign the output of bargraph.CI to an
object (a list that contains the x-values of the bars, summary stats,
and CIs). This will allow you to position labels at the x-values of the
plotted bars. For example:
test <- bargraph.CI(x.factor = dose, response = len, data = ToothGrowth,
xaxt="n")
axis(side=1,at=test$xvals,labels=c("bar1","bar2","bar3"),las=2)
--
Manuel A. Morales
http://mutualism.williams.edu
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