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Notched Boxplots

To: s-news@wubios.wustl.edu
Subject: Notched Boxplots
From: Madeline Bauer <mbauer@usc.edu>
Date: Tue, 30 Jun 2009 13:36:09 -0700
Many thanks to Chuck Taylor and Stephen Kaluzny for a "fix" to the bug:
They both suggest using confcol=0 (the background color) , i.e.,

      boxplot(lottery.payoff, lottery2.payoff, lottery3.payoff,
          style.bxp="old", confint=T, confcol=0)

This produces a notched boxplot, but without the shading.

Stephen also pointed out that I could get access the old graphics code by setting:

      use.legacy.graphics(TRUE)

   before starting any graphics device.
==========
My original question:
I'm using S-Plus 8.1.1 in Windows XP Pro and I would like to get the old-fashioned notched boxplots. The following command produces a boxplot with notches,

boxplot(lottery.payoff, lottery2.payoff, lottery3.payoff, style.bxp="old", confint=T)

however, the shading for the confidence interval covers the whole width of each box, rather than staying within the notches.

I also get a warning "-1 is not a valid color name ... "

I can live with the warning ... and of course I could go back and use S-Plus 2000 ... but it would be cleaner if a fix exists?

Thanks in advance!

===
Madeline Bauer, Ph.D.        University of Southern California
Keck School of Medicine (Infectious Diseases)
IRD Room 620 (MC9520), 2020 Zonal Ave, Los Angeles 90033
(323) 226-2775 [Voice] (FAX by appointment ;-)
mbauer@usc.edu  [Fastest communication method]




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