adding mean to boxplot

On Thu, 22 Jan 2004 19:11:08 +0100

I am a new and unexperienced user of R and got so far as to know how to
produce boxplots. I have no experience of messing with function code, so
presently I do not know how to create a boxplot with group means instead
of group medians. If somebody could help me either replace the median
with the mean or superimpose the mean onto the existing boxplot, it
would be appreciated.

You might want to also consider extended box plots or box-percentile plots
to show more information, plus the mean.  See the panel.bpplot function in
the Hmisc package.  There are many examples in the help file.
---
Frank E Harrell Jr   Professor and Chair           School of Medicine
                     Department of Biostatistics   Vanderbilt University