[R] Impaired boxplot functionality - mean instead of median

[Evgeniy Kachalin]

Hello to all users and wizards.

I am regulary using 'boxplot' function or its analogue - 'bwplot' from 
the 'lattice' library. But they are, as far as I understand, totally 
flawed in functionality: they miss ability to select what they would 
draw 'in the middle' - median, mean. What the box means - standard 
error, 90% or something else. What the whiskers mean - 100%, 99% or 
something else.
Is there any way to realize it? Or is there any other good data 
visualization function for comparing means of various data groups? 
Ideally I would like to have a bit more customised function for doing 
that. For example, 'boxplot(a~b,data=d,mid='mean').


-- 
Evgeniy, ICQ 38317310.