[R] adding standard errors to a histogram plot?

[Michael A. Miller]

I'm using hist( size, breaks = 10*c(0:100), freq=TRUE ) to show
the distribution of data.  Is there a way to add lines
representing standard errors to such a plot?

A related question: can anyone provide an example of how to bin
my data and create a box plot from it?

Regards, Mike

-- 
Michael A. Miller                      mmiller3 at iupui.edu
  Krannert Institute of Cardiology, IU School of Medicine
  Indiana Center for Vascular Biology and Medicine
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