[R] mean +/- SEM

Jim Lemon jim at bitwrit.com.au
Wed Mar 11 10:13:01 CET 2009

Stefo Ratino wrote:
> Hi all,
> I am looking for a R function which unables me to plot mean +/- SEM. Is there such a function in R? 
Hi Stefo,
The "dispersion" function in the plotrix package (among many, many 
others in other packages) allows you to stick "error bars" onto almost 


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