Do you mean something like
y<-rnorm(50)
x<-factor(sample(letters[1:5],50,replace=T))
boxplot(y~x)
text(1:5,rep(min(y),5),paste("n=",tapply(y,x,length)) )
?
(You can fiddle about with the text placement easily enough).
Also note that boxplot's varwidth parameter provides a graphical
indication of group size;
boxplot(y~x, varwidth=T)
>>> Marc Bernard <[EMAIL PROTECTED]> 30/01/2008 11:43:15 >>>
Dear all,
How can I plot the number of observations per box in a boxplot. Many
thanks,
Bernard
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