x<- sample(1:14, 319, rep=T)
hist(x, freq=F,  xlab='',ylab="Percent of Total", col="skyblue",
labels=TRUE, right=FALSE,main="Position of Hypothetical Protein")

Is there is way to round the labels to 2 decimal digits, for example, 0.088
is changed to 0.09.

Thanks!

-- 
Sincerely,
Changbin
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