Hi,
I would like to add sd bar to an existing plot. How can i do that?
For example:
library("MASS")
x <- rnorm(100)
mean <- mean(x)
sd <- sd(x)
plot(mean)
## How can i add the sd bar around the mean point?
thanks a lot
Karine HEERAH
Master 2 , océanographie et environnements marins
Université Pierre et Marie Curie (Paris 6)
42 rue Salvador Allende
92000 Nanterre
06.61.50.97.47
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