[R] questions about boxplots
Stephen D. Weigand
weigand.stephen at charter.net
Tue Sep 27 05:16:50 CEST 2005
On Sep 26, 2005, at 6:56 PM, Yulei He wrote:
> Hi, there.
> I have two questions about using R to create boxplots.
> 1. The function boxplot() plots the outliers. How can I label the exact
> values arount these outlier points? Does R have an option allow me to
> do that?
You can use identify(). Here's a toy example
y <- rt(30, 3)
identify(x = rep(1,30), y = y, label = format(y, digits = 2))
### now click on the outlier in the plot and you should see "-7.398"
### beside the outlier
> 2. How can I put two boxplots in one x-y axis?
x <- rnorm(10)
y <- rnorm(20, 3, 5)
z <- runif(30)
boxplot(x, y, z, labels = c("x", "y", "z"))
### - or -
boxplot(list(x = x, y = y, z = z))
Rochester, Minnesota, USA
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