[R] Boxplot Labels

Jose Iparraguirre Jose.Iparraguirre at ageuk.org.uk
Tue Apr 9 17:36:53 CEST 2013

Estimada Beatriz,

If you use the Box.plot function in the car package (notice that here it's Box.plot, not box.plot), and add the argument id.method=c("identify"), it should work.
You only need one instruction:

R> library(car)
R> bp <- Boxplot(DATA$ave, data= DATA, main= "Average Size",id.method=c("identify"))

Kind regards,


José Iparraguirre
Chief Economist
Age UK

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-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of Beatriz González Domínguez
Sent: 09 April 2013 16:17
To: R Help; r-help at r-project.org
Subject: [R] Boxplot Labels

#Dear all,

#Could anyone help me with the following?
num <- as.numeric(seq(100:125))
ave <- c(0.5, 1, 1.6, 2, 2, 2.3, 2.5, 2.4, 3, 3.2, 3.3, 4, 4.8, 3.5, 2.7, 3.1, 2.8, 3.5, 4.1, 2.0, 2.5, 2.1, 3.4, 2.5, 2.6, 7)
DATA <- data.frame(cbind(num, ave))
rm(num, ave)

bp <- boxplot(DATA$ave, data= DATA, main= "Average Size")
identify(x= bp$group, y= bp$out, labels= DATA$num, cex = 0.7) 
#I would like the labels that appear in the boxplot to be DATA$num values. 
#When I identify the outlier it appears a "1" when I would like to appear a "26"

#Do you have any idea of how I could do that?

#Many thanks!
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