[R] Boxplot Labels OK

[Jose Iparraguirre]

Beatriz,

In this case, use the car package and run the following:

> bp <- Boxplot(DATA$ave, data= DATA, main= "Average Size", labels=DATA$num, Id.method=c("y"))

This will print out the labels 211 & 225 beside the outlier points. As you can see, the instruction assigns the values in the num column in the DATA data frame to the labels.

If you prefer the interactive option, replace id.method=c("y") with id.method=c("identify")

Kind regards,

José

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 17:32
To: r-help-owner at r-project.org; R Help 1; R Help 2
Subject: [R] Boxplot Labels OK

Dear all,

I have just sent an enquiry but probably I hadn’t expressed myself properly. 

Could anyone help me with the following?

When I run the code on my data I get a boxplot with outliers identified by numbers 200 & 201.
However, what I would like is to label these outliers with their corresponding “DATA$num� values of the data frame. 
In this example, the outliers should be labelled as: 211 & 225

Do you have any idea of how I could do this?

Please, if you need any more details just get in touch.

Many thanks in advance! 

## R CODE
#DATA
num <- as.numeric(200:225)
ave <- c(0.5, 1, 1.6, 2, 2, 2.3, 2.5, 2.4, 3, 3.2, 3.3, 7.2, 4, 4.8, 3.5, 2.7, 3.1, 2.8, 4.1, 2.0, 2.5, 2.1, 3.4, 2.5, 2.6, 7) DATA <- data.frame(cbind(num, ave)) rm(num, ave)

#BOXPLOT
x11()
bp <- boxplot(DATA$ave, data= DATA, main= "Average Size") identify(x= bp$group, y= bp$out, labels= DATA$num, cex = 0.7)

Bea
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