[R] Point labels

[Gavin Simpson]

There is a very simple and nice example of how to go about producing
this result in John Maindonald's "Using R for data analysis and
graphics", found at:

http://cran.r-project.org/doc/contrib/usingR.pdf

Section 3.3 Adding points lines and text would seem to be what you are
after, including how to get the 1 character offsets for the label of
each point.

The example goes as follows, using files from JM's home page (there is
link to it from http://cran.r-project.org/other-docs.html )

> attach(primates)
> plot(x=Bodywt, y=Brainwt, pch=16, xlab="Body weight (kg)", 
	ylab="Brain weight (g)",xlim=c(5,240), ylim=c(0,1500))
> chw < <- par()$cxy[1]
> text(x=Bodywt+chw, y=Brainwt, labels=row.names(primates), adj=0)

Which places labels to the right of the plotted points.

Substitute your variables and row.names/vector of labels for the ones
used above, but I'd recommend downloading JM's guide as it is a very
good introduction to all things R.

All the best

Gavin Simpson

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Gavin Simpson                     [T] +44 (0)20 7679 5402
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-----Original Message-----
From: owner-r-help at stat.math.ethz.ch
[mailto:owner-r-help at stat.math.ethz.ch] On Behalf Of Daniel Mastropietro
Sent: 21 May 2002 22:32
To: r-help at stat.math.ethz.ch
Subject: [R] Point labels


Hello,
Is there an option I can easily set to put labels next to the points in
a 
simple plot?
The closest I got to it was to use the option pch, but this replaces the

point symbol with the character specified, and it is not what I want.
Thanks
  

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