Here is one way.
...
usr <- par("usr") # get user coordinates
par(usr = c(0, 1, 0, 1)) # new relative user coordinates
text(0.1, 0.5, "Some text", adj = 0) # if that's what you want
par(usr = usr) # restore original user coordinates
...
If you were going to be doing this a lot, you could write a simple
wrapper function to text(...) to incorporate this change to relative
coordinates and back again.
Bill Venables
CSIRO Laboratories
PO Box 120, Cleveland, 4163
AUSTRALIA
Office Phone (email preferred): +61 7 3826 7251
Fax (if absolutely necessary): +61 7 3826 7304
Mobile: +61 4 8819 4402
Home Phone: +61 7 3286 7700
mailto:[EMAIL PROTECTED]
http://www.cmis.csiro.au/bill.venables/
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of Tom La Bone
Sent: Thursday, 13 March 2008 12:34 AM
To: r-help@r-project.org
Subject: [R] Specifying relative position of text in a plot
What is the simplest way to specify the location of text in a scatter
plot
(created using the plot function) in relative terms rather than specific
x-y
coordinates? For example, rather than putting text at (300,49) on a
plot,
how do I put it 1/10 of the way over from the y axis and 1/2 of the way
up
from the x axis? Thanks.
Tom
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