[R] How to extract the upper xlim and ylim of my plot?

[Greg Snow]

?grconvertX

-----Original Message-----
From: "Mark Na" <mtb954 at gmail.com>
To: "r-help at r-project.org" <r-help at r-project.org>
Sent: 7/21/09 3:05 PM
Subject: [R] How to extract the upper xlim and ylim of my plot?


Dear R-helpers,

I wish to place some text in a plot, at approx 10% of my upper xlim and
approx 90% of my upper ylim, i.e.

> plot(log(all$SR,10)~log(all$AREA,10))
> text(.1*max(xlim),.9*max(ylim),"text to be placed")

(I know how to give absolute coordinates for text location, but I wish to
use relative coordinates).

My code (above) doesn't work because I don't know how to properly extract
the upper xlim and ylim values.

Does anyone know how I could extract the upper xlim and ylim values (without
using max(x-variable) or max (y-variable)...I wish to keep this as general
as possible and not point to the original data.

Thanks in advance,

Mark

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