[R] legend + expression

From: Pedro Mardones <mardones.p_at_gmail.com>
Date: Fri, 08 Jun 2007 17:27:44 -0400

Dear all;

A simple? question.

I'm having a problem with a math expression in the legend of a plot and I haven't found the way to get this to work, so any help will be appreciate. Basically I want to include in the plot is the R-squared and its numerical value, so I tried this:

R2c<-0.82879 # R-squared of calibration model plot(1:10,1:10)
legend("topleft", legend=c(expression(R[c]^2==format(R2c,nsmall=2))))

Thanks for any hint


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