[R] greek letters, text, and values in labels

From: Valentin Todorov <valentin.to_at_gmail.com>
Date: Fri 28 Jul 2006 - 00:28:22 EST

Unfortunately this does not work for lattice graphics. In such case I do something like the following, but I still do not know how to plot Greek letters in the panel titles:

theta <- 2.1
gr <- as.factor(c(1,2))
levels(gr)[1]<-"Group 1"
levels(gr)[2]<-"Group 2"

    xlab=eval(substitute(expression(paste(theta, " = ", tval)), list(tval=theta))),

    ylab=eval(substitute(expression(paste(theta, " = ", tval)), list(tval=theta))),

    main=eval(substitute(expression(paste("Results for ",theta, " = ", tval)), list(tval=theta))),

    sub=eval(substitute(expression(paste(theta, " = ", tval)), list(tval=theta)))



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