[R] [Q] use of expression() in plot() vs. hist()

[Alex Buerkle]

In plot() I can get greek symbols into text items without trouble.
However, some of the same commands don't work as I would expect with
hist(). See the example below.

> plot(1:10, 2:11, xlab=expression(paste("scaled", rho)))

	---- works as expected, ie. prints the greek rho

> hist(c(0,0,0,0,4,5,6,6,6,8), xlab=expression(paste("scaled", rho)))
Error: Object "rho" not found

        ---- for kicks I tried sigma, it also was not found

Surprisingly the following worked:
> hist(c(0,0,0,0,4,5,6,6,6,8), xlab=expression(paste("scaled", pi)))

        ---- works as expected, ie. prints the greek pi


Does anyone have any suggestions for how to get such expressions into
hist()?

thanks, Alex

~^^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^~^
C. Alex Buerkle                 Ph:  812-855-9018
Jordan Hall 142                 Fax: 812-855-6705
Department of Biology           
Indiana University
Bloomington, IN 47405    cbuerkle at bio.indiana.edu


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