[R] Using bquote: question

Schools Statistics Poster Competition statscomp at usq.edu.au
Fri Jan 25 02:57:45 CET 2008

Hi all


x <- c(1,2)
y <- c(1,-1)

phi <- 1
p <- 2

par( mfrow=c(1,2))
plot(x , y, main=bquote( paste( p==.(p)," and ",phi==.(phi)) ) )
plot(y ~ x, main=bquote( paste( p==.(p)," and ",phi==.(phi)) ) )
par( mfrow=c(1,2))

On my system (details below), the first plot is correct (in my 
understanding), and produces a title reading "p=2 and phi=1" (with 
appropriate Greek for phi).

However, the second produces the title "TRUE and TRUE".

Is this a bug, or a misunderstanding or my part(in which case, I'm 
sure I'll be told the obscure location where this is documented!)?



> sessionInfo()
R version 2.6.0 (2007-10-03)


attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

other attached packages:
[1] tweedie_1.5.3 statmod_1.3.0

loaded via a namespace (and not attached):
[1] rcompgen_0.1-15

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