On 2010-07-22 15:21, David Winsemius wrote:
On Jul 22, 2010, at 5:01 PM, Peter Ehlers wrote:
On 2010-07-22 14:40, David Winsemius wrote:
On Jul 22, 2010, at 4:24 PM, Peter Ehlers wrote:
On 2010-07-22 11:44, Marcus Liu wrote:
Hi everyone, I am plotting a boxplot with main title as main =
bquote(paste(.(ts.ind[s]), ": ", bar(zeta), " Boxplot from 2001 to
2009", sep = "")) but it doesn't work. The program said they cannot
find the function "bar". Does anyone know how to do it correctly?
Thanks.
A reproducible example with the exact error message would
be good. Anyway, it seems pretty clear what you want and
one solution is to _not_ use 'main='. For base graphics,
I usually prefer to add titles with the title() function
which will work here.
a <- pi
boxplot(rnorm(200))
title(bquote(paste(.(a), ": ", bar(zeta),
" Boxplot from 2001 to 2009", sep = "")))
It seems that setting main=<...> where <...> contains
bquote() works with plot(), but not with boxplot().
The help page for boxplot does not document a "main" argument, nor is it
in the argument list for boxplot.default or its bxp function. The
documentation for the "..." argument does not suggest, to me anyway,
that main would passed on to other graphical functions.
Well, that's not quite so. From ?bxp:
".... and main, cex.main, col.main, sub, cex.sub, col.sub, xlab,
ylab, cex.lab, and col.lab are passed to title"
I stand (or sit) corrected.
# To wit:
y <- rnorm(200)
g <- gl(2,100)
boxplot(y ~ g, main="My title")
# But I wasn't right, either:
a <- pi
boxplot(y ~ g, main=paste("hello", bquote(.(a)), "goodbye"))
boxplot(y ~ g, main=expression("hello"~~bar(zeta)~~"goodbye"))
I do usually prefer to use main="" and then supply the title
separately. But I'll wager that either Gabor or Uwe or ...
will make main= work for the OP.
Both are working on my machine.
I thought I was only getting this to work with either the
paste(..., bquote(), ...) form *or* the
expression(... bar(zeta) ...) form,
but I see that the paste() in the OP's request was not
necessary and so his question is also answered by:
boxplot(y ~ g, main =
bquote(.(a) ~~ "hello" ~~ bar(zeta) ~~ "goodbye"))
which really should have been obvious to me. Duh...
Curiously (?), plot() will accept this:
plot(0, main = bquote(paste(.(a), "hello", bar(zeta), "goodbye")))
which had led me astray.
Now, why doesn't this work with lattice's bwplot?
-Peter Ehlers
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