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.
--
David Winsemius, MD
West Hartford, CT
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