Hi:
This seems to work:
vars2 <- c(quote(alpha), quote(beta)) # returns a list of mode call
plot(0, 0, main = bquote(bold('Foo '~.(vars2[[2]]))))
Expressions are only evaluated once, which means that inner
expressions are not evaluated. You need a call object rather than an
expression inside of bquote().
HTH,
Dennis
On Thu, Jun 2, 2011 at 11:43 AM, Marius Hofert <m_hof...@web.de> wrote:
> Dear all,
>
> I have a vector of expressions and would like to "paste" some string to it
> before using it in a plot:
>
> vars <- vector("expression", 2)
> vars[1] <- expression(alpha)
> vars[2] <- expression(beta)
> plot(0, 0, main=substitute(bold("Foo" ~~ VAR), list(VAR=vars[2]) ))
>
> Although I tried hard, I just can't figure out how to solve this. The title
> should be "Foo <theta>", where <theta> is the greek letter. I tried some
> constructions with bquote but that wasn't successful... I also looked in the
> mailing list but couldn't find anything helpful [I am sure I overlooked
> something].
>
> Cheers,
>
> Marius
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
