On Apr 1, 2011, at 12:32 PM, Marius Hofert wrote:
Dear expeRts,
I know I can't paste expressions in the normal way, but I just
couldn't figure out
how to get the following (I want to paste a character vector to an
expression vector)
right with bquote() or substitute.
vec1 <- c("a", expression(tilde(b)), "c")
vec2 <- c("1", "2", "3")
main <- as.expression(paste(vec1, vec2))
plot(0,0, main=main[2])
Do not use `paste` ... it coerces your expression to a character
value ... use `c` instead:
> main <- as.expression(c(vec1, vec2))
> plot(1,1, main=main[2])
And then, even the as.expression is superfluous:
> main <- c(vec1, vec2)
> plot(1,1, main=main[2])
--
David Winsemius, MD
West Hartford, CT
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