From: David Winsemius <dwinsemius_at_comcast.net>

Date: Fri, 01 Apr 2011 14:34:44 -0400

R-help_at_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. Received on Fri 01 Apr 2011 - 18:37:41 GMT

Date: Fri, 01 Apr 2011 14:34:44 -0400

On Apr 1, 2011, at 1:56 PM, Marius Hofert wrote:

> Dear David,

*>
**> thanks for your reply. The paste() meant to paste the vectors vec1
**> and vec2 together, so main should be a vector of length 3 of the form
**> "a 1", "b 2", "c 3" # with b being tilde(b)
**> However, with c() it is a vector of length 6:
**> expression("a", tilde(b), "c", "1", "2", "3")
*

lls <-c("a", "tilde(b)","c")

mains <- bquote(.(parse(text=paste(lls,"~",nns,sep=""))) )
mains

> mains[2]

#expression(tilde(b)~2)

*>
*

> Do you know a solution for that?

*>
**> Cheers,
**>
**> Marius
**>
**> On 2011-04-01, at 19:22 , David Winsemius wrote:
**>
**>>
**>> 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
**>>
**>
*

David Winsemius, MD

West Hartford, CT

R-help_at_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. Received on Fri 01 Apr 2011 - 18:37:41 GMT

Archive maintained by Robert King, hosted by
the discipline of
statistics at the
University of Newcastle,
Australia.

Archive generated by hypermail 2.2.0, at Fri 01 Apr 2011 - 19:00:27 GMT.

*
Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help.
Please read the posting
guide before posting to the list.
*