On 1/24/08, Bert Gunter <[EMAIL PROTECTED]> wrote: > I should have perhaps phrased my previous post better as: the result of > bquote() is a language expression argument of mode "call" which gets > evaluated by the plotmath functionality in your first plot call, but gets > evaluated in the global environment in the second before being passed back > to the plot.default method that will be called by plot.formula to do the > plot.
Right, and the solution is to coerce to expression explicitly: plot(y ~ x, main=as.expression(bquote( paste( p==.(p)," and ",phi==.(phi))))) -Deepayan > -- Bert Gunter > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On > Behalf Of Schools Statistics Poster Competition > Sent: Thursday, January 24, 2008 5:58 PM > To: R-help mailing list > Subject: [R] Using bquote: question > > Hi all > > Observe: > > x <- c(1,2) > y <- c(1,-1) > > phi <- 1 > p <- 2 > > par( mfrow=c(1,2)) > plot(x , y, main=bquote( paste( p==.(p)," and ",phi==.(phi)) ) ) > plot(y ~ x, main=bquote( paste( p==.(p)," and ",phi==.(phi)) ) ) > par( mfrow=c(1,2)) > > > On my system (details below), the first plot is correct (in my > understanding), and produces a title reading "p=2 and phi=1" (with > appropriate Greek for phi). > > However, the second produces the title "TRUE and TRUE". > > Is this a bug, or a misunderstanding or my part(in which case, I'm > sure I'll be told the obscure location where this is documented!)? > > Thanks. > > P. > > > > sessionInfo() > R version 2.6.0 (2007-10-03) > i486-pc-linux-gnu > > locale: > LC_CTYPE=en_AU.UTF-8;LC_NUMERIC=C;LC_TIME=en_AU.UTF-8;LC_COLLATE=en_AU.UTF-8 > ;LC_MONETARY=en_AU.UTF-8;LC_MESSAGES=en_AU.UTF-8;LC_PAPER=en_AU.UTF-8;LC_NAM > E=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=en_AU.UTF-8;LC_IDENTIFICATION > =C > > attached base packages: > [1] stats graphics grDevices utils datasets methods base > > other attached packages: > [1] tweedie_1.5.3 statmod_1.3.0 > > loaded via a namespace (and not attached): > [1] rcompgen_0.1-15 > > > > > This email (including any attached files) is confidentia...{{dropped:15}} > > ______________________________________________ > 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. > ______________________________________________ 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.
