I think that careful examination will show that Henrique's solution is not quite right: the text '=' character is slightly different than the symbol font character. This is admittedly nitpicking, but ...
try instead: text(2,8,bquote(paste(delta==mu^2,phantom()==.(mu^2)))) Cheers, Bert Gunter Genentech Nonclinical Biostatistics -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Henrique Dallazuanna Sent: Monday, January 25, 2010 12:10 PM To: Larry Hotchkiss Cc: [email protected] Subject: Re: [R] Two == expressions in bquote Try this: text(2,8, bquote(delta~'='~mu^2 == .(mu^2))) On Mon, Jan 25, 2010 at 6:00 PM, Larry Hotchkiss <[email protected]> wrote: > Hi, > > I want to put text on a plot containing something like: a = b^2 = <squared numeric value of b> using bquote. > > Example: > > mu = 5 > plot(1:10,1:10) > text(2,8, bquote(delta == mu^2)) # This works > text(2.5,8, bquote(phantom(0) == .(mu^2))) # but is unpredictable > > text(2,8, bquote(delta == mu^2 == .(mu^2))) # This doesn't work > > The last text function returns the error: > > Error: unexpected '==' in " text(2,8, bquote(delta == mu^2 ==" > > The first two text functions work in this example, using a default graphics window on a 64-bit Windows machine, and either R 2.11.0 development edition for 64-bit Windows or R 9.2.2 on the same machine ((x 86)). > > I don't mind the two statements except that when trying to automate this by using the base x coordinate + epsilon*max(x), for example -- > > x <- 1:10 > epsilon=0.05 > text(2+esilon*max(x),8, bquote(phantom(0) == .(mu^2))) > > for the x position on the 2nd text function, the position of the additional text is not predictable. > > Thanks, > > Larry Hotchkiss > > ______________________________________________ > [email protected] 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. > -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40" S 49° 16' 22" O ______________________________________________ [email protected] 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. ______________________________________________ [email protected] 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.
