Dear Duncan, dear David, thanks for the reply! I knew about Duncans solution, but could not figure out how to combine it that the 'm*s^-1' can be read from a string. Is there a way to tweak Davids suggestion in a way that this is possible?
E.g.: a='m*s^-1' b='speed~bgroup("[",a, "]")' plot(1:10,main=parse(text=b)) Cheers Jannis --- David Winsemius <dwinsem...@comcast.net> schrieb am Di, 20.7.2010: > Von: David Winsemius <dwinsem...@comcast.net> > Betreff: Re: [R] square brackets in expression in plots > An: "Jannis" <bt_jan...@yahoo.de> > CC: r-h...@stat.math.ethz.ch > Datum: Dienstag, 20. Juli, 2010 18:06 Uhr > > On Jul 20, 2010, at 12:42 PM, Jannis wrote: > > > Dears, > > > > > > do you know whether it is possible to include any > square parantheses (brackets) in an expression to use it as > an axis label? > > > > e.g. I would like to have a label like (with the sub > and superscripts correct): > > > > "speed [m s^-1]" > > Not exactly clear what you mean by "correct". > > > > I know how to combine an expression with text via > paste, but as I run soimething like: > > > > a='m*s^{-1}' > > plot(1:10,main=parse(text=a)) > > ?plotmath > > This seemed to work fine with main, sub and xlab: > > a='speed [m*s^-1]' > plot(1:10,main=parse(text=a)) > > But maybe you wanted the square-brackets? > > a='speed~bgroup("[", m*s^-1, "]")' > plot(1:10,main=parse(text=a)) > > > > > I found now way of doing this. I use the parse thing > as I have all these units stored as strings that represent > expressions. > > > > > > Cheers for any help! > > > > Jannis > > > > > > > > ______________________________________________ > > 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. > > David Winsemius, MD > West Hartford, CT > > ______________________________________________ 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.