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 <[email protected]> schrieb am Di, 20.7.2010:
> Von: David Winsemius <[email protected]>
> Betreff: Re: [R] square brackets in expression in plots
> An: "Jannis" <[email protected]>
> CC: [email protected]
> 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
> >
> >
> >
> > ______________________________________________
> > [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.
>
> David Winsemius, MD
> West Hartford, CT
>
>
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