Thanks for the example.

On Thu, Oct 11, 2012 at 7:24 PM, William Dunlap [via R] <
ml-node+s789695n4645934h29@n4.nabble.com> wrote:

> I think that bquote, with its .() operator, suffices for [almost?] any
> single title;
> don't bother fiddling with expression(), substitute(), or parse().   (You
> can make
> those work in many situations, but if you stick with just bquote then you
> can
> spend your time on the title itself.)
>
> E.g.,
>   hist(new, main=bquote("Heart Attack (" * bar(X)==.(mean(new)) * ")"))
> or, if you want to limit the number of digits after the decimal point,
>   hist(new, main=bquote("Heart Attack (" * bar(X)==.(round(mean(new),1)) *
> ")"))
>
> Bill Dunlap
> Spotfire, TIBCO Software
> wdunlap tibco.com
>
>
> > -----Original Message-----
> > From: [hidden email]<http://user/SendEmail.jtp?type=node&node=4645934&i=0>[mailto:[hidden
> email] <http://user/SendEmail.jtp?type=node&node=4645934&i=1>] On Behalf
> > Of 1Rnwb
> > Sent: Thursday, October 11, 2012 2:32 PM
> > To: [hidden email]<http://user/SendEmail.jtp?type=node&node=4645934&i=2>
> > Subject: [R] characters, mathematical expressions and computed values
> >
> > Hello,
> >
> > I have to add "Age (bar(x)=14.3) as a title on a chart. I am unable to
> get
> > this to working. I have tried bquote, substitute and expression, but
> they
> > are only doing a part of the job.
> >
> > new<-
> > c(14.3, 18.5, 18.1, 17.7, 18, 15.9, 19.6, 17.3, 17.8, 17.5, 15.4,
> > 16.3, 15, 17.1, 17.1, 16.4, 15.2, 16.7, 16.7, 16.9, 14.5, 16.6,
> > 15.8, 15.2, 16.2, 15.6, 15, 17.1, 16.7, 15.6, 15, 15.8, 16.8,
> > 17, 15.2, 15.8, 15.7, 14.7, 17.3, 14.9, 16.8, 14.6, 19.3, 15.3,
> > 14.7, 13.3, 16.5, 16, 14.2, 16.1, 15.2, 13.4, 17.7, 15.5, 14.5,
> > 15.7, 13.6, 14.1, 20, 17.2, 16.5, 14.3, 13.7, 14.7, 15.4, 13.6,
> > 17, 17.3, 15.4, 15.5, 16.6, 15.8, 15.7, 14.7, 14.2, 14.2, 14,
> > 14.2, 19.1, 17.2, 18.3, 13.9, 16, 15.9, 14.9, 14.6, 15.9, 12.2,
> > 14.1, 12, 12.8, 17.1, 17, 15, 15.8, 15.9, 16.1, 18, 14.7, 18.9
> > )
> > hist(new, xlab='30-day Death Rate',xlim=c(7,22),main=expression("Heart
> > Attack(" * bar(X) * ")=" *
> > mean(new)))
> >
> > I would appreciate any pointers on getting this correct.
> > Thanks
> >
> >
> >
> > --
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