[R] Two math expressions in plot

[Gabor Grothendieck]

Try bquote:

plot(0, 0, main = bquote(n == .(k) * "," ~ N[eff] == .(n.eff[k])))


On Thu, Oct 9, 2008 at 12:22 PM, Giovanni Petris <GPetris at uark.edu> wrote:
>
> Hello!
>
> I am trying to put two math expressions in the title of a plot.  As
> you can see below, I can place correctly one expression at a time, but
> not both. Ideally I would like to have them separated by a comma. Any
> suggestions?
>
>> k <- 1
>> n.eff <- c(20, 30)
>> ### this works
>> plot(0,0, main = substitute(n == k, list(k = k)))
>> ### this works
>> plot(0,0, main = substitute(N[eff] == neff, list(neff = n.eff[k])))
>> ### this doesn't work
>> plot(0,0, main = substitute(n == k * N[eff] == neff, list(k = k, neff = n.eff[k])))
>
> Thanks in advance,
> Giovanni
>
> --
>
> Giovanni Petris  <GPetris at uark.edu>
> Associate Professor
> Department of Mathematical Sciences
> University of Arkansas - Fayetteville, AR 72701
> Ph: (479) 575-6324, 575-8630 (fax)
> http://definetti.uark.edu/~gpetris/
>
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