[R] Paste expression in graph title

[Henrique Dallazuanna]

Try this:

plot(x, y, main = bquote(R^2 == .(round(summary(lm(y ~ x))$r.squared, 3))))


On Mon, Jan 25, 2010 at 10:06 AM, Paul Chatfield
<p.s.chatfield at reading.ac.uk> wrote:
>
> This was my initial attempt at creating a title on a graph of the R squared
> value:
>
> x<-rnorm(10)
> y<-rnorm(10)
> plot(x,y, main=paste(expression(R^2)," = ",round(summary(lm(y~
> x))$r.squared, digits=3), sep=""))
>
> I've read various other posts that say expression needs to be taken outside
> the paste, but I can't seem to get it work as the following fails
>
> plot(x,y, main=expression(paste("R^2"," = ",round(summary(lm(y~
> x))$r.squared, digits=3), sep="")))
>
> I tried it with title() and didn't get much further either.
>
> Hmmm, any ideas what am I missing?
>
> Thanks
>
> Paul
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-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O