[R] Mathematical expression

[Uwe Ligges]

On 22.07.2010 21:47, Filoche wrote:
>
> Hi everyone.
>
> I'm trying to display the r^2 of a linear regression on a plot using
> text(...). I first build the string to display.  However, I can't find why
> this is not working (it display literally r^2 instead of r superscript 2).
>
> r2string = expression(paste(r^2)," = ", r2);
>
> Any help would be greatly appreciated,
> Phil

r2string = substitute(r^2 == r2, list(r2=r2))

Uwe Ligges