[R] ggplot2: annotating plot with mathematical formulae

[stephen sefick]

how about this

a <- 1:10
b <- 1:10
d <- paste("x","^","{n-1}")
qplot(a,b, xlab=expression(x^{n-1}))+geom_text(aes(4,8, label=d))

On Fri, May 15, 2009 at 10:02 PM, Paul Emberson <email at calidasoft.co.uk> wrote:
> Hi,
>
> Is there a way of annotating a ggplot plot with mathematical formulae?
>
> I can do
>
> geom_text(aes(label="some text", ...
>
> but I can't do
>
> geom_text(aes(label=expression(x^{n-1}), ...
>
> It gives the error
>
> Error: geom_text requires the following missing aesthetics: label
>
> Is there a convenient equivalent?
>
> Cheers,
>
> Paul
>
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-- 
Stephen Sefick

Let's not spend our time and resources thinking about things that are
so little or so large that all they really do for us is puff us up and
make us feel like gods.  We are mammals, and have not exhausted the
annoying little problems of being mammals.

								-K. Mullis