[R] ggplot2: expression() in legend labels?

Casper Ti. Vector caspervector at gmail.com
Sat Sep 24 10:49:03 CEST 2011

Is there any way to use expression() in legend labels with ggplot2?

It seems that things like
> scale_shape_manual(value = c(
>   x = expression(italic(x)),
>   y = expression(italic(y))
> ))
don't work.

Thanks very much :)

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