How to annotate() ggplot with latex

Question

I\'d like to add latex text to a ggplot2 plot using annotate(). Using expression(), as described here for adding latex to axis labels, does not see

Answer 1

There is an R package called latex2exp which may be helpful. It has function TeX which accepts some LaTeX expressions enclosed with dollar sign $ as in this example:

library(latex2exp)
library(ggplot2)

qplot(1, "A")+
     ylab(TeX("Formula: $\\frac{2hc^2}{\\lambda^\\beta}$"))+
     xlab(TeX("$\\alpha$"))

More examples can be found in this vignette.