Modifying fonts in ggplot2

Question

I am looking for a way to modify font types in ggplot. At the moment I would be happy enough to simply change fonts to the \'courier\' font family, but ultimately my goal is

Answer 1

I think your answer is fine but you can do it more simply:

install.packages("extrafont");library(extrafont)
font_import("Trebuchet MS")
library(ggplot2)
qplot(1:10)+theme(text=element_text(family="Trebuchet MS"))