Aloha,
For the following bar graph:
x <- ggplot(foo, aes(x=variety, y=percent)) + geom_bar()
The following italicizes all of my x-axis text:
x + opts(axis.text.x=theme_text(face='italic'))
However, I would like to italicize only the species names, not the control.
levels(foo$variety)
"control" "species1" "species2" "species3"
Any suggestions?