[r] facet label font size

Is there a way to change the font size of facet labels in ggplot? I googled and found that the issue was yet on Hadley's to-do list. I wonder if there is a workaround or any news on this issue?

This question is related to r ggplot2

The answer is


This should get you started:

R> qplot(hwy, cty, data = mpg) + 
       facet_grid(. ~ manufacturer) + 
       theme(strip.text.x = element_text(size = 8, colour = "orange", angle = 90))

See also this question: How can I manipulate the strip text of facet plots in ggplot2?