Is there a way to increase the font size in ggplot2? I think I need to specify something like legend.key.width = unit(2, "line") in the theme function, but that is used to adjust the keys in legends, not the font sizes. Thanks!
?theme for these kinds of questions
You can use theme_get() to display the possible options for theme. You can control the legend font size using:
+ theme(legend.text=element_text(size=X))
replacing X with the desired size.
theme(plot.title = element_text(size = 12, face = "bold"),
legend.title=element_text(size=10),
legend.text=element_text(size=9))
You can also specify the font size relative to the base_size included in themes such as theme_bw() (where base_size is 11) using the rel() function.
For example:
ggplot(mtcars, aes(disp, mpg, col=as.factor(cyl))) +
geom_point() +
theme_bw() +
theme(legend.text=element_text(size=rel(0.5)))
A simpler but equally effective option would be:
+ theme_bw(base_size=X)
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rel(0.5)result in?5.5?11.5?