R: How to change the text size of the plot title in ggplot

Question

I want to change the text size of the title of the plot created using ggplot. The default size is big for my plot. How can I do it?

Answer 1

You can use the theme() with the argument "plot.title".

In the following example, the title size is set to 12.

plt <- ggplot(df, aes(x=x, y=y,...)) +

theme(plot.title = element_text(size=12))