Add default label in ggplot

Question

I would like to add a default caption to all my charts so that I do not have to type it in for all the charts I make. Is there a way to add default text labels to a theme?

Here's what I'd like to do. I'm using my own theme (theme_bw in this example). I would like to avoid typing the caption every time I make a chart. Is there a way to add + labs(caption ="Default") inside theme_bw()?

Or can I create a new object with both + labs(caption ="Default") and + theme_bw() that could be called as + labs_and_theme

ggplot(diamonds[1:20,], aes(x=carat, y=price)) + 
  geom_point() +
  labs(caption ="Default") +
  theme_bw()

Excellent tutorial on functional programming with ggplot: rpubs.com/hadley/97970 — user 123342
– user 123342, Commented Jun 18, 2017 at 16:16

lukeA · Accepted Answer · 2017-06-18 16:11:21Z

4

You can do

library(ggplot2)
labs_and_theme <- list(
  labs(caption ="Default"),
  theme_bw() 
)
ggplot(diamonds[1:20,], aes(x=carat, y=price)) + 
  labs_and_theme + 
  geom_point()

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