CODEWITHSUNDEEP
rggplot2r-markdownfont-size
talbe009
talbe009

Reputation: 81

How to change the default font size in ggplot2 - including geom_text

This post was great to set a base size for all my plots in R Markdown docs, which I usually work in (e.g., theme_set(theme_grey(base_size = 18)). However, as someone eluded to in the comments, geom_text() does not inherit theme_set(). Have any suggestions?

I am open to completely different ideas for managing font size in ggplot plots in R Markdown. FYI, I usually knit to Word and then upload to Google Drive.

Upvotes: 2

Views: 1551

Answers (1)

Julius Vainora
Julius Vainora

Reputation: 48251

geom_text indeed doesn't inherit theme_set(). See here how we have size = 3.88 set directly. However, the same source code suggests to use the following.

GeomText$default_aes$size <- 1
ggplot(mtcars, aes(wt, mpg, label = rownames(mtcars))) + geom_text()

enter image description here

Now this works only for geom_text, but I don't think it's a good idea to set the same size for every single thing anyway (axes text, titles, etc.). However, it seems to be analogous with others geoms, e.g.,

GeomLabel$default_aes$size
# [1] 3.88

Update: there seems to exist a formal function doing basically the same:

update_geom_defaults("text", list(size = 10))

Upvotes: 3

Related Questions