Allow clipping in facet labels

[malcolmbarrett]

By default, ggplot2 reasonably clips long facet labels. While this can be turned off by manipulating the underlying grobs, it would be nice for some circumstances if you could set clip = "off" in a related ggplot2 function, as you can in the coord_*() functions.

library(ggplot2)
iris$Species <- factor(
  iris$Species, 
  labels = c(
    "Here is a pretty long label that might not make it, if we're being totally honest", 
    "here's a shorter one", 
    "shorter yet"
  )
)

ggplot(iris, aes(Sepal.Length, Sepal.Width)) +
  geom_point() + 
  facet_wrap(vars(Species))

^{Created on 2019-12-20 by the reprex package (v0.3.0)}

[thomasp85]

It would be quite easy to make this a theme setting (I have just fiddled with that code in another matter). What say the @clauswilke, @hadley, do you have any objections to this?

[clauswilke]

I think it's a good idea.

[thomasp85]

This change intersects with #3683 so I'll wait for that to get merged

[teunbrand]

This is fixed by #4223, though the long label is obscured on the right by the strip background of the middle panel.

library(ggplot2)
iris$Species <- factor(
  iris$Species, 
  labels = c(
    "Here is a pretty long label that might not make it, if we're being totally honest", 
    "here's a shorter one", 
    "shorter yet"
  )
)

ggplot(iris, aes(Sepal.Length, Sepal.Width)) +
  geom_point() + 
  facet_wrap(vars(Species)) +
  theme(strip.clip = "off")

^{Created on 2022-05-20 by the reprex package (v2.0.1)}