How do I get rid of the numbers at the bottom of the boxplots?

enter image description here

ggplot(mtc, aes(cyl, disp))+
  geom_boxplot()+
  facet_wrap(~cyl)

Above is a image of boxplots using the data from mtcars in R, and my original code. How do I get rid of the numbers at the bottom of the graph, as I already have the cylinder numbers at the top?

Changing the axis.text and axis.title using theme() didn’t help. It just stretched/shrunk the plot by a tiny amount.

>Solution :

Consider using group instead of facet_wrap:

ggplot(mutate(mtc, cyl = factor(cyl)), aes(cyl, disp, group = cyl)) +
   geom_boxplot()

On using facet_wrap try:

ggplot(mtcars, aes(y=disp))+
  geom_boxplot()+
  facet_wrap(~factor(cyl))+
  scale_x_continuous(breaks = NULL)+
  xlab('cyl')