How do you draw a boxplot without specifying x axis?

Question

The base graphics can nicely plot a boxplot using a simple command

data(mtcars)
boxplot(mtcars$mpg)

Answer 1

you can set the x aesthetics to factor(0) and tweak the appearance by removing unwanted labels:

ggplot(mtcars, aes(x = factor(0), mpg)) +
    geom_boxplot() + 
    scale_x_discrete(breaks = NULL) +
    xlab(NULL)