Why does a boxplot in ggplot requires axis x and y?

Question

I have a variable ceroonce which is number of schools per county (integers) in 2011. When I plot it with boxplot() it only requires the ceroonce variable. A boxplot

Answer 1

This could work for you:

ggplot(escuelas, aes(x= "", y=ceroncee)) + geom_boxplot()