hide a legend with ggplot [duplicate]

Question

This question already has answers here:

ggplot2 plot without axes, legends, etc (9 answers)

Closed 9 years ago.

Suppose for example I have

ggplot(data=PlantGrowth, aes(x=group, y=weight, fill=group)) + geom_boxplot()

and I don't want to display the legend. What is the simplest way to hide or remove the legend from a plot?

Answer 1

Add theme(legend.position="none"), like this:

ggplot(data=PlantGrowth, aes(x=group, y=weight, fill=group)) + 
  geom_boxplot() + 
  theme(legend.position="none")

(source)