How do you order a nominale variable. e.g month in R?

Question

This is a very basic problem but I do not find an answer. How can I order my variable \"Month\" so that when I make a bar plot January is first, then February...?

Th

Answer 1

df$Month <- factor(df$Month,format(seq(as.Date("2013-01-01"),by="1 month",length=12),"%B"))

Then, plot again.