How to convert Month in character to number, for example, September to 9

Question

I am working with a df, one column is factor, value from January to December, I want to convert them into numbers, such as January ——> 1

`df$month.num <- which(month.name == df["name_of_month_column"])` — krfurlong, Feb 05 '20 at 15:54

score 3 · Accepted Answer · answered Feb 05 '20 at 15:55

3

x <- c("September", "December", "January")
match(x, month.name)

[1]  9 12  1

answered Feb 05 '20 at 15:55

Georgery

1 Answers1