Find the day of a week

Question

Let\'s say that I have a date in R and it\'s formatted as follows.

   date      
2012-02-01 
2012-02-01
2012-02-02

Is there any way in R to

Answer 1

Use the lubridate package and function wday:

library(lubridate)
df$date <- as.Date(df$date)
wday(df$date, label=TRUE)
[1] Wed   Wed   Thurs
Levels: Sun < Mon < Tues < Wed < Thurs < Fri < Sat