How to select current number of the day of week?

Question

How can I select current number of the day of week?

For example today it's Tuesday, i.e. 2nd day, so the expected output is "2".

This code return name

weekdays(Sys.Date())

But I need a number.

Answer 1

From lubridate you can use the wday function:

library(lubridate)
wday(Sys.Date())
[1] 3

Note that in this function Sunday is the first day of the week, so the number for Tuesday is 3.