从日期格式获取星期数

Question

My dataframe has a date vector which in the format of :2/14/2003, 11/30/2007, 10/18/2002.

Doing a print command gives me numbers:

> print (c(movieDB$releaseDate[1:5]))
[1] 461 304 130 495 858

How do I extract week numbers from this data?

Thanks Sinha

Answer 1

Put your dates into date format and then use the lubridate package:

library(lubridate)
d <- as.Date("11/30/2007", format="%m/%d/%Y")
d
week(d)

#48