R Data Science Quick Reference: A Pocket Guide to APIs, Libraries, and Packages

© Thomas Mailund 2019

Thomas MailundR Data Science Quick Referencehttps://doi.org/10.1007/978-1-4842-4894-2_10

10. Working with Dates: lubridate

Thomas Mailund¹ 

(1)

Aarhus, Denmark

 

The lubridate package is essential for working with dates and fits well with the Tidyverse. It is not, however, loaded when you import the tidyverse package, so you need to explicitly load it.

library(lubridate)

Time Points

You can create dates and dates with time-of-day information using variations of the ymd() function . The letters y, m, and d stand for year, month, and day, respectively. With ymd() you should write your data in a format that puts the year first, the month second, and the day last. The function is very flexible in what it can parse as a date.

ymd("1975 ...