July 2015
Beginner to intermediate
432 pages
9h 15m
English
Content preview from R For Dummies, 2nd Edition
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Chapter 6
Going on a Date with R
In This Chapter
Working with dates in R
Understanding the different ways of representing dates
Throwing time into the mix
Formatting dates and times for pretty printing
Operating on dates and times
All kinds of real-world data are associated with a specific date or instant in time. Companies report results each quarter. Stock markets report closing prices daily. Network analysts measure traffic by the hour (if not by the minute). And of course, scientists measure air temperature, sometimes by the minute, sometimes by the day, and have done so for decades.
Dealing with dates accurately can be a complicated task. You have to account for time-zone differences, leap years, and regional differences in holidays. In addition, people report data differently in different places. For example, what an American would write as “May 12, 2010” or “05-12-10” would be written by someone from the United Kingdom as “12 May 2010” or “12-05-10.” Working with a time instant ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.