September 2018
Beginner
206 pages
4h 27m
English
Content preview from R Programming Fundamentals
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Data Management
In Chapter 2, Data Visualization and Graphics, it was mentioned that data visualization is a key part of EDA. The techniques for data management we'll discuss in this chapter constitute the other important parts of EDA, which you should always do prior to modeling and analysis. In this chapter, we will address what a factor variable is and how to use one, how to summarize your data numerically, how to combine, merge, and split datasets, and how to split and combine strings.
By the end of this chapter, you will be able to:
- Create and reorder factor variables
- Generate pivot tables
- Aggregate data using the base and dplyr packages
- Use various methods to split, apply, and combine data in R
- Split character strings using the stringr ...
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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.