February 2018
Beginner
360 pages
7h 4m
English
Content preview from R Projects For Dummies
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Chapter 3
Getting Graphic
IN THIS CHAPTER
R Base graphics
Kicking it up a notch with ggplot2
From its very beginnings, R has been about data visualization as much as data analysis. That’s because a good graph enables an analyst to spot trends and make predictions. Graphics also help you present your ideas to others. And as you’ll see, graphics are the lifeblood of the projects in this book.
The R community has developed a considerable number of graphics packages. In this chapter, I introduce you to the two most widely used ones: the base graphics package that comes with your R installation and ggplot2, which is part of the tidyverse package I discuss in Chapter 2. As we get into the projects, I use other packages as necessary.
Touching Base
Base R enables you to develop a wide variety of graphs. Its general format for creating (most) graphics is
graphics_function(data, argument1, argument2, …)
That's pretty much it!
After you create a graph in RStudio, click the Zoom icon on the RStudio Plots tab to open the graph in a larger window. The graph is clearer in the Zoom window than it is on the Plots tab.
Histograms
One way of finding trends in data is to examine the frequencies ...
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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.