October 2015
Beginner to intermediate
246 pages
4h 55m
English
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ggplot2 – first steps
ggplot2 (an acronym for Grammar of Graphics plot) is the most popular graphical package in R. This relies mainly on the fact that almost anything can be drawn with it. This huge flexibility, however, implies more complexity while drawing.
The underlying concept of ggplot2 is an empty canvas. Instead of specifying the type of plot and the data to be visualized, the ggplot2 functions expect vectors that denote positions, widths, sizes, and so on. From its conceptual point of view, this is very similar to an HTML document; this is an empty space that is filled with different objects to which different characteristics are specified. The following example is the equivalent of plot(iris$Sepal.Length):
ggplot.graph <- ggplot(data=iris) ...
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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.