ggplot2 Essentials

Donato Teutonico

• Verlag: Packt Publishing
• Jahr: 2015
• ISBN:
  9781785283529
• Auflage: 1
• Thema: Informatique
• Thema: Visualisation de données

ggplot2 Essentials

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Table of Contents

ggplot2 Essentials

Credits

About the Author

About the Reviewers

www.PacktPub.com

Support files, eBooks, discount offers, and more

Why subscribe?

Free access for Packt account holders

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Downloading the example code

Downloading the color images of this book

Errata

Piracy

Questions

1. Graphics in R

Getting ggplot2 up and running

Packages in R

The Integrated Development Environment

RStudio

Eclipse and StatET

Emacs and ESS

The plotting environments in R

Standard graphics and grid-based graphics

Graphics and standard plots

Scatterplots with individual data points

Scatterplots with the line of one tree

Scatterplots with the line and points of one tree

Boxplots of the orange dataset

Boxplots with individual observations

Histograms of the orange dataset

Histograms with the reference line at the median value in red

Lattice and Trellis plots

Scatterplots with individual observations

Scatterplots of the orange dataset with faceting

Faceting scatterplots with line and points

Scatterplots with grouping data

Boxplots of the orange dataset

Histograms of the orange dataset

Histograms with the reference line at the median value in red

ggplot2 and the grammar of graphics

Further reading

Summary

2. Getting Started

General aspects

Introduction to aesthetic attributes

Introduction to faceting

Histograms and density plots

Bar charts

Boxplots

Scatterplots

Time series

Bubble charts and dot plots

Further reading

Summary

3. The Layers and Grammar of Graphics

Components of layered grammar

Creating a plot layer by layer with the ggplot function

Scales

The coordinate system

Faceting

Grid faceting

Wrap faceting

Layers in ggplot2

Data

Aesthetic mapping

Geometric

Stat

Position adjustment

Position adjustment of categorical data

Position adjustment of continuous data

Equivalent coding between qplot and ggplot

Histograms and density plots

Bar charts

Boxplots

Scatterplots

Further reading

Summary

4. Advanced Plotting Techniques

Adding statistics

Smooth lines

Linear regression

Statistics with faceting

Advanced aesthetic mapping

Typical aesthetic mappings available in ggplot2

Mapping the aesthetic to new stat variables

Difference in mapping continuous and categorical variables

Adding text and reference lines to plots

Add text and reference lines with facets

Plots with polar coordinates

A pie chart

A bullseye chart

A coxcomb diagram

Further reading

Summary

5. Controlling Plot Details

Exploring scales

The plot title and axis labels

Axis scales

The discrete axis

The continuous axis

Axis transformations

Legends

The legend title

Legend keys and key labels

Themes

Themes for the legend

Themes for the axis and title

Themes for the plot background

Themes with facets

Further reading

Summary

6. Plot Output

Multiple plots in one page

Arranging plots in rows and columns

Specifying the plot position

Saving plots to a file

Saving the plot manually

Saving the plot to a file without rendering it

Saving a single plot

Saving multiple plots on the same PDF file

Saving the plot after rendering it

Further reading

Summary

7. Special Applications of ggplot2

Plotting maps with ggplot2 and ggmap

Mapping representations with ggplot2 and maps

Representing maps with ggmap

Scatterplot matrix with GGally

Plotting heatmaps with ggplot2

Further reading

Summary

Index

ggplot2 Essentials

Copyright © 2015 Packt Publishing

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First published: June 2015

Production reference: 1220615

Published by Packt Publishing Ltd.

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ISBN 978-1-78528-352-9

www.packtpub.com

Credits

Author

Donato Teutonico

Reviewers

Juanjo Abellan

Niels W. Hanson

Sefa Kilic

Commissioning Editor

Julian Ursell

Acquisition Editors

Tushar Gupta

Owen Roberts

Content Development Editor

Samantha Gonsalves

Technical Editor

Siddhesh Patil

Copy Editor

Sarang Chari

Project Coordinator

Kinjal Bari

Proofreader

Safis Editing

Indexer

Monica Mehta

Graphics

Disha Haria

Jason Monteiro

Production Coordinator

Arvindkumar Gupta

Cover Work

Arvindkumar Gupta

About the Author

Donato Teutonico has received his PharmD degree from the University of Turin, Italy, where he specialized in chemical and pharmaceutical technology, and his PhD in pharmaceutical sciences from Paris-South University, France. He has several years of experience in the modeling and simulation of drug effects and clinical trials in industrial and academic settings. Donato has contributed to numerous scientific projects and publications in internation...