R Graph Essentials by Lillis, David Alexander -- Read -- Imperial Library of Trantor

Index

R Graph Essentials

Table of Contents R Graph Essentials Credits About the Author About the Reviewers www.PacktPub.com

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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. Base Graphics in R – One Step at a Time

Learning basic graphics techniques Creating and joining points Creating scatterplots and line plots Colors in R Passing parameter values to titles and labels Including a regression line Graphing mathematical functions R provides many options Creating graphs with several curves Customizing your axes Creating axis labels Creating multiple graphs on the same page Saving your graphs Including mathematical expressions on your plots Summary

2. Advanced Functions in Base Graphics

Reading datasets into R Including a regression line and residuals A medical dataset to create graphs Creating complex multiple axes

Superposing graphs Creating point labels

Including a grid on your graph Shading and coloring your graph

Using polygon() to shade under a normal curve

Creating bar charts

Including a legend Creating histograms Creating boxplots Creating pie charts Creating dotcharts

R's color palettes Using smoothers on your graph Creating scatterplot matrices

Writing functions to create graphs Including error bars on your graph

Summary

3. Mastering the qplot Function

About qplot The qplot syntax Producing scatterplots using qplot Subsetting your data before graphing Mapping aesthetics to categorical variables Controlling colors on your graph Setting up graphs as objects Creating facet plots Creating line graphs using qplot Creating multiple curves simultaneously Including smoothed curves Creating histograms with qplot Creating facet plots for histograms Creating kernel density plots Creating bar charts Creating boxplots Creating graphs with dates Summary

4. Creating Graphs with ggplot

Getting started with ggplot Mapping color, shape, and size to a variable

Modifying the plotting background Controlling the legend name and legend labels Modifying the x and y axes

Creating attractive color schemes Creating curves for each factor level Creating histograms Creating bar charts

Creating a stacked bar chart Creating a grouped bar chart Creating a faceted bar chart

Creating boxplots Labeling points with text

Mapping color to text

Including regression lines Summary

Index