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R Data Visualization Cookbook

You're reading from   R Data Visualization Cookbook Over 80 recipes to analyze data and create stunning visualizations with R

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Product type Paperback
Published in Jan 2015
Publisher
ISBN-13 9781783989508
Length 236 pages
Edition 1st Edition
Languages
Tools
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Toc

Table of Contents (12) Chapters Close

Preface 1. A Simple Guide to R FREE CHAPTER 2. Basic and Interactive Plots 3. Heat Maps and Dendrograms 4. Maps 5. The Pie Chart and Its Alternatives 6. Adding the Third Dimension 7. Data in Higher Dimensions 8. Visualizing Continuous Data 9. Visualizing Text and XKCD-style Plots 10. Creating Applications in R Index

Generating a comparison cloud


A comparison cloud works on the same principles as a word cloud. A comparison cloud allows us to study the differences or similarities between two or more individuals' speeches or literature by simply plotting the word cloud of each against the other. In this recipe, we will study the inaugural speeches given by President Obama and former president George Bush. The two clouds provide us with a great contrast on how these individuals perceive the nation and its citizens. We require the wordcloud package as well as the tm package to generate the cloud. Note that a comparison cloud is not limited to just two individuals.

Getting ready

In order to create a comparison cloud, we will use the following two packages in R:

  • tm

  • wordcloud

How to do it…

In order to generate a comparison cloud, we will first install and load the two packages in R using the install.packages() function as well as the library() function. To create a comparison cloud, we will first create a new...

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