Book Image

R Data Visualization Cookbook

By : Gohil
Book Image

R Data Visualization Cookbook

By: Gohil

Overview of this book

If you are a data journalist, academician, student or freelance designer who wants to learn about data visualization, this book is for you. Basic knowledge of R programming is expected.
Table of Contents (12 chapters)
11
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...