Book Image

Hands-On Data Science with R

By : Vitor Bianchi Lanzetta, Doug Ortiz, Nataraj Dasgupta, Ricardo Anjoleto Farias
Book Image

Hands-On Data Science with R

By: Vitor Bianchi Lanzetta, Doug Ortiz, Nataraj Dasgupta, Ricardo Anjoleto Farias

Overview of this book

R is the most widely used programming language, and when used in association with data science, this powerful combination will solve the complexities involved with unstructured datasets in the real world. This book covers the entire data science ecosystem for aspiring data scientists, right from zero to a level where you are confident enough to get hands-on with real-world data science problems. The book starts with an introduction to data science and introduces readers to popular R libraries for executing data science routine tasks. This book covers all the important processes in data science such as data gathering, cleaning data, and then uncovering patterns from it. You will explore algorithms such as machine learning algorithms, predictive analytical models, and finally deep learning algorithms. You will learn to run the most powerful visualization packages available in R so as to ensure that you can easily derive insights from your data. Towards the end, you will also learn how to integrate R with Spark and Hadoop and perform large-scale data analytics without much complexity.
Table of Contents (16 chapters)

Retrieving tweets from R community

Twitter has a web API that can be used to retrieve text (tweets) from it. A package named rtweet provides an interface to use it. Once we get used to it, it is very easy to scrape tweets. In this section, we are going to use rtweet to check what packages the R community tweet about, specifically which packages they talk about that most so that we can see whether we know about them. Make sure that rtweet is properly installed with the following code line:

if(!require(rtweet)){install.packages('rtweet')}

Using the rtweet package, along with some others that might aid us in the data cleaning process, we will count how many times R packages were mentioned using the rstats hashtag over 15,000 tweets. Besides internet connection, the proper use of rtweet also demands an authorization token and consequently a Twitter account. Most of the...