Book Image

R for Data Science Cookbook (n)

By : Yu-Wei, Chiu (David Chiu)
Book Image

R for Data Science Cookbook (n)

By: Yu-Wei, Chiu (David Chiu)

Overview of this book

This cookbook offers a range of data analysis samples in simple and straightforward R code, providing step-by-step resources and time-saving methods to help you solve data problems efficiently. The first section deals with how to create R functions to avoid the unnecessary duplication of code. You will learn how to prepare, process, and perform sophisticated ETL for heterogeneous data sources with R packages. An example of data manipulation is provided, illustrating how to use the “dplyr” and “data.table” packages to efficiently process larger data structures. We also focus on “ggplot2” and show you how to create advanced figures for data exploration. In addition, you will learn how to build an interactive report using the “ggvis” package. Later chapters offer insight into time series analysis on financial data, while there is detailed information on the hot topic of machine learning, including data classification, regression, clustering, association rule mining, and dimension reduction. By the end of this book, you will understand how to resolve issues and will be able to comfortably offer solutions to problems encountered while performing data analysis.
Table of Contents (19 chapters)
R for Data Science Cookbook
About the Author
About the Reviewer

Working with twitteR

In addition to obtaining social network interaction data, one can collect millions of tweets from Twitter for further text mining tasks. The method for retrieving data from Twitter is very similar to Facebook. For both social platforms, all we need is an access token to access insight data. After we have retrieved the access token, we can then use twitteR to access millions of tweets.

Getting ready

In this recipe, you need to prepare your environment with R installed and a computer that can access the Internet.

How to do it…

Perform the following steps to read data from Twitter:

  1. First, you need to log in to Twitter and access the page of Twitter Apps at Click on Create New App:

    Figure 26: Creating a new Twitter app

  2. Fill in all required application details to create a new application:

    Figure 27: Filling in the required details

  3. Next, you can select Keys and Access Tokens and then access Application Settings:

    Figure 28: Copying API key and secret

  4. Click on...