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Exploring Data with R
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Explore data like a pro using R! R is a powerful, open source programming language built specifically for data analysis. It includes a huge array of standard functions for common data science tasks, along with an incredible ecosystem of free tools and packages for organizing, interpreting, and presenting your data. Exploring Data with R is an easy to use book that teaches you how to explore business and research data using R without unnecessarily complicated programming or specialized mathematics. Filled with clear explanations of key data analysis tasks, reusable code snippets, and hands-on exercises, it’s the perfect way to upgrade your data wrangling skills with R!An excellent and imminently workable introduction to R that rivals the best books out there.
Table of Contents takes you straight to the bookdetailed table of contents
Part 1: First Steps
1 Starting with R
1.1 Understanding the RStudio Desktop Environment
1.2 Using R Markdown for Reproducible Reporting
1.3 Our Learning Path
1.4 Where to go for Help
1.5 Summary
2 Introductory Data Transformation with dplyr
2.1 Programming Basics and Package Installation
2.1.1 The Basics of Assignment
2.1.2 Installing and Loading Packages in R
2.2 Using dplyr to Transform Data
2.2.1 The Main dplyr Functions
2.2.2 The sw Dataset and the Elements of a Table
2.2.3 filter: Picking Observations by their Values
2.2.4 arrange: Reordering Rows
2.2.5 select: Picking Variables by their Names
2.2.6 mutate: Creating New Variables with Expressions
2.2.7 summarize: Collapsing Many Values Down to a Single Summary
2.2.8 Bringing All of This Together with the Pipe (&>&)
2.3 Creating Our Own Tabular Data
2.3.1 Creating Tibbles with the tibble() Function
2.3.2 Creating Tibbles a Different Way with the tribble() Function
2.4 Exercises
2.5 Answers to Exercises
2.6 Summary
3 Introductory Data Visualization with ggplot
3.1 Using ggplot to Create Plots
3.1.1 Making Simple ggplot Scatterplots
3.1.2 Facets and the act of faceting in ggplot
3.1.3 Working with labels and titles
3.1.4 Modifying the location of legends
3.1.5 Modifying your dataset, plotting… and modifying again.
3.2 Exercises
3.3 Answers to Exercises
3.4 Summary
Part 2: The Core
4 Tidying data for analysis
4.1 What Is Tidy Data?
4.2 Using tidyr to Tidy Our Tables
4.2.1 Identifying Untidiness and Proposing Some Solutions to Tidy Up
4.2.2 Addressing Untidyness by Using the pivot_longer() Function
4.2.3 Using the separate() Function to Split a Column into Several
4.2.4 Inspecting Our Tidied Data by Plotting with ggplot
4.2.5 Replacing Missing Values with Actual NAs
4.3 Exercises
4.4 Answers to Exercises
4.5 Summary
5 Importing Data from Common Formats
5.1 Managing Projects and Files
5.1.1 Creating an RStudio Project to Better Manage our Working Files
5.1.2 Writing a sample CSV file to the project directory
5.2 Using readr to Import Data from CSV Files
5.2.1 Reading in our sample CSV file with the read_csv() function
5.2.2 Additional read_csv() options for non-standard CSVs
5.3 Using readxl to import Excel data
5.3.1 Writing an example Excel file to the project directory
5.3.2 Reading in our sample Excel file with the read_excel() function
5.4 Exercises
5.5 Answers to Exercises
5.6 Summary
6 Transformations Involving Dates and Times
6.1 Dates, Date-Times, and ISO 8601
6.2 Using lubridate to Parse Date and Date-Time Strings
6.2.1 Parsing Dates and Getting R Date Values
6.2.2 Parsing Date-Times and Getting POSIXct Values
6.3 Transforming Dates and Times in Tabular Data
6.3.1 Creating a Reasonable Time Series Plot with ggplot
6.3.2 Further Transforming the Time Series Data to Make a New Plot
6.4 Summary
7 A Closer Look at R Programming
8 String Transformations
9 R Lists and Factors
Part 3: Digging Deeper
10 Revisiting Plotting with ggplot
11 Making it Look Good
12 Revisiting Data Transformation with dplyr
13 Creating an R Package
About the Technology
R is a data analysis platform designed to make statistical computing more practical and accessible. The R language and its extensive ecosystem includes a massive toolbox of libraries and packages for almost any challenge you’ll need to crack! While it’s powerful enough to do complex, large-scale data science projects, you can get excellent results with minimal programming through experience you already have from working with tools like Excel. R scripts are easy to reuse by yourself and others, and nearly every component of R is free and open source.About the book
In Exploring Data with R, veteran data enthusiast Richard Iannone teaches you to explore the most common types of data using the powerful combination of R and the RStudio IDE. Focusing on the skills you’ll need for data analysis, you’ll start by using the RStudio environment to write your first R scripts. From there, you’ll learn how to load and use R Tidyverse packages such as dplyr, ggplot, and tidyr to transform and clean up messy data, create beautiful charts, generate reports, and develop components you can reuse in later projects. You’ll even get to grips with some advanced topics such as automation of reporting, data validation, and creating your own R packages! Filled with fun exercises to test your knowledge and hands-on projects to work through each chapter, this book is the perfect place to start your journey into data science!What's inside
- Navigating the RStudio interface like a pro
- Loading and using R Tidyverse packages to do useful data analysis work
- Communicating and visualizing data using R Markdown and presentation software
- Full examples using custom datasets and functions
- Reference materials you can use again and again
- Recommendations on where to go next
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