Book Image

R Programming By Example

By : Omar Trejo Navarro
Book Image

R Programming By Example

By: Omar Trejo Navarro

Overview of this book

R is a high-level statistical language and is widely used among statisticians and data miners to develop analytical applications. Often, data analysis people with great analytical skills lack solid programming knowledge and are unfamiliar with the correct ways to use R. Based on the version 3.4, this book will help you develop strong fundamentals when working with R by taking you through a series of full representative examples, giving you a holistic view of R. We begin with the basic installation and configuration of the R environment. As you progress through the exercises, you'll become thoroughly acquainted with R's features and its packages. With this book, you will learn about the basic concepts of R programming, work efficiently with graphs, create publication-ready and interactive 3D graphs, and gain a better understanding of the data at hand. The detailed step-by-step instructions will enable you to get a clean set of data, produce good visualizations, and create reports for the results. It also teaches you various methods to perform code profiling and performance enhancement with good programming practices, delegation, and parallelization. By the end of this book, you will know how to efficiently work with data, create quality visualizations and reports, and develop code that is modular, expressive, and maintainable.
Table of Contents (12 chapters)

Simulating Sales Data and Working with Databases

The Food Factory example is about a fictitious company called The Food Factory. They sell custom meals for people looking for healthy food. They allow their customers to choose the macronutrients combinations they want, as well as their protein sources. Macronutrients are the base for any diet, and they are composed of carbohydrates, proteins, and fats. Customers can choose the percentage of each macronutrient, as well as their protein source (fish, chicken, beef, or vegetarian); then, The Food Factory will come up with a tasty meal which fulfills their diet specifications. They have found some great combinations this way, and if they continue to do as well as they have, they will add more meal options, as well as fixed recipes, according to what their customers like most.

The Food Factory has done a good job so far and they have...