Book Image

Learning R Programming

By : Kun Ren
Book Image

Learning R Programming

By: Kun Ren

Overview of this book

R is a high-level functional language and one of the must-know tools for data science and statistics. Powerful but complex, R can be challenging for beginners and those unfamiliar with its unique behaviors. Learning R Programming is the solution - an easy and practical way to learn R and develop a broad and consistent understanding of the language. Through hands-on examples you'll discover powerful R tools, and R best practices that will give you a deeper understanding of working with data. You'll get to grips with R's data structures and data processing techniques, as well as the most popular R packages to boost your productivity from the offset. Start with the basics of R, then dive deep into the programming techniques and paradigms to make your R code excel. Advance quickly to a deeper understanding of R's behavior as you learn common tasks including data analysis, databases, web scraping, high performance computing, and writing documents. By the end of the book, you'll be a confident R programmer adept at solving problems with the right techniques.
Table of Contents (21 chapters)
Learning R Programming
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface

Looking inside web pages


Web pages are made to present information. The following screenshot shows a simple web page located at data/simple-page.html that has a heading and a paragraph:

All modern web browsers support such web pages. If you open data/simple-page.html with any text editor, it will show the code behind the web page as follows:

<!DOCTYPE html> 
<html> 
<head> 
  <title>Simple page</title> 
</head> 
<body> 
  <h1>Heading 1</h1> 
  <p>This is a paragraph.</p> 
</body> 
</html> 

The preceding code is an example of HTML (Hyper Text Markup Language). It is the most widely used language on the Internet. Different from any programming language to be finally translated into computer instructions, HTML describes the layout and content of a web page, and web browsers are designed to render the code into a web page according to web standards.

Modern web browsers...