R Object-oriented Programming by Black, Kelly -- Read -- Imperial Library of Trantor

Index

R Object-oriented Programming

Table of Contents R Object-oriented Programming Credits About the Author About the Reviewers www.PacktPub.com

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Preface

What this book covers What you need for this book Who this book is for Conventions Reader feedback Customer support

Downloading the example code Errata Copyright violations Questions

1. Data Types

Assignment The workspace Discrete data types

Integer Logical

Character Factors

Continuous data types

Double Complex

Special data types

Notes on the as and is functions

Summary

2. Organizing Data

Basic data structures

Vectors Lists Data frames Tables Matrices and arrays Censoring data Appending rows and columns

Operations on data structures

The apply commands

apply lapply and sapply tapply mapply

Summary

3. Saving Data and Printing Results

File and directory information Entering data

Entering data from the command line Reading tables from files CSV files Fixed-width files

Printing results and saving data

Saving a workspace The cat command The print, format, and paste commands

Primitive input/output Network options

Opening a socket Basic socket operations

Summary

4. Calculating Probabilities and Random Numbers

Overview

Distribution functions Cumulative distribution functions Inverse cumulative distribution functions Generating pseudorandom numbers Sampling Summary

5. Character and String Operations

Basic string operations Six focused tasks

Determining the length of a string Location of a substring Extracting or changing a substring Transforming the case Splitting strings Creating formatted strings

Regular expressions Summary

6. Converting and Defining Time Variables

Introduction and assumptions Converting strings to time data types

Converting time data types to strings Operations on time data types

Summary

7. Basic Programming

Conditional execution

Loop constructs

The for loop The while loop The repeat loop Break and next statements

Functions

Defining a function Arguments to functions Scope

Executing scripts

Summary

8. S3 Classes

Defining classes and methods Defining objects and inheritance Encapsulation A final note Summary

9. S4 Classes

Introducing the Ant class Defining an S4 class Defining methods for an S4 class

Defining new methods Polymorphism Extending the existing methods

Inheritance Miscellaneous notes Summary

10. Case Study – Course Grades

Overview The Course class

The definition of the Course class Reading grades from a file

The assignment classes

The NumericGrade class The LetterGrade class Example – reading grades from a file

Defining indexing operations Redefining existing functions Redefining arithmetic operations Summary

11. Case Study – Simulation

The simulation classes The Monte-Carlo class Examples Summary

A. Package Management Index

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