
Exploring Everyday Things with R and Ruby
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Content
- Intro
- Copyright
- Table of Contents
- Preface
- Explorers Ahoy!
- Data, Data, Everywhere
- Bringing the World to Us
- Packing Your Bags
- Conventions Used in This Book
- Using Code Examples
- Safari® Books Online
- How to Contact Us
- Acknowledgments
- The Hat and the Whip
- Ruby
- Why Ruby
- Installing Ruby
- Running Ruby
- Requiring External Libraries
- Basic Ruby
- Everything Is an Object
- Shoes
- What Is Shoes?
- A Rainbow of Shoes
- Installing Shoes
- Programming Shoes
- Wrap-up
- Into the Matrix
- Introducing R
- Using R
- The R Console
- Sourcing Files and the Command Line
- Packages
- Programming R
- Variables and Functions
- Conditionals and Loops
- Data Structures
- Importing Data
- Charting
- Basic Graphs
- Introducing ggplot2
- Wrap-up
- Offices and Restrooms
- The Simple Scenario
- Representing Restrooms and Such
- The First Simulation
- Interpreting the Data
- The Second Simulation
- The Third Simulation
- The Final Simulation
- Wrap-up
- How to Be an Armchair Economist
- The Invisible Hand
- A Simple Market Economy
- The Producer
- The Consumer
- Some Convenience Methods
- The Simulation
- Analyzing the Simulation
- Resource Allocation by Price
- The Producer
- The Consumer
- Market
- The Simulation
- Analyzing the Second Simulation
- Price Controls
- Wrap-up
- Discover Yourself Through Email
- The Idea
- Grab and Parse
- The Emailing Habits of Enron Executives
- Discover Yourself
- Number of Messages by Day of the Month
- MailMiner
- Number of Messages by Day of Week
- Number of Messages by Month
- Number of Messages by Hour of the Day
- Interactions
- Comparative Interactions
- Text Mining
- Wrap-up
- In a Heartbeat
- My Beating Heart
- Auscultation
- Homemade Digital Stethoscope
- Extracting Data from Sound
- Generating the Heart Sounds Waveform
- Finding the Heart Rate
- Oximetry
- Homemade Pulse Oximeter
- Extracting Data from Video
- Generating the Heartbeat Waveform and Calculating the Heart Rate
- Wrap-up
- Schooling Fish and Flocking Birds
- The Origin of Boids
- Simulation
- Roids
- The Boid Flocking Rules
- Supporting Rules
- A Variation on the Rules
- Going Round and Round
- Putting in Obstacles
- Wrap-up
- Money, Sex, and Evolution
- It's a Good Life
- Money
- Sex
- Birth and Death
- The Changes
- Evolution
- What We Will Be Changing
- Implementation
- Wrap-up
- Index
- About the Author
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