Exploring Everyday Things with R and Ruby
Learning About Everyday Things
1st Edition
Published on 27. June 2012
252 pages
978-1-4493-4222-7 (ISBN)
Description
If youre curious about how things work, this fun and intriguing guide will help you find real answers to everyday problems. By using fundamental math and doing simple programming with the Ruby and R languages, youll learn how to model a problem and work toward a solution.All you need is a basic understanding of programming. After a quick introduction to Ruby and R, youll explore a wide range of questions by learning how to assemble, process, simulate, and analyze the available data. Youll learn to see everyday things in a different perspective through simple programs and common sense logic. Once you finish this book, you can begin your own journey of exploration and discovery.Here are some of the questions youll explore:Determine how many restroom stalls can accommodate an office with 70 employeesMine your email to understand your particular emailing habitsUse simple audio and video recording devices to calculate your heart rateCreate an artificial societyand analyze its behavioral patterns to learn how specific factors affect our real society
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08/2012
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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
