Visual Storytelling with D3: An Introduction to Data Visualization in JavaScript

Visual Storytelling with D3: An Introduction to Data Visualization in JavaScript

By: Ritchie S. King (author)Paperback

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Description

Master D3, Today's Most Powerful Tool for Visualizing Data on the Web Data-driven graphics are everywhere these days, from websites and mobile apps to interactive journalism and high-end presentations. Using D3, you can create graphics that are visually stunning and powerfully effective. Visual Storytelling with D3 is a hands-on, full-color tutorial that teaches you to design charts and data visualizations to tell your story quickly and intuitively, and that shows you how to wield the powerful D3 JavaScript library. Drawing on his extensive experience as a professional graphic artist, writer, and programmer, Ritchie S. King walks you through a complete sample project-from conception through data selection and design. Step by step, you'll build your skills, mastering increasingly sophisticated graphical forms and techniques. If you know a little HTML and CSS, you have all the technical background you'll need to master D3. This tutorial is for web designers creating graphics-driven sites, services, tools, or dashboards; online journalists who want to visualize their content; researchers seeking to communicate their results more intuitively; marketers aiming to deepen their connections with customers; and for any data visualization enthusiast. Coverage includes Identifying a data-driven story and telling it visually Creating and manipulating beautiful graphical elements with SVG Shaping web pages with D3 Structuring data so D3 can easily visualize it Using D3's data joins to connect your data to the graphical elements on a web page Sizing and scaling charts, and adding axes to them Loading and filtering data from external standalone datasets Animating your charts with D3's transitions Adding interactivity to visualizations, including a play button that cycles through different views of your data Finding D3 resources and getting involved in the thriving online D3 community About the Website All of this book's examples are available at ritchiesking.com/book, along with video tutorials, updates, supporting material, and even more examples, as they become available.

About Author

Ritchie S. King is a reporter and visual journalist at FiveThirtyEight.com, focusing on data visualization and interactive features. He previously held a similar role at Quartz. In a previous life, he was a chemical engineer at a start-up trying to turn wood chips and switchgrass into fuel. Though he left engineering to become a journalist, he's still into math and likes to muck with data. His written stories and graphics have appeared in the New York Times, Bloomberg Businessweek, Popular Science, and IEEE Spectrum.

Contents

Foreword xi Preface xiii Acknowledgments xvii About the Author xix Chapter 1: Visual Storytelling and D3 1 Visualization, Visualized 1 Charts Give Data a Form-That Form Tells a Story 2 Quality: It Is All about Content 5 Design: It Is All about Form 6 Visual Storytelling 7 Enter D3 7 Things You Designers Will Love about D3 8 Things You Coders Will Love about D3 8 Things for Which You Should Not Use D3 9 Notes on Using D3 9 Tools You Will Need 10 Summary 10 Chapter 2: Finding a Data-Driven Story and Telling It Visually 11 Getting Started 11 Is the World Getting Older? 12 Finding and Inspecting Data 13 Honing the Concept 15 Choosing a Form 17 The Example We Will Build in This Book 27 Summary 29 Chapter 3: Scalable Vector Graphics 31 Peeking under the Hood 31 What Is SVG, Exactly? 31 Playing with Circles in SVG 32 Inspecting SVG in the Web Inspector 34 Styling SVG Elements with CSS 35 Other Shapes 37 SVG Text 41 SVG Style Properties 44 Drawing Order and Groups 47 Transformations 49 Building a Bar Chart in SVG 51 Summary 64 Chapter 4: Shaping Web Pages with D3 Selections 65 Getting Set Up with D3 65 Making Selections 66 Changing a Selection's Attributes 70 D3 Strives to be Declarative 74 Chaining Methods 74 Appending New Elements 77 Putting It All Together 79 Selecting Multiple Elements with d3.selectAll() 80 Building a Bar Chart with Selections 81 Summary 103 Chapter 5: Data-Joins: Enter 105 What Are Data-Joins? 105 A Conceptual Overview of Data-Joins: Enter 106 Enter and Binding Data 107 Using a Data-Join to Make a Bar Chart 111 Using Anonymous Functions to Access Bound Data 115 Finishing the Rest of the Chart 119 Storing Data in Objects 120 Summary 125 Chapter 6: Sizing Charts and Adding Axes 127 Linear Scales 127 Using Smart Margin Conventions 132 Adding Axes 135 Ordinal Scales and Axes 144 Summary 156 Chapter 7: Loading and Filtering External Data 157 Building a Graphic that Uses All of the Population Distribution Data 157 Data Formats You Can Use with D3 158 Creating a Server to Upload Your Data 159 D3's Functions for Loading Data 160 Dealing with Asynchronous Requests 165 Loading and Filtering a Large(r) Data Set 171 Putting It All Together 173 Summary 175 Chapter 8: Making Charts Interactive and Animated 177 Data-Joins: Update and Exit 177 Interactive Buttons 181 Updating Charts 190 Adding Transitions 193 Using Keys 196 Summary 197 Chapter 9: Adding a Play Button 199 Wrapping the Update Phase in a Function 199 Adding a Play Button to the Page 203 Making the Play Button Go 204 Allowing the User to Interrupt the Play Sequence 207 Summary 213 Chapter 10: Striking Out on Your Own 215 This Book is a Foundation for Learning D3 215 How to Get Unstuck 215 Always Be Coding 217 Summary 218 Appendix A: JavaScript for Beginners 219 JavaScript in Brief 219 Your Browser's JavaScript Console 219 Basic Math, Variables, and Data Types 220 Writing JavaScript in Markup and .js Files 223 Arrays and Objects 224 Methods and Functions 227 If Statements and for Loops 228 Debugging 232 Appendix B: Cleaning the Population Distribution Data 235 Index 255

Product Details

  • ISBN13: 9780321933171
  • Format: Paperback
  • Number Of Pages: 288
  • ID: 9780321933171
  • weight: 470
  • ISBN10: 0321933176

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