Book Image

D3.js 4.x Data Visualization - Third Edition

By : Aendrew Rininsland, Swizec Teller
Book Image

D3.js 4.x Data Visualization - Third Edition

By: Aendrew Rininsland, Swizec Teller

Overview of this book

Want to get started with impressive interactive visualizations and implement them in your daily tasks? This book offers the perfect solution-D3.js. It has emerged as the most popular tool for data visualization. This book will teach you how to implement the features of the latest version of D3 while writing JavaScript using the newest tools and technique You will start by setting up the D3 environment and making your first basic bar chart. You will then build stunning SVG and Canvas-based data visualizations while writing testable, extensible code,as accurate and informative as it is visually stimulating. Step-by-step examples walk you through creating, integrating, and debugging different types of visualization and will have you building basic visualizations (such as bar, line, and scatter graphs) in no time. By the end of this book, you will have mastered the techniques necessary to successfully visualize data and will be ready to use D3 to transform any data into an engaging and sophisticated visualization.
Table of Contents (18 chapters)
Title Page
About the Authors
About the Author2
About the Reviewer
Customer Feedback
Shape Primitives of D3

Chapter 4. Making Data Useful

When creating visualizations for the Web, chances are that the format your data comes in will not be the final format you use with D3. We will take a look at making our datasets useful with both D3 and regular JavaScript.

We start with a quick dip into functional programming to bring everyone up to speed. A lot of this will be self-evident if you use Haskell, Scala, or Lisp, or write JavaScript in a functional style. Functional programming is a hot topic in JavaScript development right now, for good reason -- it makes your code easier to read, encourages good practices, such as not mutating variables, and leverages one of JavaScript's best features as a language --  the use of first-class functions. We'll take a look at what that means in a short while.

We will continue with loading external data in a variety of different ways, take a closer look at scales, and finish with some temporal and geographic data.