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

Striking a chord

The chord layout creates a circular diagram showing relations in a dataset. We will use yet another dataset here, found in the data/ directory stormofswords.csv, from the Network of Thrones dataset available at

This dataset was created by looking at the proximity of character names in the text of the book series in order to find the weight of each character's connection to the other characters. It is an ideal dataset for the next two examples, which look at arbitrary nonhierarchical connections between data.

Start by doing the comment out the last example and add this dance in main.js:

westerosChart.init('chord', 'data/stormofswords.csv');

Go back to chapter7/index and scaffold out the new chart method:

westerosChart.chord = function Chord(_data) {};

Nothing new. We will create an array of sources and links between them, assuming the strength of the connection is greater than 20. Add this to the Chord function:

  const minimumWeight...