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

Bonus chart! Sunburst radial partition joy!

Oh, you thought we were done? Let's squeeze one more chart out of d3-hierarchy before moving on.

If you remember, the partition chart was a bit funky, largely because it's mainly used in datasets where only the leaf nodes (that is, the outermost nodes without children) have a value. Since some of the parents in our dataset have screentime values, this sort of distorts it and makes it look odd. We will re-render that, but make it all cool and circular this time.

You know the drill. main.js:

westerosChart.init('radialPartition', 'data/GoT-lineages-screentimes.json');

In chapter6/index.js:

westerosChart.radialPartition = function RadialPartition(_data) { 
  const data = getMajorHouses(_data)
     .map((d, i, a) => Object.assign(d, {
       screentime: a.filter(v =>
         v.fatherLabel === d.itemLabel).length ? 0 : d.screentime,
     })   ); 
  const radius = Math.min(this.innerWidth, this.innerHeight) / 2; 

We start by creating a radius that...