Book Image

Data Visualization with D3 4.x Cookbook - Second Edition

By : Nick Zhu
Book Image

Data Visualization with D3 4.x Cookbook - Second Edition

By: Nick Zhu

Overview of this book

Master D3.js and create amazing visualizations with the Data Visualization with D3 4.x Cookbook. Written by professional data engineer Nick Zhu, this D3.js cookbook features over 65 recipes. ? Solve real-world visualization problems using D3.js practical recipes ? Understand D3 fundamentals ? Includes illustrations, ready-to-go code samples and pre-built chart recipes
Table of Contents (21 chapters)
Data Visualization with D3 4.x Cookbook - Second Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Binding object literals as data


With a more complex visualization, each element we have in a data array might not be a primitive integer value or a string, but a JavaScript object itself. In this recipe, we will discuss how this more complex data structure can be leveraged to drive your visualization using D3.

Getting ready

Open your local copy of the following file in your web browser:

https://github.com/NickQiZhu/d3-cookbook-v2/blob/master/src/chapter3/object-as-data.html .

How to do it...

JavaScript object literal is probably the most common data structure you will encounter when you load data sources on the Web. In this recipe, we will take a look at how these JavaScript objects can be leveraged to generate rich visualization. The following code illustrates how to do it:

var data = [ // <- A 
        {width: 10, color: 23},{width: 15, color: 33}, 
        {width: 30, color: 40},{width: 50, color: 60}, 
        {width: 80, color: 22},{width: 65, color: 10}, 
       ...