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

Creating a bar chart


A bar chart is a visualization that uses either horizontal (row charts) or vertical (column charts) rectangular bars with length proportional to the values that they represent. In this recipe, we will implement a column chart using D3. A column chart is capable of visually representing two variables at the same time with its y axis; in other words, the bar height and its x axis. The x axis values can be either discrete or continuous (for example, a histogram). In our example, we choose to visualize continuous values on the x axis. However, the same technique can be applied when you work with discrete values.

Getting ready

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

https://github.com/NickQiZhu/d3-cookbook-v2/blob/master/src/chapter8/bar-chart.html

How to do it...

The following code example shows the important implementation aspects of a histogram, omitting the accessors and peripheral graphic implementation details:

... 
 
var _chart = {};...