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
About the Author
About the Reviewer
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Asynchronous data loading using queue

In this recipe, we will demonstrate another very useful technique commonly used to process or generate data in large data visualization projects. It is usually necessary in complex visualization project to load and merge multiple datasets from different sources before proceeding to visualizing. The challenge in this kind of asynchronous loading is the difficulty in waiting to know when all datasets have been successfully loaded since only then the visualization can begin. D3 provides a very convenient queue interface to help organize these types of asynchronous tasks and helps you coordinate among them, which is the focus of this recipe.

Getting ready

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

How to do it...

In the code example of the queue.html file, we will simulate loading and merging multiple data points using the setTimeout function. The setTimeout...