Book Image

HTML5 Graphing and Data Visualization Cookbook

By : Ben Fhala
Book Image

HTML5 Graphing and Data Visualization Cookbook

By: Ben Fhala

Overview of this book

The HTML5 canvas tag makes creating any plot shape easy, all you have to do then is fill it with exciting visualizations written in JavaScript or using other visualization tools. "HTML5 Graphing and Data Visualization Cookbook" is the perfect break into the world of Canvas, charts, and graphs in HTML5 and JavaScript. In this book we will go through a journey of getting to know the technology by creating and planning data-driven visualizations. This cookbook is organized in a linear, progressive way so it can be read from start to finish, as well as be used as a resource for specific tasks.This book travels through the steps involved in creating a fully interactive and animated visualization in HTML5 and JavaScript. You will start from very simple "hello world"ù samples and quickly dive deeper into the world of graphs and charts in HTML5. Followed by learning how canvas works and carrying out a group of tasks geared at taking what we learned and implementing it in a variety of chart types. With each chapter the content becomes more complex and our creations become more engaging and interactive.Our goal is that by the end of this book you will have a strong foundation; knowing when to create a chart on your own from scratch and when it would be a good idea to depend on other APIs.We finish our book in our last two chapters exploring Google maps and integrating everything we learnt into a full project.
Table of Contents (17 chapters)
HTML5 Graphing and Data Visualization Cookbook
About the Author
About the Reviewer

Structuring a tree chart

There are many types of trees in the virtual world, although the most intuitive one is a family tree. A family tree is a bit more complex than a basic data tree such as a class inheritance tree, as for the most part classes have only one parent while family trees usually have two.

We will build an inheritance tree for the display objects of ActionScript 3.0.

Getting ready

Please note that this sample is cutting edge in HTML5. One of the new features that no one really knows whether will get adopted or not is E4X. It's been embraced by Firefox, but not all browsers have implemented it (it is fully supported in Flash as well).

ECMAScript for XML (E4X) is a programming language extension that adds native XML support to ECMAScript. It has replaced the DOM interface and is implemented as a primitive (such as numbers and Booleans), making it faster and more optimized.

As we are mainly working locally, we are going to save our XML document directly in our JavaScript to avoid...