Book Image

HTML5 Data and Services Cookbook

Book Image

HTML5 Data and Services Cookbook

Overview of this book

HTML5 is everywhere. From PCs to tablets to smartphones and even TVs, the web is the most ubiquitous application platform and information medium bar. Its becoming a first class citizen in established operating systems such as Microsoft Windows 8 as well as the primary platform of new operating systems such as Google Chrome OS. "HTML5 Data and Services Cookbook" contains over 100 recipes explaining how to utilize modern features and techniques when building websites or web applications. This book will help you to explore the full power of HTML5 - from number rounding to advanced graphics to real-time data binding. "HTML5 Data and Services Cookbook" starts with the display of text and related data. Then you will be guided through graphs and animated visualizations followed by input and input controls. Data serialization, validation and communication with the server as well as modern frameworks with advanced features like automatic data binding and server communication will also be covered in detail.This book covers a fast track into new libraries and features that are part of HTML5!
Table of Contents (21 chapters)
HTML5 Data and Services Cookbook
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Displaying combined charts


Combined charts are charts that have more than one x or y axis, and may have multiple types of series (lines, bars, and areas). Sometimes, we may want to present multiple heterogeneous types of data on a single chart, usually to visualize its correlation.

In this recipe, we're going to try and visualize a mountain hike by presenting both temperature and altitude on a single chart. The altitude series will be an area chart with gradient colors reminiscent of relief maps, but the temperature series will be a line chart, which we would like to be red if above 19 degrees Celsius and blue if below that.

In order to do this, we're going to need a charting library that can handle two y axes. We're going to use the Flot charting library because it is capable of displaying charts with two or more x or y axes.

Getting ready

Like in the previous recipes, we need to download Flot from the official website at http://www.flotcharts.org/ and extract the contents to a separate folder...