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
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Building an advanced interactive marker


The next step in our social map project is to add more details for our Twitter search result. We would like to open up an information panel automatically when the Twitter result comes in. In the process, we will create a subclass of Google Marker and extend it and add a new InfoWindow to enable us to add live HTML data right into our map.

Getting ready

It will be really hard to join in, if you haven't started from the start of this chapter. As this recipe is in continuation of the previous recipe, we will not create a new HTML file or a new JavaScript file but will instead continue from where we left off.

How to do it...

Grab your latest JavaScript file and let's continue to the next steps:

  1. In the function showTweet, replace the new marker with a new TwitterMarker marker.

    function showTweet(obj,latLng){
          if(!obj) obj = {text:'No tweet found in this area for this topic'};
          console.log(obj);	
    
          var marker = new TwitterMarker({
                map...