Book Image

ActionScript Graphing Cookbook

Book Image

ActionScript Graphing Cookbook

Overview of this book

"A picture is worth a thousand words" has never been more true than when representing large sets of data. Bar charts, heat maps, cartograms, and many more have become important tools in applications and presentations to quickly give insight into complicated issues.The "ActionScript Graphing Cookbook" shows you how to add your own charts to any ActionScript program. The recipes give step-by-step instructions on how to process the input data, how to create various types of charts and how to make them interactive for even more user engagement.Starting with basic ActionScript knowledge, you will learn how to develop many different types of charts.First learn how to import your data, from Excel, web services and more. Next process the data and make it ready for graphical display. Pick one of the many graph options available as the book guides you through ActionScript's drawing functions. And when you're ready for it, branch out into 3D display.The recipes in the "ActionScript Graphing Cookbook" will gradually introduce you into the world of visualization.
Table of Contents (17 chapters)
ActionScript Graphing Cookbook
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Loading data with XML


In this recipe, we'll rewrite the embedded recipe so it can read XML files. ActionScript 3.0 has very thorough support for the XML format, so you may notice that this recipe is the easiest one of the entire chapter.

Because so much data, these days, is transmitted in XML or variants such as RSS, it may also prove to be the most useful.

Getting ready

Create a Recipe4 document class and have it extend Sprite. Set up the Graph class as in the previous recipes:

package
{
    import flash.display.Sprite;
    public class Recipe4 extends Sprite
    {
        private var graph:Graph;

        public function Recipe4() 
        {
           graph = new Graph( -50, 550, 750, -50);
           addChild(graph);
           graph.drawHorizontalAxis(0, 0, 700, 50, ["0", "700"]);
           graph.drawVerticalAxis(0, 0, 500, 50, ["0", "250", "500"]);

        }

    }

}

How to do it...

  1. Embed the XML file and associate a class with it. If you use FlashDevelop's Generate Embed Code option...