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

Dragging data points to new values


In this chapter, we'll use a few ideas from the previous recipes to make that actual graph data draggable. When the recipe is implemented, the user can click-and-drag data points to new locations.

Getting ready

We will start from the familiar point graph:

package com.graphing.drag
{
    import flash.display.Sprite;
    import com.graphing.PointGraph;

    public class Recipe6 extends Sprite
    {
        private var _graph:PointGraph;
        private var _data:Array = [[0,20],[50,70],[100,0],[150,150],[200,300],[250,200],[300,400],[350,20],[400,60],[450,250],[500,90],[550,400],[600,500],[650,450],[700,320]];

        public function Recipe6() 
        {
            _graph = new PointGraph();
            _graph.data = _data;
            _graph.graphWidth = 800;
            _graph.graphHeight = 600;
            _graph.graphLeft = -50;
            _graph.graphRight = 750;
            _graph.graphTop = 550;
            _graph.graphBottom = -50;
            _graph...