In this recipe we are going to build a treemap. Treemaps are used to represent the data structure of a tree (nodes that have nodes as children). In this example, we are going to use it more as a rectangular pie chart. Wherever you can use a pie chart, you will be able to use this treemap, but it will give you the ability to use something a bit different.
Open the files in the Treemap folder in the downloadable code files from www.packtpub.com.
Let's start by creating the data structure that is
TreemapData.as:public var color : uint; public var percent : Number; public var label:String; public function TreemapData(newPercent:Number, newColor:uint, newLabel:String) { percent = newPercent; color = newColor; label = newLabel; }From there we can jump to
Treemap.as. We will need to inversely sort the data as our first step. To do so we will create a sorting function and pass it to thesortfunction ofArray. The following is what the sorting...