Layout Strategies

By the end of this help topic, you will learn about the Layout Strategies which are responsible for data tiling in the RadTreeMap control. Treemap algorithms represent hierarchical data sets via recursive subdivision of the initial rectangle. The area of each rectangle in the treemap is proportional to the size of that particular node.

Layout Strategies are always applied to child nodes.

Currently there are two Layout Strategies to visualize the data:

Squarified

It creates rectangles with best aspect ratio:

• C#
• VB.NET

SquarifiedAlgorithm squarifiedAlgorithm = new SquarifiedAlgorithm(); 
this.radTreeMap1.Algorithm = squarifiedAlgorithm;

Dim squarifiedAlgorithm As SquarifiedAlgorithm = New SquarifiedAlgorithm()
Me.radTreeMap1.Algorithm = squarifiedAlgorithm

The default layout is Squarified.

Slice and Dice

It creates rectangles with high aspect ratio and displays them sorted either horizontally or vertically:

For the Slice and Dice algorithm you can specify Orientation (Horizontal, Vertical or Smart) and SortDirection (Ascending or Descending):

• C#
• VB.NET

SliceDiceAlgorithm sliceDiceAlgorithm = new SliceDiceAlgorithm();
sliceDiceAlgorithm.Orientation = SliceDiceOrientation.Horizontal;
sliceDiceAlgorithm.SortDirection = ListSortDirection.Descending;
this.radTreeMap1.Algorithm = sliceDiceAlgorithm;      

Dim sliceDiceAlgorithm As SliceDiceAlgorithm = New SliceDiceAlgorithm()
sliceDiceAlgorithm.Orientation = SliceDiceOrientation.Horizontal
sliceDiceAlgorithm.SortDirection = System.ComponentModel.ListSortDirection.Descending
Me.radTreeMap1.Algorithm = sliceDiceAlgorithm

Setting the Orientation to Smart means that the algorithm will automatically choose the most appropriate orientation depending on your data and the available space.

• C#
• VB.NET

SliceDiceAlgorithm sliceDiceAlgorithmSmart = new SliceDiceAlgorithm();
sliceDiceAlgorithmSmart.Orientation = SliceDiceOrientation.Smart;
this.radTreeMap1.Algorithm = sliceDiceAlgorithmSmart;          

Dim sliceDiceAlgorithmSmart As SliceDiceAlgorithm = New SliceDiceAlgorithm()
sliceDiceAlgorithmSmart.Orientation = SliceDiceOrientation.Smart
Me.radTreeMap1.Algorithm = sliceDiceAlgorithmSmart

Vertical Slice and Dice