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Overview

The Windows.Forms TreeMap control provides a simple and effective way to visualize flat or hierarchical data as clustered rectangles with a specific, weighted attribute determining the size of each rectangle. This control has highly customizable features such as the ability to display hierarchical and flat-level data, legends, different layouts, and color mapping.


Tree map levels

The levels of Windows.Forms TreeMap can be categorized into two types to visualize data: TreeMapFlatLevel and TreeMapHierarchicalLevel.

Windows.Forms TreeMap shows flat data example.

Flat levels

Visualize the levels for a flat data collection. The items source set to the tree map must be a flat data collection.

Windows.Forms TreeMap shows hierarchical data example.

Hierarchical levels

Visualize the levels for a hierarchical data collection that contains tree-structured data. The items source set to the tree map must be a hierarchical data collection.


Leaf nodes

The Windows.Forms TreeMap contains groups of data collections and each group has one or more leaf nodes. Each leaf node is displayed as a rectangle, sized, and colored according to values assigned.

Windows.Forms TreeMap shows customized leaf node border.

Border customization

Customize the leaf node borders to enhance readability.

Windows.Forms TreeMap shows customized gap for leaf node.

Gap customization

Customize gaps within the group of leaf nodes to enhance readability.

Windows.Forms TreeMap custom view support for nodes.

Custom view

The Windows.Forms TreeMap control provides template support for tree map nodes, which allow any type of custom template to be created with any type of view element.


Color mapping

Color mapping supports categorizing the nodes by customizing their colors based on the underlying values.

Colors applied in Windows.Forms TreeMap by range color mapping support.

Range color mapping

Apply colors to nodes by comparing their values with a desired numeric range. For example, apply colors to countries based on their population growth.

Colors applied in Windows.Forms TreeMap by desaturation color mapping support.

Desaturation color mapping

Apply colors to nodes by comparing their values with desaturation color order. For example, apply transparent color to the countries based on their population variation from higher to lower.

Colors applied in Windows.Forms TreeMap by single color.

Uni-color mapping

Apply a single color to the all the nodes.

Colors applied in Windows.Forms TreeMap by palette color mapping support.

Palette color mapping

Colors each node with the color specified in palette color mapping.


Layouts

The Windows.Forms TreeMap provides different types of layout options to view child nodes in effective ways.

Windows.Forms TreeMap shows layout using squarified algorithm.

Squarified

In this layout, the data is visualized in the form of square-like rectangles with the best aspect ratio.

 Windows.Forms TreeMap shows layout using SliceAndDiceAuto algorithm.

SliceAndDiceAuto

The data is visualized in this layout in the form of long, thin rectangles, which can be displayed either vertically or horizontally with high aspect ratio.

 Windows.Forms TreeMap shows layout using SliceAndDiceHorizontal algorithm.

SliceAndDiceHorizontal

This layout creates rectangles with high aspect ratio and displays them horizontally.

 Windows.Forms TreeMap shows layout using SliceAndSizeVertical algorithm.

SliceAndSizeVertical

This layout creates rectangles with high aspect ratio and displays them vertically.


Legend

A legend is used to add additional information for interpreting a tree map with various colors, shapes, or other identifiers.

Windows.Forms TreeMap shows different type of legend icon.

Icon types

Change the type of legend icon to built-in shapes such as circles, rectangles, or custom shapes.

Windows.Forms TreeMap shows customized legend icons.

Icon customization

Change or move the position of a legend to any place inside a tree map.


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