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Overview

The tree map 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 displaying hierarchical and flat-level data, legends, different layouts, and color mapping.

Overview


Tree map level

The levels of tree map can be categorized into two types to visualize data: TreeMapFlatLevel and TreeMapHierarchicalLevel.

Flat level

Flat level

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

Hierarchical level

Hierarchical level

Hierarchical level visualizes the levels for a hierarchical data collection, which contains tree-structured data. The items source set to tree map must be a hierarchical data collection.


Leaf node

The tree map contains groups of data collections; each group has one or more leaf nodes. Each leaf node is displayed as a rectangle, sized, and colored according to values that you assign.

Border customization

Border customization

Leaf node borders can be customized to enhance readability.

Gap customization

Gap customization

Gaps between the groups of leaf nodes can be customized to enhance readability.

Custom view

Custom view

The tree map 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

With color mapping, you can categorize nodes by customizing their colors based on the underlying value.

Range color mapping

Range color mapping

Colors can be applied to nodes by comparing their values with a desired numeric range. For example, colors can be applied to countries based on their population growth.

Desaturation color mapping

Desaturation color mapping

Colors can be applied to nodes by comparing their values with a desaturation color order. For example, transparent color can be applied to countries based on their population variation.

Uni-color mapping

Unicolor mapping

A single color can be applied to entire nodes.

Palette color mapping

Palette color mapping

Each node can be colored with a specified color in palate color mapping.


Layouts

Tree map provides different types of layout options to view the child nodes in effective ways.

Squarified

Squarified

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

SliceAndDiceAuto

SliceAndDiceAuto

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

SliceAndDiceHorizontal

SliceAndDiceHorizontal

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

SliceAndSizeVertical

SliceAndSizeVertical

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


Legend

Legend are used to add additional information for interpreting a tree map with various colors, shapes, or other identifiers.

Icon type

Icon type

The type of legend icon can be changed to built-in shapes such as circles, rectangles, or custom shapes to indicate the node color.

Icon customization

Icon customization

The position of a legend can be moved to any place inside the tree map.


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