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Overview

The Xamarin TreeMap control is a data visualization component that 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.


Tree map levels

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

Xamarin.Forms TreeMap shows a 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.

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

Xamarin.Forms TreeMap shows customized leaf node border.

Border customization

Customize the leaf node borders to enhance readability.

Xamarin.Forms TreeMap shows customized gap for leaf node.

Gap customization

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

Xamarin.Forms TreeMap custom view support for nodes.

Custom view

The Xamarin.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 Xamarin.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 Xamarin.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 Xamarin.Forms TreeMap by single color.

Uni-color mapping

Applies a single color to the all the nodes.

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

Palette color mapping

Color each node with a color specified in palette color mapping.


Layouts

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

Xamarin.Forms TreeMap shows layout using squarified algorithm.

Squarified

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

 Xamarin.Forms TreeMap shows layout using SliceAndDiceAuto algorithm.

SliceAndDiceAuto

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.

 Xamarin.Forms TreeMap shows layout using SliceAndDiceHorizontal algorithm.

SliceAndDiceHorizontal

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

 Xamarin.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.

Xamarin.Forms TreeMap shows different types of legend icons.

Icon types

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

Xamarin.Forms TreeMap shows customized legend icons.

Icon customization

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


Data labels

Data labels can be easily annotated with Xamarin.Forms TreeMap nodes to improve the readability of particular node names.

Data label customization in TreeMap.

Label customization

The look of the default labels can be customized using the font style, size, and color properties.

Smart label alignments in TreeMap.

Smart label alignment

Labels can be aligned smartly within the node boundaries and can be trimmed, wrapped, or hidden to avoid labels overlapping.


Tooltip

Tooltips display pop-ups with additional information about the nodes when tapped.

Tooltip in TreeMap.


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