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Overview

The Xamarin.iOS 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.

Xamarin.iOS TreeMap overview.


Tree map levels

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

Xamarin.iOS TreeMap supports flat levels.

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.iOS TreeMap supports hierarchical levels.

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

A 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.

Xamarin.iOS TreeMap supports leaf node customization.

Border customization

Leaf node borders can be customized to enhance readability.

Xamarin.iOS TreeMap supports leaf node gap customization.

Gap customization

Gaps within the group of leaf nodes can be customized to enhance readability.

Xamarin.iOS TreeMap supports custom views.

Custom view

The 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.

Xamarin.iOS TreeMap supports 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.

Xamarin.iOS TreeMap supports desaturation color mapping.

Desaturation color mapping

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

Xamarin.iOS TreeMap supports uni-color mapping.

Uni-color mapping

A single color can be applied to all the nodes.

Xamarin.iOS TreeMap supports palette color mapping.

Palette color mapping

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


Layouts

Tree maps provide different types of layout options to view child nodes in effective ways.

Xamarin.iOS TreeMap supports squarified layout.

Squarified

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

Xamarin.iOS TreeMap supports slice and dice auto layout.

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.iOS TreeMap supports slice and dice horizontal layout.

SliceAndDiceHorizontal

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

Xamarin.iOS TreeMap supports slice and dice vertical layout.

SliceAndDiceVertical

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.iOS TreeMap supports different legend icons.

Icon types

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

Xamarin.iOS TreeMap supports legend customization.

Icon customization

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


Data labels

Data labels can be easily annotated with Xamarin.iOS tree map nodes to improve the readability of a particular node’s name.

Xamarin.iOS TreeMap supports label customization.

Label customization

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

Xamarin.iOS TreeMap supports smart label alignment.

Smart label alignment

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


Tooltips

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

Xamarin.iOS TreeMap supports tooltips.


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