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Overview

The ASP.NET Core Blazor TreeMap is a feature-rich component used to visualize both hierarchical and flat data. Customize the look and feel of the tree maps by using built-in features like color mapping, legends, and label templates.


Leaf node

A treemap 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.

Blazor TreeMap is rendered with leaf nodes.


Levels

Render any number of child items for each individual node in the a tree map and they are categorized them to form levels.

Blazor TreeMap is rendered with multiple levels.


Color mapping

Categorize the nodes by customizing their colors based on the underlying values.

Range color mapping is applied to the nodes in Blazor TreeMap.

Range color mapping

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

Equal color mapping is applied to the nodes in Blazor TreeMap.

Equal color mapping

Use equal color mapping to differentiate an item’s fill based on its underlying value and color. For example, colors can be applied to states based on a winning candidate.

Desaturation color mapping is applied to the nodes in Blazor TreeMap.

Desaturation color mapping

Apply colors to the 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.


Data labels

Data labels in the Blazor TreeMap component are used to display more details about a particular item. Labels can be trimmed, hidden, or wrapped if the label width exceeds the item bounds.

Blazor TreeMap is rendered with data labels.


Label template

Render any HTML element as a label for the nodes in the a tree map.

Blazor TreeMap is rendered with label template.


Drill-down

Zoomable Blazor TreeMap component provides support to drill the parent items to have a more detailed look at their child items.

Blazor TreeMap is rendered with drill-down.


Legends

Use legends to add additional information for interpreting a treemap with various colors, shapes, or other identifiers.

Legend Types

The Blazor TreeMap component provides two types of legend, default and interactive.

Blazor TreeMap is rendered with default legend.

Default

A default legend contains swatches of symbols with descriptions to denote the categories of items.

Blazor TreeMap is rendered with an interactive legend.

Interactive

An interactive legend is used to find the range of an underlying item’s value on mouse over.


Legend customization

Blazor TreeMap is rendered with modified legend positions.

Legend Position

Position the legend to top, bottom, left, or right of the a tree map.

Blazor TreeMap is rendered with modified shapes for legend items.

Legend item shape

Change the legend item shape to a circle, rectangle, or another built-in custom shape to represent the items.


Layout types

Use different layouts types to view the child nodes in effective ways.

Blazor TreeMap is rendered with squarified layout type

Squarified

Visualize the data in the form of square-like rectangles with best aspect ratio in this layout.

Blazor TreeMap is rendered with auto slice and dice layout type

Auto slice and dice

Visualize the data in the form of long, thin rectangles that can be displayed either vertically or horizontally with high aspect ratio in this layout.

Blazor TreeMap is rendered with horizontal slice and dice layout type

Horizontal Slice slice and dice horizontal

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

Blazor TreeMap is rendered with vertical slice and dice layout type

Vertical slice and dice

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


Tooltip

When the mouse hovers over the an item, the interactive Blazor TreeMap component displays details about the item’s values in a tooltip.

Display a tooltip on moving the mouse over the nodes in Blazor TreeMap.


Selection and highlighting

Select a particular shape on mouse click and highlight on mouse over to bring it to the center of attraction over other items in the a tree map.

A particular shape is selected in the rendered Blazor TreeMap.


Title and subtitle

Add a title and subtitle to visualize additional information on a tree map. You can customize the font and alignment of the titles and subtitles.

Blazor TreeMap is rendered with title and subtitle


Appearance

Customize the look and feel of a tree map by changing the fill color, background, border, and opacity of the items.

Blazor TreeMap is rendered with customized nodes.

Node customization

Change the fill color, background, border, and opacity of the nodes to customize the appearance.

Blazor TreeMap is rendered with gaps for nodes.

Gap customization

Enhance the readability by customizing the gaps within the groups of leaf nodes.

Blazor TreeMap is rendered with a palette of colors for nodes.

Palette

Built-in palettes with customizable options are available by default.


Right to left (RTL)

You can render the tree map elements like nodes, headers, labels, and legends in the right-to-left direction.

Blazor TreeMap is rendered with right-to-left format


Exporting

Exports the a tree map to a PDF document or in image formats such as SVG, PNG, and JPEG in client-side.

Export Blazor TreeMap illustration.

Export

Exports the treemap to a PDF document or in image formats such as SVG, PNG, and JPEG in client-side.

Print Blazor TreeMap illustration.

Print

Print the rendered treemap directly from the browser.


Touch and browser support

The interactive TreeMap component supports touch interactions.

Blazor TreeMap Touch illustration

Touch support

All the tree map features will work on touch devices with zero configuration. Use touch features such as tooltips, drill-down, selection, and highlighting without any customization.

Blazor TreeMap Responsive illustration

Responsive

You can view the Blazor TreeMap component on various devices. Hide specific elements in a tree map for particular screen sizes by making a very minimal change in the tree map events.

Blazor TreeMap Cross browser illustration

Cross-browser support

You can render the TreeMap component in all modern browsers.


Other supported frameworks

As a pure JavaScript component, our TreeMap integrates easily with any web framework.


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