Treemap chart

Latest Dynatrace
How-to guide
2-min read
Published Apr 01, 2026

When to use treemap visualization

Use a treemap to visualize hierarchical (tree-structured) data as nested rectangles, where each branch is represented by a rectangle containing smaller rectangles representing subbranches. This makes it easier to compare proportions, identify patterns, and spot outliers.

Examples

Example 1

This treemap example shows bizevents by OS and browser

The chart above is based on the following query.

fetch bizevents
| filter isNotNull(browser.name)
| filter isNotNull(os.name)
| summarize count = count(), by:{os.name, browser.name}

Example 2

This treemap example shows user events by page.

The chart above is based on the following query.

fetch user.events
| filter startsWith(page.name, "/")
| summarize users = countDistinct(dt.rum.session.id) , by:{page.name, dt.rum.user_type}
| sort users desc

Title

Use the title field at the top of the options panel (initially Untitled tile or Untitled section) to add a title to your dashboard tile or notebook section.

You can use emojis such as 😃 and 🌍 and ❤️.
You can use variables.

Example:

Define variables called Status and Emoji in your dashboard.
Set the title to Current $Emoji status is $Status.
Set Status to Good.
Set Emoji to 🌍.

The title will be displayed as Current 🌍 status is Good.

Visualization

If you aren't sure that you chose the right visualization, use the visualization selector to try different visualizations.

Data mapping

The data mapping section shows how a column of your result is mapped to the visualization.

Expand for general rules on data mapping settings

Expand the Data mapping section of your visualization settings to see how data in your result is mapped to your visualization, and to adjust those settings if needed.

Mandatory fields are marked with an asterisk (*). Example:

Example data mapping: line chart
Data types are displayed next to field names in dropdowns and mapped fields.
Units are displayed when there’s only one assigned.
Result fields are grouped into Suitable and Unsuitable. Fields are marked as unsuitable if they cannot be used to display data in the visualization. Example:

Example data mapping: line chart, Time dropdown
Automatic application of data mapping default settings:

Dynatrace version 1.319+
- Already existing tiles and sections are considered to be user-defined. Their data mapping configurations aren't updated automatically.
- Newly created tiles and sections apply a data mapping setting by default. If you don't modify these settings manually, these settings might change if a new execution of the tile/section modifies the results and there are fields missing or new fields that better suit the data mapping.

Visualization-specific data mapping settings

For a treemap, the data mapping section includes:

Category: the field to use for the category (upper level of the hierarchy).
Subcategory: the field to use for the subcategory (lower level of the hierarchy).
Value: the numeric value that determines the relative sizes of the categories and subcategories in the treemap.
Color: whether to color the treemap based on the Category, Subcategory, or Value.

Colors

Select a color palette to apply to the treemap.

Units and formats

To override the default units and formats in a dashboard or notebook visualization

Select to edit the visualization tile.
Select the Visual tab.
Select Units and formats.
Select Override.
Select Override
In the dropdown list, select the item for which you want to add a unit override.
This is a numeric column of the underlying DQL result, so it varies according to the query. For example:
A fetch events query returns events. The dropdown list here lets you select a numeric field (such as transfer_size) from the results.
A timeseries avg(dt.host.cpu.usage) query returns a single timeseries for avg(dt.host.cpu.usage). That timeseries is then the only selectable option in the list.
Define the override.
- Default unit: The base unit in which the values were captured. It's None if it was not included in the DQL result, or its automatically defined by the unit passed from the DQL result. This field doesn't lead to any conversion.
- Displayed unit: Once you define a default unit, you can use Displayed unit for conversion. For example, if the DQL result defined your numeric value in the result as Bytes, Displayed unit now offers a suitable list of byte conversions such as Kilobyte and Megabyte. Unlike the Default unit, the Displayed unit is always a numeric conversion.
- Decimals displays the default number of decimals (degree of precision) to display. To see it in action, change the Decimals selection and observe the change in the visualization.
- Suffix displays the suffix to display after the unit. To see it in action, enter a string and observe the change in the visualization. When you don't find the unit you're looking for, you can use Suffix to display the desired unit.
Turn on Abbreviate large numbers if you want to display large figures in abbreviated form. For example, 1053 becomes 1.1K.

To reset to defaults (discard override settings for the selected item), select the trash can next to the item.

Example for dashboards

This example uses a line chart, but the options apply to other visualizations.

In Dashboards, create a dashboard.
Select and, in the Snippets section of the menu, select Metrics > Chart average CPU across all hosts.
In the section edit panel, select the Visual tab and select Line.
Select Units and formats.

Select Units and formats
Select Override.

Select Add Override.
In the dropdown list, select the metric for which you want to add an override. There's only one metric to select in this example.
Define the override for the displayed metric. You can observe your changes in the Y-axis of the chart.
- Default unit displays Percent (%), which is the default unit for the selected metric. Try a different setting, such as One to instead display the result as a fraction of 1.
- Displayed unit displays Auto. You can change it to a different unit, such as One to instead display the result as a fraction of 1.
  
  Only linear and static conversions are supported. For example, you cannot convert Degree Celsius(°C) into Degree Fahrenheit(°F), or convert Usd(US$) into Eur(€).
- Decimals displays the default number of decimal points (degree of precision) to display. To see it in action, change the Decimals selection and observe the change in the visualization.
  
  For example, change this:
  
  Decimals setting before
  
  To this:
  
  Decimals setting after
- Suffix displays the optional suffix to display after the unit. To see it in action, enter a string and observe the change in the visualization.

To reset to defaults (discard override settings for the selected metric), select the trash can next to the metric.