[[heat-map]]
== Heat map

Display graphical representations of data where the individual values are represented by colors. Use heat maps when your data set includes categorical data. For example, use a heat map to see the flights of origin countries compared to destination countries using the sample flight data.

[role="screenshot"]
image::images/visualize_heat_map_example.png[]

[float]
[[build-heat-map]]
=== Build a heat map

To display your data on the heat map, use the supported aggregations.

Heat maps support the following aggregations:

* <<visualize-metric-aggregations,Metric>>
* <<visualize-parent-pipeline-aggregations,Parent pipeline>>
* <<visualize-sibling-pipeline-aggregations,Sibling pipeline>>
* <<visualize-bucket-aggregations,Bucket>>

[float]
[[navigate-heatmap]]
=== Change the color ranges

When only one color displays on the heat map, you might need to change the color ranges.

To specify the number of color ranges:

. Click *Options*.

. Enter the *Number of colors* to display.

To specify custom ranges:

. Click *Options*.

. Select *Use custom ranges*.

. Enter the ranges to display.