> ## Documentation Index
> Fetch the complete documentation index at: https://docs.invoca.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Heatmap Charts

> The heatmap chart uses color-coding similar to a treemap, but relies on an additional attribute instead of size to represent data.

Heatmap charts are similar to [treemap charts](/s/article/treemap-charts) — both use a similar color-coding system to represent data values. However, the heatmap doesn't use size to measure data, and instead requires an additional attribute.

The value of each cell depends on the Measure you choose under **Edit chart configuration**.

## Limitations

Heatmap charts do **not** support conditional formatting.

## Where to go next

* [Treemap charts](/s/article/treemap-charts)
* [Geo heatmap charts](/s/article/geo-heatmap-charts)