> For the complete documentation index, see [llms.txt](https://docs.wem.io/platform/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.wem.io/platform/wemtipsandtricks/widgets/advanced-charts/heat-map.md).

# Heat Map

A heat map is a data visualization technique that shows magnitude of a phenomenon as color in two dimensions. The variation in color may be by hue or intensity, giving obvious visual cues to the reader about how the phenomenon is clustered or varies over space.

{% hint style="info" %}
You can find a more in depth explanation about the Heat map on [this ](<https://apexcharts.com/angular-chart-demos/heatmap-charts/ >)page:

&#x20;[https://apexcharts.com/angular-chart-demos/heatmap-charts/ ](<https://apexcharts.com/angular-chart-demos/heatmap-charts/ >)&#x20;
{% endhint %}

![Image 1: The Heat map](/files/XcMZEvoCzoRWVZ74LE9o)

**Properties of Heat Map**

<table data-header-hidden><thead><tr><th></th><th width="138"></th><th width="151"></th><th></th></tr></thead><tbody><tr><td><strong>Property Name</strong></td><td><strong>Data type</strong></td><td><strong>Type</strong></td><td><strong>Description</strong></td></tr><tr><td>Data Source</td><td>List</td><td>Data model</td><td>List containing all labels, values and series.</td></tr><tr><td>Value</td><td>Number</td><td>Expression</td><td>Set the value of the heat map.</td></tr><tr><td>Label</td><td>Text</td><td>Expression</td><td>The label on the x axis.</td></tr><tr><td>Series</td><td>Text</td><td>Expression</td><td>This field is used to create different groups from the same data source. The series are part of the y axis.</td></tr><tr><td>Color</td><td>Text</td><td>Expression</td><td>Color of the item. Note that each series can only have a single color. The first color of an item part of the series will be used.</td></tr><tr><td>Height</td><td>Number</td><td>Expression</td><td>Can be set to number, percentage of container or pixels.</td></tr></tbody></table>


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