## [HeatmapLayer](https://developers.google.com/maps/documentation/javascript/reference/visualization.md.txt#HeatmapLayer) class class `google.maps.visualization.HeatmapLayer` library `"visualization"` > [!WARNING] > **[Deprecated:](https://developers.google.com/maps/deprecations.md.txt)** The Heatmap Layer functionality in the Maps JavaScript API is no longer available in the Maps JavaScript API as of version 3.65. For more info, see . A layer that provides a client-side rendered heatmap, depicting the intensity of data at geographical points. ```javascript const {HeatmapLayer} = await google.maps.importLibrary("visualization"); ``` | ### Constructor || |---|---| | `HeatmapLayer` | `HeatmapLayer()` **Parameters:** None Creates a new instance of `HeatmapLayer`. the layer. |