Heatmap layers describe the intensity of data at geographical points through a colored overlap. The intensity can be weighted by a numerical field.

An example of the Heatmap Layer.

# Settings

The following sections detail every setting for the Heatmap Layer.

## Basic

Core settings for the Heatmap Layer.

| Setting   | Description | 
| --- | --- | 
| Layer Type | Must be **Heatmap** to display the Heatmap Layer. | 
| Dataset | The dataset to use for the Heatmap Layer. | 
| Columns | Select a latitude and longitude. |

## Color

Color settings for the heatmap.

| Setting   | Description | 
| --- | --- | 
| Color Palette | The [color palette](https://docs.foursquare.com/analytics-products/docs/layers-color-scale-and-palettes) of the layer. | 
| Opacity | The opacity of the heatmap layer. |

## Radius

The radius/coverage of the heatmap layer.

| Setting   | Description | 
| --- | --- | 
| Radius | The radius of the heatmap. |

## Weight

Weight settings for the heatmap. Weighing by a column increases the intensity of the map for points with the specified attribute.

| Setting   | Description | 
| --- | --- | 
| Weight Based On | A column to base the weight on. |

## Heatmap

General heatmap settings.

| Setting   | Description | 
| --- | --- | 
| Intensity | Value that multiplied with the total weight at a pixel to obtain the final weight. A value larger than 1 biases the output color toward the higher end of the spectrum, while a value less than 1 biases the output toward the lower end of the spectrum. | 
| Threshold | A larger threshold smoothens the boundaries of color blobs while making pixels with low weight harder to spot. |

# JSON Schema

For details on how to programmatically specify layer properties, refer to the [Studio Layer Configuration](https://docs.foursquare.com/developer/docs/studio-layer-reference#heatmap) specification.