# Geospatial heatmaps in Amazon Quick
Heatmaps

Use geospatial heatmaps to reveal patterns of marker concentration in your geospatial visuals. Heat maps display concentrations of data points using a colored overlay that highlights the intensity or concentration of the visual's markers.

![\[This is an example of marker clustering at work.\]](http://docs.amazonaws.cn/en_us/quick/latest/userguide/images/heat-map-1.png)


**To turn a geospatial map into a heat map**

1. Open your analysis and choose the geospatial map that you want to format. When you select a visual, it displays with a highlight around it.

1. To open the formatting pane, select the **Format visual** icon from the on-visual menu.

1. On the formatting pane at left, choose **Points**.

1. Choose **Heatmap**.

1. (Optional) For **Heatmap gradient**, choose a color that you want for the **High density** and **Low density** values.