# Heatmap

The **Heatmap** shows how data points are distributed across two dimensions. The plot area is divided into *buckets* (grid cells), and each bucket is colored based on how many points fall into it. This makes clusters, gaps, and density patterns in the data easy to spot.

<div data-full-width="false"><figure><img src="https://3590686807-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FwEBNWlmdcxXBXd7oyqyR%2Fuploads%2F99HGPwg0myo7bvns1UmA%2Fimage.png?alt=media&#x26;token=1e86574e-4641-464b-9a94-b0e963b7608e" alt="Heatmap" width="489"><figcaption></figcaption></figure></div>

📊 **How to read it** (with default colors):

* **Blue** = fewer points in a bucket
* **Red** = more points in a bucket
* Buckets between these extremes are shaded on a blue-to-red gradient.

**Settings**

Accessible via the ⚙️ (settings wheel) in the top-right corner of the plot:

* **X and Y axes** – Select which variables define the horizontal and vertical dimensions.
* **Plot limits** – The limits on the x or y axes, or *auto* to take the min/max from the data
* **Resample signals** – Relevant when your signals have different timestamps. See [resampling](https://docs.marpledata.com/docs/marple-insight/user-manuals/visualisation/resampling "mention") for more details.
* **Color range** – Change the lower and upper colors (default is blue–red) or the bucket count fraction. Buckets with fewer points than a specified fraction of the most populated bucket are shown in the lower color. Buckets with more points are shaded on a gradient up to the upper color.
* **Opacity** – Opacity of the plot
* &#x20;**Filters** – Filter datapoints based on conditions&#x20;

## Discover the Heatmap in 1 minute

{% embed url="<https://www.youtube.com/watch?index=22&list=PLtVuqpI9QpJAFtUEvuS23Z47XGHrRc_P9&v=2l1ZurtpCOg>" %}

Want to discover more Marple features in 1 minute? Check out other [1-minute-marple-videos](https://docs.marpledata.com/docs/other-resources/1-minute-marple-videos "mention")