# Altitude Heatmap Visualization

Select **Altitude Heatmap** to visualize the height of your Terrain at different levels of elevation. 

![The visualization editor](images/4-41-toolbox-heatmap-01.png)

| **Property**         | **Description**                                              |
| -------------------- | ------------------------------------------------------------ |
| **Reference Space**  | Select either **World Space** or **Local Space**. Click World Space to use the scene's origin as the sea level. Click Local Space to use the terrain's origin as the sea level. |
| **Measurement Unit** | Select either **Meters** or **Feet**. A Unity unit is equivalent to 1 meter, which is approximately 3.28 feet. |
| **Levels**           | Use the slider to select how many levels of elevation to visualize. |
| **Levels Altitude**  | Alternatively, enter an altitude level in the number field.  |
| **Levels Color**     | Use the color field or Eyedropper tool to select a color to use when visualizing a specific height level. |