How to display data from two or more horizons simultaneously
To view multiple horizons, or multiple attributes of one horizon, there are a few options, depending on what you would like to achieve:
Use multiple map view
![](https://media.screensteps.com/image_assets/assets/000/731/316/original/2bbc9e2b-e2cf-498d-a890-45628941ac58.png)
Open a second Map view to display each horizon (see Volumes and horizons in Map View).
There are two approaches:
- From the Control Panel, View menu, choose New Map View, OR
- Right-click on an existing map view and choose “Duplicate this window”
Merge using horizon maths
![](https://media.screensteps.com/image_assets/assets/003/317/126/original/0b0b0fac-aca0-424d-89c1-4f2968e016f8.png)
To combine two (or more) pieces of a horizon to a single surface:
- Use Operations > Horizon Maths
- Add each of the horizons to merge
- Use the Formula: merge (a, b)
For more on horizon maths see Common horizon tasks in horizon maths.
Using 3D view
![](https://media.screensteps.com/image_assets/assets/003/317/128/original/37f44229-47b7-4233-a991-07f306d9d803.png)
- Open the 3D view
- In the Control Panel > Horizon tab, toggle the display of each horizon using the 'traffic light' icon
- Enable the option in the Control Panel to display the horizon as a 3D surface, not the intersection (see Horizon Overview).
![](https://media.screensteps.com/image_assets/assets/003/317/130/original/ae2734a0-30cd-42db-8067-4d3dbb4c4f05.png)
In the 3D view, different attributes can be displayed for horizon. To display multiple attributes for the same horizon, create a duplicate and display a different attribute for each.
- Duplicate your horizon (see Copying a Horizon).
- In the Control Panel, display the original and hide the copy.
- Right-click on the original horizon in the 3D view and choose "Settings for Horizon".
- Select the property to display.
- Click the class and set the opacity.
- In the Control Panel, hide the original and show the copy.
- Right-click on the duplicate horizon in the 3D view and choose "Settings for Horizon".
- Select the property to display.
- In the Control Panel, show the original horizon again.
- Both horizon attributes are now displayed together.
For more on viewing horizon attributes in 3D view, see Horizon options in 3D view.