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Edit an Existing Horizon

1. Create a Map Drawing Polygon or open an existing polygon file.
2. To edit an existing horizon, right-click to open the Map Drawing menu.
3. Select Delete/ Edit | Existing Horizon to open the Horizon/Grid Polygon Editing dialog box. View image

4. Select an input horizon to edit from the pull down list.
5. Specify which data points to drop from the resulting horizon.

• Edit Picks OUTSIDE Polygon will retain all data inside the polygon and replace data outside with NO Pick.
• Edit Picks INSIDE Polygon will retain all data outside the polygon and replace data inside with NO Pick.

6. Type a unique Grid Name for the output horizon to create a new horizon in the database, or select the same name as the input horizon to overwrite the existing horizon.
7. Click <OK>.
8. Right click and select Abort Layer to exit. Go to Post Horizon/Fault to display your new horizon.

What do you want to do?

• Map Drawing Menu -Overview