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Grid Math - Overview

Grid math allows you to create new horizon grids from the mathematical manipulation of existing horizon grids. Using horizon grids as variables and constants you can add. subtract, multiply, divide or apply exponents to create equations.

Clip and replace functions are also available. Equations are automatically saved so you do not have to enter them from scratch.

Opening the Grid Math Function

1. From the Map Menu bar select Post | Post Gridded Data (or press <g> on your keyboard). Select the data type from the submenu: time, amplitude, depth (from datum), elevation, interval velocity, average velocity, or user defined.
2. Click on the <Gridded Horizon Math> button. The Grid Math dialog box will open.
3. Follow the steps outlined in Grid Math Equations or Grid Math Examples.

• You must create horizon grids before using the grid math function. All gridded horizons used in an equation must have been created with the same grid geometry.
• On each grid math pass, you can perform calculations on time alone or time and a second attribute amplitude, depth, average velocity or interval velocity.

What do you want to do?

• Grid math functions
• Mathematical operation on horizons dialog box