Specifying an Elevation Mask

About Elevation Masks

An elevation mask is a mechanism for filtering LIDAR points based on elevations. You can eliminate points below or above a specific elevation or z value. The eliminated points are not included in the points, TIN surface or contours that are displayed on the screen. The elevation mask can be useful for quickly identifying areas above or below a specific base elevation such as for flood plains, or tsunami inundation.

How to specify an elevation mask

Eliminating points below

1. Open the Properties dialog box by clicking the button on the LP360 toolbar.

2. Click the Display tab, then click the Points Filter tab, and then the Elevation Range tab.

3. Click the "Eliminate points below elevation" check box.

4. Input an elevation.

5. To turn off the mask, uncheck the "Eliminate points below elevation" check box.

Eliminating points above

1. Open the Properties dialog box by clicking the button on the LP360 toolbar.

2. Click the Display tab, then click the Points Filter tab, and then the Elevation Range tab.

3. Click the "Eliminate points above elevation" check box.

4. Input an elevation.

5. To turn off the mask, uncheck the "Eliminate points above elevation" check box.