Define Z Units for a GRID

Summary

Instructions provided describe how to define Z units for a GRID.

Procedure

1. Open Windows Explorer.
2. Navigate to the location of the GRID.
3. Open the folder with the name of the image.
4. Right-click on 'prj.adf' > Open with... > select Notepad or Wordpad.
5. Of interest is the ZUNITS parameter. It may be absent or set to a value of 'NO' or 'NONE'. Change this to FEET, METERS, or a floating point value which represents units per meter.
   
6. Save the changes. The Z units are now defined.