Knowledge Base - Technical Articles


Technical Article   HowTo:  Define Z Units for a GRID

Article ID: 30566
Software:  ArcGIS - ArcEditor 8.3, 8.1, 8.1.2, 8.2, 9.0, 9.1, 9.2, 9.3, 9.3.1 ArcGIS - ArcInfo 8.2, 9.0, 8.0.1, 8.0.2, 8.1, 8.1.2, 8.3, 9.1, 9.2, 9.3, 9.3.1 ArcGIS - ArcView 8.3, 8.1, 8.1.2, 8.2, 9.0, 9.1, 9.2, 9.3, 9.3.1
Platforms:  Windows 2000, XP

Summary

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

Procedure

Follow the steps below:

  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.

Created: 3/28/2006
Last Modified: 5/3/2011

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