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How To: Invert a surface with ArcGIS Spatial Analyst

Summary

Instructions provided describe how to invert a surface with ArcGIS Spatial Analyst. Inverting a surface will make the lowest cell the highest and vice versa.

Procedure

  1. Start ArcMap and add surface layer.
  2. Right-click on the surface layer and select Properties.
  3. Find the minimum and maximum value.

    Note:
    These values will be needed for Step 4.

  4. Set the Extent and Cell Size to the surface layer in Spatial Analyst > Options.
  5. In the Raster Calculator type the following expression, substituting <maximum> and <minimum> with values from Step 2.

    Code:
    invert = (([elevgrd] - <maximum>) * -1) + <minimum>