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I have a grid where the minimum value is -9999.99. how can I change the minimum value to 0?

You can change the grid minimum value to 0 using Grid Math. To do this:

  1. Click Grids | Calculate | Math.
  2. In the Grid Math dialog, click the Add Grids button, select the grid file and click Open.
  3. Specify a new name for the Output Grid File, if desired.
  4. Enter the function max(A,0) to replace all negative values with 0, or you can use the function IF(A=-9999.99, 0, A) to specifically replace only -9999.99 with 0 (leaving other negative values alone).
  5. Click OK and the new grid file is created.

 

Updated January 30, 2017

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