Limit the values of a raster layer with the Spatial Analyst extension in ArcMap

Summary

Instructions provided explain the procedure to use Raster Calculator and the Con statement to limit the values of a raster layer.

Procedure

Follow these steps to limit the values of a raster layer in ArcMap.

Note:
Enable the Spatial Analyst extension to perform these steps.

1. In ArcMap, click Search , and search for Raster Calculator. The Raster Calculator tool opens.

2. In Raster Calculator, construct one of the following expressions:

The expression below changes all cells with a value of less than zero to zero. The remainder of the cells maintain the original values.

Con("raster layer" < 0, 0, "raster layer")

The expression below changes all cells with a value of less than zero to NoData. The remainder of the cells maintain the original values.

Con("raster layer" < 0, SetNull("raster layer"), "raster layer")

3. Specify the Output raster field.
4. Click OK.