Change a particular value of a raster dataset to zero without changing the other values in ArcGIS Pro

Summary

During spatial analysis using raster data, it may be necessary to change a particular value in a raster without changing the other values to improve the display of the raster data. For example, the maximum cell value can be changed to zero while retaining the minimum cell value. While the Reclassify tool can be used to convert a certain value to zero, it can be inconvenient if the raster has a large range of values. Therefore, this task is simplified by using the Raster Calculator tool.

This article provides the workflow to change the value of the raster dataset below to zero without changing other values in ArcGIS Pro.

Procedure

1. Open the ArcGIS Pro project.
2. On the Analysis tab, in the Geoprocessing group, click Tools.
3. In the Geoprocessing pane, search for and click the Raster Calculator tool.
4. In the Raster Calculator pane, on the Parameters tab, enter the following Python syntax into the expression box. Replace <InRaster> with the name of the raster layer and <value> with the value of the raster layer.

Con("<InRaster>" == <value>, 0 , "<InRaster>")

5. For the Output raster parameter, specify a name for the new layer.
6. Click Run.

The value of the raster layer is changed to zero (0), as shown below.