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Frequently Asked Questions

What is reclassification in ArcMap?

Reclassification is the process of reassigning one or more values in a raster dataset to new output values. The Reclassify tool is available in the Spatial Analyst extension in both ArcMap and ArcGIS Pro.

How do you reclassify a raster?

Reclassifies (or changes) the values of the input cells of a raster using a remap table. Reclassifies (or changes) the values in a raster. Slices or reclassifies the range of values of the input cells into zones of equal interval, equal area, or by natural breaks.

How to remap a raster table?

In the tool dialog, the Classify or Unique options in the Reclassification parameter allows you to generate a remap table based on the values of the input raster. The Classify option opens a dialog and allow you to specify a method from one of the Data classification methods and number of classes.

Why is the remap parameter empty in a reclassify tool?

If the input to the tool is derived data from a tool that isn't already run, the remap parameter in the Reclassify tool will be empty until the preceding tool is run and the model is validated. To avoid this, always run preceding tools before connecting their output variables as input to the Reclassify tool.


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