Is Null (Image Analyst)

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Available with Spatial Analyst license.

Available with Image Analyst license.

Summary

Determines which values from the input raster are NoData on a cell-by-cell basis.

Returns a value of 1 if the input value is NoData and 0 for cells that are not.

Illustration

Is Null illustration
OutRas = IsNull(InRas1)

Usage

  • Is Null can be used along with the Con tool to change NoData cells to a value.

  • If the input is a multiband raster, the output will be a multiband raster. The tool will perform the operation on each band in the input.

  • In ArcPy, if the input is a multidimensional raster, all slices from all variables will be processed, and the output will be a multidimensional raster.

Parameters

LabelExplanationData Type
Input raster

The input raster being tested to identify the cells that are NoData (null).

The input can be either integer or floating-point type.

Raster Layer

Return Value

LabelExplanationData Type
Output raster

The output raster.

The output identifies with an integer value of 1 which cells in the input are NoData. If the input is any other value, the output is 0.

Raster

Licensing information

  • Basic: Requires Image Analyst or Spatial Analyst
  • Standard: Requires Image Analyst or Spatial Analyst
  • Advanced: Requires Image Analyst or Spatial Analyst

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