Not Equal (Image Analyst)

Available with Spatial Analyst license.

Available with Image Analyst license.

Summary

Performs a Relational not-equal-to operation on two inputs on a cell-by-cell basis.

Returns 1 for cells where the first raster is not equal to the second raster and 0 for cells where it is equal.

Learn more about how the Relational Math tools work

Illustration

OutRas = NotEqual(InRas1, 2)

Usage

• Two inputs are necessary for this relational evaluation to take place.

• The order of inputs is irrelevant for this tool.

• If both inputs are single-band rasters or one of the inputs is a constant, the output will be a single-band raster.

• If both inputs are multiband rasters, the tool will perform the operation on each band from one input, and the output will be a multiband raster. The number of bands in each multiband input must be the same.

• If one of the inputs is a multiband raster and the other input is a constant, the tool will perform the operation using the constant value for each band in the multiband input, and the output will be a multiband raster.

• If both inputs are multidimensional raster data with the same number of variables, the tool will perform the operation for all slices with the same dimension value. The output will be a multidimensional raster in CRF format. The variables in the inputs must have at least one common dimension and one common dimensional value for this tool to process; otherwise, an error will occur.

  If both inputs have one variable but different names, uncheck the Match Multidimensional Variable geoprocessing environment (set arcpy.env.matchMultidimensionalVariable = False in Python) before running the tool.

  If one of the inputs is a multidimensional raster and the other input is a constant, the tool will perform the operation for all slices for all variables using the constant value, and the output will be a multidimensional raster.

• In map algebra, the equivalent operator symbol for this tool is "!=" (link).

Parameters

Dialog

Label	Explanation	Data Type
Input raster or constant value 1	The input that will be compared to for inequality by the second input. A number can be used as an input for this parameter, provided a raster is specified for the other parameter. To specify a number for both inputs, the cell size and extent must first be set in the environment.	Raster Layer; Constant
Input raster or constant value 2	The input that will be compared from for inequality by the first input. A number can be used as an input for this parameter, provided a raster is specified for the other parameter. To specify a number for both inputs, the cell size and extent must first be set in the environment.	Raster Layer; Constant

Return Value

Label	Explanation	Data Type
Output raster	The output raster. The output cell values will be either integer 0 or 1, or NoData if any input cell value is NoData.	Raster

Python

NotEqual(in_raster_or_constant1, in_raster_or_constant2)

Name	Explanation	Data Type
in_raster_or_constant1	The input that will be compared to for inequality by the second input. A number can be used as an input for this parameter, provided a raster is specified for the other parameter. To specify a number for both inputs, the cell size and extent must first be set in the environment.	Raster Layer; Constant
in_raster_or_constant2	The input that will be compared from for inequality by the first input. A number can be used as an input for this parameter, provided a raster is specified for the other parameter. To specify a number for both inputs, the cell size and extent must first be set in the environment.	Raster Layer; Constant

Return Value

Name	Explanation	Data Type
out_raster	The output raster. The output cell values will be either integer 0 or 1, or NoData if any input cell value is NoData.	Raster

Code sample

NotEqual example 1 (Python window)

This example performs a Relational not-equal-to operation on two Grid rasters.

import arcpy
from arcpy import env
from arcpy.ia import *
env.workspace = "C:/iapyexamples/data"
outNotEqual = NotEqual("degs", "negs")
outNotEqual.save("C:/iapyexamples/output/outne")

NotEqual example 2 (stand-alone script)

This example performs a Relational not-equal-to operation on two Grid rasters.

# Name: NotEqual_Ex_02.py
# Description: Performs a relational not-equal operation on two
#              inputs on a pixel-by-pixel basis
# Requirements: Image Analyst Extension

# Import system modules
import arcpy
from arcpy import env
from arcpy.ia import *

# Set environment settings
env.workspace = "C:/iapyexamples/data"

# Set local variables
inRaster1 = "degs"
inRaster2 = "negs"

# Check out the ArcGIS Image Analyst extension license
arcpy.CheckOutExtension("ImageAnalyst")

# Execute NotEqual
outNotEqual = NotEqual(inRaster1, inRaster2)

# Save the output 
outNotEqual.save("C:/iapyexamples/output/outnotequal")

Environments

Auto Commit, Cell Size, Cell Size Projection Method, Compression, Current Workspace, Extent, Geographic Transformations, Mask, Output CONFIG Keyword, Output Coordinate System, Scratch Workspace, Snap Raster, Tile Size