# Equal To

Available with Spatial Analyst license.

Available with Image Analyst license.

## Summary

Performs a Relational equal-to operation on two inputs on a cell-by-cell basis.

Returns 1 for cells where the first raster equals the second raster and 0 for cells where it does not.

Learn more about how the Relational Math tools work

## Usage

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

• The order of inputs is irrelevant for this tool.

## Syntax

`EqualTo(in_raster_or_constant1, in_raster_or_constant2)`
 Parameter Explanation Data Type in_raster_or_constant1 The input that will be compared to for equality 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 be able 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 equality 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 be able 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

EqualTo example 1 (Python window)

This example performs a Relational equal-to operation on two Grid rasters and outputs the result as a TIFF raster.

``````import arcpy
from arcpy import env
from arcpy.ia import *
env.workspace = "C:/iapyexamples/data"
outEqualTo = EqualTo("degs", "negs")
outEqualTo.save("C:/iapyexamples/output/outequalto.tif")``````
EqualTo example 2 (stand-alone script)

This example performs a Relational equal-to operation on two Grid rasters.

``````# Name: EqualTo_Ex_02.py
# Description: Performs a relational equal-to operation on two inputs
#              on a pixel-by-pixel basis within the Analysis window
# 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 EqualTo
outEqualTo = EqualTo(inRaster1, inRaster2)

# Save the output
outEqualTo.save("C:/iapyexamples/output/outequalto")``````

## Licensing information

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