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Minus

Available with Spatial Analyst license.

Available with Image Analyst license.

Available with 3D Analyst license.

Summary

Subtracts the value of the second input raster from the value of the first input raster on a cell-by-cell basis.

Illustration

Minus illustration
OutRas = Minus (InRas1, InRas2)Minus_3d (InRas1, InRas2, OutRas)

Usage

  • The order of inputs is relevant for this tool.

  • If both inputs are integer, the output will be an integer raster; otherwise, it will be a floating-point raster.

Syntax

Minus_3d (in_raster_or_constant1, in_raster_or_constant2, out_raster)
ParameterExplanationData Type
in_raster_or_constant1

The input from which to subtract the values in 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 values to subtract from the values in 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
out_raster

The output raster.

The cell values are the result of subtracting the second input from the first.

Raster Dataset

Code sample

Minus example 1 (Python window)

This example subtracts the values of the second input raster from the first.

import arcpy
from arcpy import env
env.workspace = "C:/data"
arcpy.Minus_3d("elevation",  100, "c:/output/outminus")
Minus example 2 (stand-alone script)

This example subtracts the values of the second input raster from the first.

# Name: Minus_3d_Ex_02.py
# Description: Subtracts the value of the second input raster from the
#              value of the first input raster on a cell-by-cell basis
# Requirements: 3D Analyst Extension

# Import system modules
import arcpy
from arcpy import env

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

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

# Execute Minus
arcpy.Minus_3d(inRaster1, inRaster2, "C:/output/outminus.tif")

Licensing information

  • ArcGIS Desktop Basic: Requires 3D Analyst or Spatial Analyst
  • ArcGIS Desktop Standard: Requires 3D Analyst or Spatial Analyst
  • ArcGIS Desktop Advanced: Requires 3D Analyst or Spatial Analyst

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