Minus (Spatial Analyst)

Resumen

Sustrae el valor del segundo ráster de entrada del valor del primer ráster de entrada celda por celda.

Ilustración

Minus illustration
OutRas = Minus (InRas1, InRas2)

Uso

Sintaxis

Minus (in_raster_or_constant1, in_raster_or_constant2)
ParámetroExplicaciónTipo de datos
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

Valor de retorno

NombreExplicaciónTipo de datos
out_raster

The output raster.

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

Raster

Ejemplo de código

Minus example 1 (Python window)

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

import arcpy
from arcpy import env
from arcpy.sa import *
env.workspace = "C:/sapyexamples/data"
outMinus = Minus("degs", "negs")
outMinus.save("C:/sapyexamples/output/outminus")
Minus example 2 (stand-alone script)

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

# Name: Minus_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: Spatial Analyst Extension

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

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

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

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

# Execute Minus
outMinus = Minus(inRaster1, inRaster2)

# Save the output 
outMinus.save("C:/sapyexamples/output/outminus.tif")

Entornos

Temas relacionados

Información de licencia

ArcView: Requiere Spatial Analyst o 3D Analyst
ArcEditor: Requiere Spatial Analyst o 3D Analyst
ArcInfo: Requiere Spatial Analyst o 3D Analyst

7/11/2012