Mit der Spatial Analyst-Lizenz verfügbar.
Zusammenfassung
Divides the values of two rasters on a cell-by-cell basis.
Abbildung
Auswertung
Bei Verwendung eines Operators mit einem Eingabe-Raster ist das Ergebnis ein Raster. Wenn jedoch alle Eingaben Zahlen sind, dann ist das Ergebnis ebenfalls eine Zahl.
Wenn in einem Ausdruck mehrere Operatoren verwendet werden, werden sie nicht zwingend von links nach rechts ausgeführt. Vielmehr wird der Operator mit dem höchsten Vorrangswert zuerst ausgeführt. Weitere Informationen zu Operatorrangfolge finden Sie unter Operatorrangfolgentabelle. Sie können die Reihenfolge der Ausführung jedoch mithilfe von Klammern steuern.
Für diesen Operator ist die Reihenfolge der Eingabe relevant.
When a number is divided by zero, the output result is NoData.
The exact division technique used by this operator depends on the application being used when performing it.
In ArcMap, the divide operator employs the integer division technique of Python 2, where only the integer quotient is retained. If both inputs are integers, the operator performs an integer division, and the output will be an integer. For example, if 3 is divided by 2, the output is 1, or if -3 is divided by 2, the output is -2. If either input is of floating-point type, the divide operator performs a floating-point division, and the output will be a floating-point value. For example, if 3 is divided by 2.0, the output is 1.5.
In ArcGIS Pro, the floating-point division of Python 3 is always used for this operator, and the output will always be a floating-point value. For example, if 3 is divided by 2, the output is 1.5.
Another way to perform the divide operation is a /= b, which is an alternative way to write a = a / b.
Syntax
in_raster_or_constant1 / in_raster_or_constant2
| Operand | Erläuterung | Datentyp |
in_raster_or_constant1 | The input whose values will be divided by the second input. If the first input is a raster and the second is a scalar, an output raster is created with each input raster value being divided by the scalar value. | Raster Layer | Constant |
in_raster_or_constant2 | The input whose values the first input are to be divided by. If the first input is a scalar and the second is a raster, an output raster is created, with each input raster value being divided into the scalar value. | Raster Layer | Constant |
Rückgabewert
| Name | Erläuterung | Datentyp |
| out_raster | Das Ausgabe-Raster-Objekt. The cell values are the quotient of the first input raster (dividend) divided by the second input (divisor). | Raster |
Codebeispiel
/ (Division) example 1 (Python window)
This sample divides the values of the first input raster by the second.
import arcpy
from arcpy import env
from arcpy.sa import *
env.workspace = "C:/sapyexamples/data"
outDivide = Raster("degs") / Raster("negs")
outDivide.save("C:/sapyexamples/output/outdivide")
/ (Division) example 2 (stand-alone script)
This sample divides the values of the first input raster by the second.
# Name: Op_Divide_Ex_02.py
# Description: Divides the values of two rasters 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
inRaster01 = Raster("elevation")
inRaster02 = Raster("landuse")
# Check out the ArcGIS Spatial Analyst extension license
arcpy.CheckOutExtension("Spatial")
# Execute Divide
outDivide = inRaster01 / inRaster02
# Save the output
outDivide.save("C:/sapyexamples/output/outdivide2")