Available with Spatial Analyst license.
Summary
Divides the values of two rasters on a cell-by-cell basis.
Illustration
Usage
The order of inputs is relevant for this tool.
When a number is divided by zero, the output result is NoData.
The data types of the inputs to determine the data type of the output:
- If both inputs are integers, an integer division is performed, and the output result is an integer. For example, if 3 is divided by 2, the output is 1.
- If either input is floating-point, a floating-point division is performed, and the output result is a floating-point value. For example, if 3 is divided by 2.0, the output is 1.5.
In Map Algebra, the equivalent operator symbol for this tool is "/" (link).
See Analysis environments and Spatial Analyst for additional details on the geoprocessing environments that apply to this tool.
Syntax
Divide (in_raster_or_constant1, in_raster_or_constant2)
| Parameter | Explanation | Data Type |
in_raster_or_constant1 | The input whose values will be divided 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 whose values the first input are to be divided by. 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 cell values are the quotient of the first input raster (dividend) divided by the second input (divisor). | Raster |
Code sample
Divide example 1 (Python window)
This example 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 = Divide("degs", "negs")
outDivide.save("C:/sapyexamples/output/outdivide2")
Divide example 2 (stand-alone script)
This example divides the values of the first input raster by the second.
# Name: 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 = "elevation"
inRaster02 = "landuse"
# Check out the ArcGIS Spatial Analyst extension license
arcpy.CheckOutExtension("Spatial")
# Execute Divide
outDivide = Divide(inRaster01, inRaster02)
# Save the output
outDivide.save("C:/sapyexamples/output/outdivide")
Environments
Licensing information
- ArcGIS Desktop Basic: Requires Spatial Analyst or 3D Analyst
- ArcGIS Desktop Standard: Requires Spatial Analyst or 3D Analyst
- ArcGIS Desktop Advanced: Requires Spatial Analyst or 3D Analyst