Minus (3D Analyst)
Summary
Subtracts the value of the second input raster from the value of the first input raster on a cell-by-cell basis.
Illustration
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Minus_3d (InRas1, InRas2, OutRas) |
Usage
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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
| Parameter | Explanation | Data 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 product of the first input multiplied by the second. | Raster Dataset |
Code Sample
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")
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"
# Check out the ArcGIS 3D Analyst extension license
arcpy.CheckOutExtension("3D")
# Execute Minus
arcpy.Minus_3d(inRaster1, inRaster2, "C:/output/outminus.tif")