Bitwise Not (Spatial Analyst)
Summary
Performs a Bitwise Not (complement) operation on the binary value of an input raster.
Illustration
Usage
If an input is floating-point, the values are converted to integer values through truncation before the bitwise operation is performed.
In bitwise operations:
- Binary values are stored in two's complement.
- The tools work on 32-bit integers.
- The leftmost bit position is reserved for the sign (positive or negative) of the value. If the integer is positive, the bit position is 0; if it's negative, the bit position is 1.
-
The Bitwise Not operation treats the sign bit as it would any other bit. If the input for a cell location is negative, the output is negative; if the input is positive, the output is positive.
Syntax
Parameter | Explanation | Data Type |
in_raster_or_constant | The input raster on which to perform the Bitwise Not (complement) operation. 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 result of a Bitwise Not operation on the input. | Raster |
Code Sample
This example performs a Bitwise Not operation on an input GRID raster.
import arcpy
from arcpy import env
from arcpy.sa import *
env.workspace = "C:/sapyexamples/data"
outBitwiseNot = BitwiseNot("degs")
outBitwiseNot.save("C:/sapyexamples/output/outbitn")
This example performs a Bitwise Not operation on an input GRID raster.
# Name: BitwiseNot_Ex_02.py
# Description: Performs a Bitwise Complement operation on the
# binary value of an input raster
# 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
inRaster = "degs"
# Check out the ArcGIS Spatial Analyst extension license
arcpy.CheckOutExtension("Spatial")
# Execute BitwiseNot
outBitwiseNot = BitwiseNot(inRaster)
# Save the output
outBitwiseNot.save("C:/sapyexamples/output/outbitnot")