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.
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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 # Author: ESRI # 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")