Available with Spatial Analyst license.
Summary
Performs a Bitwise Or operation on the binary values of two input rasters.
Illustration
Usage
Two inputs are necessary for this bitwise operation to take place.
The order of inputs is irrelevant for this tool.
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 Or operation treats the sign bit as it would any other bit. If one or both inputs for a cell location are negative, the output is negative; if both inputs are positive, the output is positive.
See Analysis environments and Spatial Analyst for additional details on the geoprocessing environments that apply to this tool.
Syntax
BitwiseOr (in_raster_or_constant1, in_raster_or_constant2)
| Parameter | Explanation | Data Type |
in_raster_or_constant1 | The first input to use in this bitwise 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 |
in_raster_or_constant2 | The second input to use in this bitwise 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 Or operation on the two inputs. | Raster |
Code Sample
BitwiseOr example 1 (Python window)
This example performs a Bitwise Or operation on two Grid rasters.
import arcpy
from arcpy import env
from arcpy.sa import *
env.workspace = "C:/sapyexamples/data"
outBitwiseOr = BitwiseOr("degs", "negs")
outBitwiseOr.save("C:/sapyexamples/output/outbitor")
BitwiseOr example 2 (stand-alone script)
This example performs a Bitwise Or operation on two Grid rasters and outputs the result as a TIFF.
# Name: BitwiseOr_Ex_02.py
# Description: Performs a Bitwise Or operation on the binary values
# of two input rasters
# 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
inRaster1 = "degs"
inRaster2 = "negs"
# Check out the ArcGIS Spatial Analyst extension license
arcpy.CheckOutExtension("Spatial")
# Execute BitwiseOr
outBitwiseOr = BitwiseOr(inRaster1, inRaster2)
# Save the output
outBitwiseOr.save("C:/sapyexamples/output/outbitwiseor.tif")
Environments
Licensing Information
- ArcGIS for Desktop Basic: Requires Spatial Analyst
- ArcGIS for Desktop Standard: Requires Spatial Analyst
- ArcGIS for Desktop Advanced: Requires Spatial Analyst