Available with Image Server
The Arithmetic function performs an arithmetic operation between two rasters, or a raster and a scalar operation, and vice versa.
Notes
The following table illustrates the Extent Type options:
Input rasters | Extent if First | Extent if Last | Extent if Intersection | Extent if Union |
---|---|---|---|---|
The Operation options are as follows:
- Plus—Outputs the sum of all the corresponding pixel values for each raster.
output = Raster1 + Raster2
- Minus—Outputs the difference between the corresponding pixel values for each raster. This can be used to calculate change detection.
output = Raster1 - Raster2
- Multiply—Outputs the product of the corresponding pixel values for each raster. This can be used to perform some cost functions.
output = Raster1 × Raster2
- Divide—Outputs the divisible result between the corresponding pixel values for each raster.
output = Raster1 ÷ Raster2
- Power—Outputs the product of the corresponding pixel values raised to the power of the input raster or scalar.
output = Raster1Raster2
- Modulus—Outputs the pixel value for the modulus of 2 rasters. For example, 17 % 5 = 2.
Parameters
Parameter | Description |
---|---|
Raster | The first input raster dataset. |
Raster2 | The second input raster dataset. |
Operation | The arithmetic operation to be performed between the two input rasters. The options are as follows:
|
Cellsize Type | Cellsize Type defines how the pixel cell size of the output will be computed when the input rasters have different pixel cell sizes. The options are as follows:
|
Extent Type | Extent Type defines how the extent of the output will be computed when the input rasters have different extents. The options are as follows:
|