The Arithmetic function performs an arithmetic operation between two rasters, or a raster and a scalar operation, and vice versa.
The following table illustrates the Extent options:
|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
- Mode—Outputs the pixel value of all overlapping pixels that occurs the most. For example, if there are six bands in a raster, there will be six overlapping pixels. For the values 4, 5, 6, 4, 7, 9, the mode value is 4.
The first input raster dataset.
The second input raster dataset.
The arithmetic operation to be performed between the two input rasters.
The options are as follows:
Cellsize Type defines how to compute the pixel cell size of the output when the input rasters have different pixel cell sizes.
Extent Type defines how to compute the extent of the output when the input rasters have different extents.