Available with Spatial Analyst license.
Available with Image Analyst license.
Spatial Analyst Map Algebra supports a series of operators. The operators can be grouped into Arithmetic, Bitwise, Boolean, and Relational categories. The available operators and their categories are listed below.
The Map Algebra operators are also available if you have an Image Analyst extension license.
The operators are overloaded since they exist in both Spatial Analyst and Python. To distinguish whether an input is a raster as opposed to a scalar variable, the input raster is cast using the Raster class: Raster("inRas").
In operators that accept two inputs, if both inputs are scalars, the Python operator will be used working on scalars. If one or both of the inputs are rasters (identified by casting with the Raster class), the Spatial Analyst operator is used and will work on each cell within the rasters. For those operators that accept a single input, if it is a scalar, then the Python operator is used; if a raster is input, the Spatial Analyst operator is used.
|Map Algebra operator||Description||Spatial Analyst GP tool|
Bitwise Left Shift
Bitwise Right Shift
Boolean Exclusive Or
Greater Than or Equal To
Less Than or Equal To
Not Equal To