![]() A tool can be placed anywhere in the expression, but it should be placed in a position that produces valid Map Algebra syntax. ![]() The remaining input required by the tool must then be entered. When you click a tool in the list, the tool name and open and close parentheses () are placed in the expression where the pointer is currently positioned. The Tools list is a selection of tools that can be used in the Map Algebra expression. When the tool is used in ModelBuilder, the raster list also contains Raster model variables. The raster list contains the layers in the contents and datasets added with the Add raster button. The input Rasters list identifies the input that can be used in the Map Algebra expression. There are three main areas on the tool dialog box that are used to create a Map Algebra expression: Rasters, Tools, and the expression box. When multiple tools or operators are used in one expression, the performance of this equation will generally be faster than executing each of the operators or tools individually. Raster Calculator is designed to execute a single-line algebraic expression using multiple tools and operators.
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