![]() ![]() The performance of an operation may be enhanced by the deferred evaluation capabilities of Map Algebra. For more information, see Complex Statement Rules. To avoid this potential problem, use appropriate parentheses in the expression so that the execution order of the operators is explicitly defined. When multiple Relational and/or Boolean operators are used consecutively in a single expression, in some cases it may fail to execute. To change the order of execution, use parentheses. Therefore, when Boolean operators are used in the same expression as Relational operators, the Boolean operators will be executed first. You can use parentheses to control the execution order.īoolean ( ~, &, ^, |) operators have a higher precedence level than Relational (, >=, =, !=) operators. For more information on operator precedence, see operator precedence table. The operator with the highest precedence value will be executed first. ![]() When multiple operators are used in an expression, they are not necessarily executed in left-to-right order. To create a raster with cells of a constant value, specify the appropriate extent and cell size environment settings and enter the numerical value into the expression. When the tool is executed, the resulting raster output will be clipped based on the specified extent. You can easily clip a raster dataset by setting the extent environment and specifying the input raster name in the expression.
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