Conditional processing

Conditional processing makes it possible for you to specify which action to take, depending on the conditions. You can specify the conditions that must be evaluated as true before an action should be taken, as well as specify appropriate actions to take when the conditions are evaluated as false. The traditional If-Then-Else statement is an example of a conditional statement.

In this example, each input cell is tested for the condition of having a slope less that 15. If the cell tests true, a value of 100 is assigned to the output cell. If the cell tests false, a value of NoData is assigned to the output cell. The result can be used as an analysis mask to exclude undesirable areas from an analysis.

Conditional processing is especially useful for creating analysis masks. For example, in a wildfire prevention and suppression analysis, high-risk areas (true) can be assigned a value of 100, while lower-risk areas (false) can be assigned a value of NoData.