not, ~, pcrnot

not, ~, pcrnot

Boolean-not operation

Result = not expression # (pcrcalc)
Result = ~ expression # (python)
Result = pcrnot(expression) # (python)

expression

spatial, non spatial boolean

Result

dimension of expression boolean

Operation

The cell values on expression are interpreted as Boolean values; where 1 is TRUE and 0 is FALSE. For each cell the Boolean not evaluation is performed: if expression has a cell value 1 (TRUE) Result has a cell value 0 (FALSE) on the corresponding cell; if expression has cell value 0 (FALSE) Result has cell value 1 (TRUE).

Notes

A cell with missing value on expression is assigned a missing value on Result.

Group

This operation belongs to the group of Boolean operators

Examples

1. • pcrcalc

   binding

   Result = Result.map;

   Expr1 = Expr1.map;

   initial

   report Result = not Expr1;

   
   

   • python

   Expr1 = readmap(“Expr1.map”)

   Result = ~ Expr1

   Result.map	Expr1.map