or, |, pcror

or, |, pcror

Boolean-or operation

Result = expression1 or expression2 # pcrcalc
Result = expression1 | expression2 # python
Result = pcror(expression1,expression2) # python

expression1

spatial, non spatial boolean

expression2

spatial, non spatial boolean

Result

spatial; non spatial if expression1 and expression2 are non spatial boolean

Operation

The cell values on expression1 and expression2 are interpreted as Boolean values; where 1 is TRUE and 0 is FALSE. For each cell the Boolean or evaluation is performed: if expression1 or expression2 or both have a cell value 1 (TRUE) Result has a cell value 1 (TRUE) on the corresponding cell; if expression1 and expression2 have a cell value 0 (FALSE) Result has cell value 0 (FALSE).

Cross table of the or operator.

or	expression1	Result
expression2 True	True	True
expression2 True	False	True
expression2 False	True	True
expression2 False	False	False

Notes

A cell with missing value on expression1 and/or expression2 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;

   Expr2 = Expr2.map;

   initial

   report Result = Expr1 or Expr2;

   
   

   • python

   Expr1 = readmap(“Expr1.map”)

   Expr2 = readmap(“Expr2.map”)

   Result = Expr1 | Expr2

   Result.map	Expr1.map	Expr2.map