boolean

boolean

Conversion data type to boolean data type

Result = boolean(expression)

expression

spatial, non spatial nominal, ordinal, scalar, directional, ldd

Result

dimension of expression boolean

Operation

If expression is a PCRaster map or a calculation resulting in a PCRaster map of one of the data types nominal, ordinal, scalar, directional or ldd, converts to a Boolean data type with Boolean cell values, where 1 is TRUE and 0 is FALSE. Each expression cell value not equal to 0 is assigned a 1 (TRUE) on Result; each expression cell value equal to 0 is assigned a 0 (FALSE) on Result. Or it generates a map of boolean data type with one constant value.

If expression has no PCRaster data type, boolean generates a boolean Result. This is the case if expression is a number. This number must be in the domain of the boolean map type, i.e. 0 or 1. Result will be a map with the same location attributes as the global clone map ; all cells will have the value of expression.

Notes

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

Group

This operation belongs to the group of Conversion and assignment

See Also

Data types, Boolean data typeNumbers and data types

Examples

1. • pcrcalc

   binding

   Result = Result.map;

   Expr = Expr.map;

   initial

   report Result = boolean(Expr);

   
   

   • python

   Expr = readmap(“Expr.map”)

   Result = boolean(Expr)

   Result.map	Expr.map