# nominal¶

nominal

Data conversion data type nominal data type

Result = nominal(expression)

expression
spatial, non spatial boolean, ordinal, scalar, directional, ldd
Result
dimension of expression nominal

## Operation¶

If expression is a PCRaster map or a calculation resulting in a PCRaster map, it is converted: if expression is of one of the data types boolean, ordinal or ldd, the cell values on expression are assigned without change to the corresponding cells on Result; if expression is of data type scalar or direction, the values on expression are truncated.
Or the operation generates a map of nominal data type with one constant value.

If expression is not a PCRaster map, a nominal Result is generated. This is the case if expression is a number. This number must be in the domain of the nominal map type, i.e. a whole value. 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

## Examples¶

1. • pcrcalc
binding
Result = Result.map;
Expr = Expr.map;
initial
report Result = nominal(Expr);

• python