FieldRef
class FieldRef(val field: Field, val mapMissingTo: Option[Any]) extends FieldExpression with MixedEvaluator
Field references are simply pass-throughs to fields previously defined in the DataDictionary, a DerivedField, or a result field. For example, they are used in clustering models in order to define center coordinates for fields that don't need further normalization.
A missing input will produce a missing result. The optional attribute mapMissingTo may be used to map a missing result to the value specified by the attribute. If the attribute is not present, the result remains missing.
trait MixedEvaluator
trait DoubleEvaluator
trait FieldExpression
trait UnaryExpression
trait Expression
trait Evaluator
trait PmmlElement
trait Serializable
trait HasExtensions
class Object
trait Matchable
class Any