Package smile.data.transform

Class ColumnTransform

java.lang.Object

smile.data.transform.ColumnTransform

All Implemented Interfaces:

Serializable, Function<Tuple,Tuple>, Transform

Direct Known Subclasses:

InvertibleColumnTransform

public class ColumnTransform
extends Object
implements Transform

Column-wise data transformation.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
ColumnTransform(String name, Map<String,Function> transforms)	Constructor.

Method Summary

Modifier and Type	Method	Description
DataFrame	apply(DataFrame data)	Applies this transform to the given argument.
Tuple	apply(Tuple x)
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.function.Function

andThen, compose

Methods inherited from interface smile.data.transform.Transform

andThen, compose

Constructor Details

ColumnTransform

public ColumnTransform(String name,
 Map<String,Function> transforms)

Constructor.

Parameters:

name - the name of transformation.

transforms - the map of column name to transform lambda.

Method Details

apply

public Tuple apply(Tuple x)

Specified by:

apply in interface Function<Tuple,Tuple>

apply

public DataFrame apply(DataFrame data)

Description copied from interface: Transform

Applies this transform to the given argument.

Specified by:

apply in interface Transform

Parameters:

data - the input data frame.

Returns:

the transformed data frame.

toString

public String toString()

Overrides:

toString in class Object