Package org.apache.spark.ml

Class functions

Object

org.apache.spark.ml.functions

public class functions
extends Object

Constructor Summary

Constructors

Constructor	Description
functions()

Method Summary

Modifier and Type	Method	Description
static Column	array_to_vector(Column v)	Converts a column of array of numeric type into a column of dense vectors in MLlib.
static Column	vector_to_array(Column v, String dtype)	Converts a column of MLlib sparse/dense vectors into a column of dense arrays.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

functions

public functions()

Method Details

vector_to_array

public static Column vector_to_array(Column v,
 String dtype)

Converts a column of MLlib sparse/dense vectors into a column of dense arrays.

Parameters:

v - : the column of MLlib sparse/dense vectors

dtype - : the desired underlying data type in the returned array

Returns:

an array<float> if dtype is float32, or array<double> if dtype is float64

Since:

3.0.0

array_to_vector

public static Column array_to_vector(Column v)

Converts a column of array of numeric type into a column of dense vectors in MLlib.

Parameters:

v - : the column of array<NumericType&gt type

Returns:

a column of type org.apache.spark.ml.linalg.Vector

Since:

3.1.0