Package com.singularsys.extensions.matrix.doublemat

Class DoubleVector

java.lang.Object

com.singularsys.extensions.matrix.doublemat.DoubleVector

All Implemented Interfaces:

VectorI, Serializable, Iterable<Object>

public final class DoubleVector
extends Object
implements VectorI, Serializable

A vector where the elements are doubles

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
final double[]	data
final int	nrows

Constructor Summary

Constructors

Constructor	Description
DoubleVector(double[] data)

Method Summary

Modifier and Type	Method	Description
boolean	eq(DoubleVector vec)
boolean	equals(Object obj)	Uses the Double.equals() rather than == for compatibility with hashcode.
Dimensions	getDimensions()	Gets the dimensions of the Vector or Matrix
Double	getEle(int i)	Gets the i-th element of a vector
int	getNEles()	Gets the number of elements of a vector
int	hashCode()
static DoubleVector	newInstance(double[] in)
static DoubleVector	newInstance(Double[] in)
void	setEle(int index, Object val)	Sets an element of a vector.
double[]	toArray()
Object[]	toArray(Object[] vec)
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Methods inherited from interface com.singularsys.extensions.matrix.VectorI

iterator, stream

Field Details

data

public final double[] data

nrows

public final int nrows

Constructor Details

DoubleVector

public DoubleVector(double[] data)

Parameters:

data -

Method Details

newInstance

public static DoubleVector newInstance(Double[] in)

newInstance

public static DoubleVector newInstance(double[] in)

getEle

public Double getEle(int i)
              throws EvaluationException

Description copied from interface: VectorI

Gets the i-th element of a vector

Specified by:

getEle in interface VectorI

Parameters:

i - index (starts from 0)

Returns:

the i-th element

Throws:

EvaluationException

setEle

public void setEle(int index,
 Object val)
            throws EvaluationException

Description copied from interface: VectorI

Sets an element of a vector.

Specified by:

setEle in interface VectorI

Parameters:

index -

val -

Throws:

EvaluationException

getNEles

public int getNEles()

Description copied from interface: VectorI

Gets the number of elements of a vector

Specified by:

getNEles in interface VectorI

Returns:

the number of elements

getDimensions

public Dimensions getDimensions()

Description copied from interface: VectorI

Gets the dimensions of the Vector or Matrix

Specified by:

getDimensions in interface VectorI

Returns:

the dimensions

toArray

public double[] toArray()

eq

public boolean eq(DoubleVector vec)

toString

public String toString()

Overrides:

toString in class Object

toArray

public Object[] toArray(Object[] vec)
                 throws EvaluationException

Specified by:

toArray in interface VectorI

Throws:

EvaluationException

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Uses the Double.equals() rather than == for compatibility with hashcode. Hence, NaN equals NaN and -0.0 equals 0.0. Use eq(DoubleVector) for comparison using ==.

Overrides:

equals in class Object