mikera.vectorz

Class Vector

java.lang.Object

mikera.arrayz.impl.AbstractArray<java.lang.Double>

mikera.vectorz.AVector

mikera.vectorz.impl.ASizedVector

mikera.vectorz.impl.AArrayVector

mikera.vectorz.impl.AStridedVector

mikera.vectorz.impl.ADenseArrayVector

mikera.vectorz.Vector

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.lang.Comparable<INDArray>, java.lang.Iterable<java.lang.Double>, IDense, IDenseArray, IStridedArray, INDArray, IVector

public final class Vector
extends ADenseArrayVector

General purpose vector of arbitrary length, backed by an densely packed double[] array. This is the most efficient type for general purpose dense 1D vectors.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static Vector	EMPTY

Constructor Summary

Constructors

Constructor and Description
Vector(AVector source) Copy constructor from an arbitrary vector

Method Summary

Modifier and Type	Method and Description
void	abs() Replaces all elements of this array with their absolute values, according to Math.abs(double)
void	add(ADenseArrayVector src, int srcOffset)
void	add(AVector v) Adds another vector to this one
void	add(double constant) Adds a double value to all elements in this array.
void	add(double[] srcData, int srcOffset) Adds to this vector from a given double array.
void	addAt(int i, double v) Adds a value to a specific element of the vector This function does not perform bounds checking, i.e.
void	addMultiple(ADenseArrayVector v, double factor)
void	addMultiple(AVector v, double factor) Adds a scaled multiple of another vector to this vector
void	addMultiple(Vector source, Index index, double factor) Adds source vector to this vector at the specified indexes which should map from source->this
void	addProduct(AVector a, AVector b) Adds the element-wise product of two vectors to this vector.
void	addProduct(Vector a, Vector b)
void	addProduct(Vector a, Vector b, double factor)
void	applyOp(Op op) Applies a unary operator to all elements of the array (in-place)
double[]	asDoubleArray() Returns the underlying double array representing the densely packed elements of this array.
void	clamp(double min, double max) Clamps all values in the vector to a given range
Vector	clone() Clones the vector, creating a new mutable copy of all data.
static Vector	create(AIndex a)
static Vector	create(java.util.ArrayList<java.lang.Number> al)
static Vector	create(AVector a)
static Vector	create(double[] data) Creates a new Vector from the given double[] data.
static Vector	create(double[] data, int start, int length) Creates a new Vector from the given double[] data.
static Vector	create(INDArray a)
static Vector	create(java.lang.Iterable<java.lang.Number> iterable) Creates a Vector from the specified Iterable object
static Vector	create(java.util.Iterator<java.lang.Number> iterator) Creates a Vector from the specified Iterator object
static Vector	create(java.util.List<java.lang.Number> al)
static Vector	create(java.lang.Object o)
static Vector	createFromVector(AVector source, int length) Creates a new vector using the elements in the specified vector.
static Vector	createLength(int length) Create an empty (zero-filled) vector of a specified length
Vector	dense() Coerces this INDArray to a dense format, without changing its element values.
double	distance(AVector v) Returns the Euclidean distance to another vector.
double	distanceSquared(Vector v)
void	divide(AVector v)
void	divide(double factor) Divides all elements by a given factor
void	divide(Vector v) Performance Override for divide
double	dotProduct(AVector v, Index ix) Returns the dotProduct of this vector with the elements of another vector mapped to specified indexes in this vector.
double	dotProduct(double[] data, int offset) Fast dot product with a double[] array.
double	dotProduct(Vector v, Index ix)
double	elementMax() Returns the maximum element value in this array.
double	elementMin() Returns the maximum element value in this array.
double	elementSum() Returns the sum of all elements in a vector
Vector	ensureMutable() Ensures the array is a fully mutable representation.
boolean	equals(AVector v) Returns true if this array is exactly equal to a vector.
boolean	equalsArray(double[] arr, int offset) Returns true if this vector exactly matches the elements in double[] array, starting from the specified offset
Vector	exactClone() Returns an exact clone of this vector, i.e.
void	fill(double value) Fills the entire vector with a given value
double	get(int i) Returns the double value at the specified position in a 1D vector
int	getArrayOffset() Gets the offset into the underlying double[] data array for the first element of this vector
void	getElements(double[] dest, int destOffset) Copies all elements of this array a double array at the specified offset
void	getElements(double[] data, int offset, int[] indices) Gets the elements in this vector from the specified indices, storing at the specified offset in the destination array
int	hashCode() Computes the hashcode of a vector.
boolean	isPackedArray() Checks if this array is fully packed in row major order.
boolean	isView() Returns true if this vector is of a view type that references other vectors / data.
void	logistic() Computes the logistic function for every element in this vector.
void	multiply(AVector v) Multiplies this vector by another vector, elementwise.
void	multiply(double factor) Multiplies the vector by a constant factor
void	multiply(Vector v)
Vector	multiplyCopy(double factor) Returns a copy of the array with all elements multiplied by a single constant value
long	nonZeroCount() Returns the number of non-zero elements in the array.
static Vector	of(double... values) Create a vector with specific component values.
void	scaleAdd(double factor, double constant) Scales this vector and adds a constant to every element
void	set(AVector a) Sets the vector to equal the value of another vector
void	set(int i, double value) Sets a value at a given position in a mutable 1D array
void	setElements(double[] values, int offset) Sets all elements in an array using the given double values
void	signum() Calculates the signum of all elements of this mutable array Sets each component of the array to its sign value (-1, 0 or 1)
void	square() Squares all elements of the array in place
void	sub(ADenseArrayVector v)
void	sub(ADenseArrayVector src, int srcOffset)
void	sub(AVector v) Subtracts a vector from this vector
void	tanh() Computes the tanh of every element in this vector.
void	toDoubleBuffer(java.nio.DoubleBuffer dest) Copies the elements of this INDArray to the specified double buffer.
Vector	toNormal() Creates a new mutable vector representing the normalised value of this vector Returns null if the vector cannot be normalised (i.e.
Vector	toVector() Coerces this vector to the standard dense Vector format.
double	unsafeGet(int i) Like get, but performs no bounds checking.
void	unsafeSet(int i, double value) Like set, but performs no bounds checking.
static Vector	wrap(double[] source) Wraps a double array into a Vector, does *no defensive copy* so use with caution

Methods inherited from class mikera.vectorz.impl.ADenseArrayVector

add, add, add, add, addMultiple, addMultipleToArray, addMultipleToArray, addProduct, addProduct, addProductToArray, addProductToArray, addToArray, addToArray, applyOp, copyTo, copyTo, copyTo, copyTo, divide, divideTo, dotProduct, dotProduct, elementAbsPowSum, elementPowSum, elementProduct, elementsEqual, elementSquaredSum, equals, exp, fillRange, getStride, isRangeZero, isZero, join, join, join, log, magnitude, maxAbsElement, maxAbsElementIndex, maxElementIndex, minElementIndex, multiply, multiplyTo, nonZeroIndices, pow, reciprocal, reduce, reduce, scaleAdd, selectView, set, setElements, slice, sqrt, squareCopy, subVector, toDoubleArray, tryEfficientJoin, validate, visitNonZero

Methods inherited from class mikera.vectorz.impl.AStridedVector

applyOpCopy, broadcast, broadcastLike, getArray, getStride, getStrides, hasUncountable, iterator

Methods inherited from class mikera.vectorz.impl.ASizedVector

checkIndex, checkLength, checkRange, elementCount, equalsArray, get, getShape, getShapeClone, isSameShape, length, sliceCount

Methods inherited from class mikera.vectorz.AVector

absCopy, absDiff, absDiff, absDiff, absDiffCopy, add, add, add, add, addAt, addCopy, addCopy, addCopy, addInnerProduct, addInnerProduct, addInnerProduct, addInnerProduct, addMultiple, addMultiple, addMultiple, addMultiple, addMultiple, addMultipleCopy, addMultipleSparse, addMultipleSparse, addPower, addPower, addProductCopy, addProductCopy, addSparse, addSparse, addToArray, addWeighted, angle, applyOp, applyOp, applyOp, asElementList, asVector, broadcastLike, broadcastLike, clampMax, clampMin, compareTo, compareTo, copy, copyTo, copyTo, crossProduct, crossProduct, denseClone, dimensionality, distanceL1, distanceLinf, distanceSquared, divide, divideCopy, divideCopy, divideCopy, dotProduct, elementIterator, elementMaxAbs, epsilonEquals, epsilonEquals, epsilonEquals, equals, get, get, get, get, get, getElement, getElements, getLongShape, getShape, getSlices, getTranspose, getTransposeCopy, getTransposeView, immutable, innerProduct, innerProduct, innerProduct, innerProduct, innerProduct, innerProduct, interpolate, isElementConstrained, isFullyMutable, isMutable, isSameShape, isUnitLengthVector, isUnitLengthVector, join, join, magnitudeSquared, maxElement, minElement, multiply, multiply, multiplyCopy, multiplyCopy, mutable, negate, negateCopy, nonSparseIndex, nonZeroValues, normalise, normaliseCopy, normaliseMaxAbsElement, outerProduct, outerProduct, projectToPlane, reciprocalCopy, reduceSlices, reduceSlices, reorder, reorder, reshape, rotateCopy, rotateView, rotateView, scale, scaleAdd, scaleAdd, scaleCopy, scaleToMagnitude, select, selectClone, set, set, set, set, set, set, set, set, setApplyOp, setApplyOp, setApplyOp, setElements, setInnerProduct, setInnerProduct, setInnerProduct, setMultiple, setMultiple, setMultiple, setMultiple, setSparse, setSparse, setSparse, shiftCopy, slice, sliceValue, softmax, softmaxCopy, sparse, sparseClone, sqrtCopy, sub, subArray, subAt, subCopy, subCopy, subMultiple, toList, toSliceArray, toString, toStringFull

Methods inherited from class mikera.arrayz.impl.AbstractArray

add, addApplyOp, addCopy, addInnerProduct, addInnerProduct, addOuterProduct, addOuterProductSparse, addSparse, broadcastCloneLike, broadcastCopyLike, componentCount, density, epsilonEquals, get, get, getComponent, getComponents, getElements, getElements, getSlices, getSliceViews, isBoolean, isDense, isSparse, scale, set, set, signumCopy, sub, sub, withComponents

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface mikera.arrayz.impl.IDenseArray

getArray

Methods inherited from interface mikera.arrayz.INDArray

absCopy, absDiff, absDiffCopy, add, addApplyOp, addAt, addCopy, addCopy, addInnerProduct, addInnerProduct, addMultiple, addMultipleSparse, addOuterProduct, addOuterProductSparse, addPower, addPower, addSparse, addSparse, addToArray, applyOp, applyOp, applyOp, asElementList, asVector, broadcastCloneLike, broadcastCopyLike, broadcastLike, broadcastLike, componentCount, copy, denseClone, dimensionality, divide, divideCopy, divideCopy, elementCount, elementIterator, elementMaxAbs, epsilonEquals, epsilonEquals, equalsArray, get, get, get, get, get, get, get, get, getComponent, getComponents, getElement, getElements, getElements, getElements, getLongShape, getShape, getShape, getShapeClone, getSlices, getSlices, getSliceViews, getTranspose, getTransposeCopy, getTransposeView, immutable, innerProduct, innerProduct, innerProduct, innerProduct, isBoolean, isDense, isElementConstrained, isFullyMutable, isMutable, isSameShape, isSparse, join, join, multiply, multiplyCopy, mutable, negate, negateCopy, outerProduct, reciprocalCopy, reduceSlices, reduceSlices, reorder, reorder, reshape, rotateView, scale, scaleAdd, scaleCopy, set, set, set, set, set, set, setApplyOp, setElements, setInnerProduct, setMultiple, setMultiple, setSparse, setSparse, signumCopy, slice, sliceCount, sliceValue, sparse, sparseClone, sub, sub, subArray, subCopy, toSliceArray, withComponents

Methods inherited from interface java.lang.Comparable

compareTo

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Field Detail

EMPTY

public static final Vector EMPTY

Constructor Detail

Vector

public Vector(AVector source)

Copy constructor from an arbitrary vector

Parameters:

source -

Method Detail

wrap

public static Vector wrap(double[] source)

Wraps a double array into a Vector, does *no defensive copy* so use with caution

Parameters:

source -

Returns:

create

public static Vector create(double[] data)

Creates a new Vector from the given double[] data. Takes a defensive copy.

create

public static Vector create(java.util.ArrayList<java.lang.Number> al)

create

public static Vector create(java.util.List<java.lang.Number> al)

create

public static Vector create(java.lang.Iterable<java.lang.Number> iterable)

Creates a Vector from the specified Iterable object

Parameters:

iterable - An Iterable containing java.lang.Number instances

Returns:

create

public static Vector create(java.util.Iterator<java.lang.Number> iterator)

Creates a Vector from the specified Iterator object

Parameters:

iterator - An Iterator over java.lang.Number instances

Returns:

create

public static Vector create(java.lang.Object o)

create

public static Vector create(double[] data,
                            int start,
                            int length)

Creates a new Vector from the given double[] data. Takes a defensive copy.

createFromVector

public static Vector createFromVector(AVector source,
                                      int length)

Creates a new vector using the elements in the specified vector. Truncates or zero-pads the data as required to fill the new vector

Parameters:

data -

Returns:

of

public static Vector of(double... values)

Create a vector with specific component values. Creates a copy of the value array

Parameters:

values -

Returns:

createLength

public static Vector createLength(int length)

Create an empty (zero-filled) vector of a specified length

Parameters:

length -

Returns:

create

public static Vector create(AVector a)

create

public static Vector create(INDArray a)

create

public static Vector create(AIndex a)

get

public double get(int i)

Description copied from interface: INDArray

Returns the double value at the specified position in a 1D vector

Specified by:

get in interface INDArray

Specified by:

get in interface IVector

Specified by:

get in class ADenseArrayVector

unsafeGet

public double unsafeGet(int i)

Description copied from class: AVector

Like get, but performs no bounds checking. Results are undefined if the index is out of range

Specified by:

unsafeGet in class ADenseArrayVector

set

public void set(int i,
                double value)

Description copied from interface: INDArray

Sets a value at a given position in a mutable 1D array

Specified by:

set in interface INDArray

Specified by:

set in interface IVector

Specified by:

set in class ADenseArrayVector

unsafeSet

public void unsafeSet(int i,
                      double value)

Description copied from class: AVector

Like set, but performs no bounds checking. Results are undefined if the index is out of range

Specified by:

unsafeSet in class ADenseArrayVector

set

public void set(AVector a)

Description copied from class: AVector

Sets the vector to equal the value of another vector

Overrides:

set in class ADenseArrayVector

getElements

public void getElements(double[] data,
                        int offset,
                        int[] indices)

Description copied from class: AVector

Gets the elements in this vector from the specified indices, storing at the specified offset in the destination array

Overrides:

getElements in class AStridedVector

getArrayOffset

public int getArrayOffset()

Description copied from class: AStridedVector

Gets the offset into the underlying double[] data array for the first element of this vector

Specified by:

getArrayOffset in interface IDenseArray

Specified by:

getArrayOffset in interface IStridedArray

Specified by:

getArrayOffset in class AStridedVector

Returns:

applyOp

public void applyOp(Op op)

Description copied from interface: INDArray

Applies a unary operator to all elements of the array (in-place)

Specified by:

applyOp in interface INDArray

Specified by:

applyOp in class AStridedVector

fill

public void fill(double value)

Description copied from class: AVector

Fills the entire vector with a given value

Specified by:

fill in interface INDArray

Overrides:

fill in class ADenseArrayVector

clamp

public void clamp(double min,
                  double max)

Description copied from class: AVector

Clamps all values in the vector to a given range

Specified by:

clamp in interface INDArray

Overrides:

clamp in class ADenseArrayVector

square

public void square()

Description copied from interface: INDArray

Squares all elements of the array in place

Specified by:

square in interface INDArray

Overrides:

square in class ADenseArrayVector

tanh

public void tanh()

Description copied from class: AVector

Computes the tanh of every element in this vector. Mutates this vector.

Overrides:

tanh in class AVector

logistic

public void logistic()

Description copied from class: AVector

Computes the logistic function for every element in this vector. Mutates this vector.

Overrides:

logistic in class AVector

elementSum

public double elementSum()

Description copied from class: AVector

Returns the sum of all elements in a vector

Specified by:

elementSum in interface INDArray

Overrides:

elementSum in class ADenseArrayVector

elementMax

public double elementMax()

Description copied from interface: INDArray

Returns the maximum element value in this array. Throws an error if there are no elements.

Specified by:

elementMax in interface INDArray

Overrides:

elementMax in class ADenseArrayVector

elementMin

public double elementMin()

Description copied from interface: INDArray

Returns the maximum element value in this array. Throws an error if there are no elements.

Specified by:

elementMin in interface INDArray

Overrides:

elementMin in class ADenseArrayVector

nonZeroCount

public long nonZeroCount()

Description copied from interface: INDArray

Returns the number of non-zero elements in the array.

Specified by:

nonZeroCount in interface INDArray

Overrides:

nonZeroCount in class ADenseArrayVector

signum

public void signum()

Description copied from interface: INDArray

Calculates the signum of all elements of this mutable array Sets each component of the array to its sign value (-1, 0 or 1)

Specified by:

signum in interface INDArray

Overrides:

signum in class ADenseArrayVector

abs

public void abs()

Description copied from interface: INDArray

Replaces all elements of this array with their absolute values, according to Math.abs(double)

Specified by:

abs in interface INDArray

Overrides:

abs in class AVector

add

public void add(ADenseArrayVector src,
                int srcOffset)

Overrides:

add in class ADenseArrayVector

addMultiple

public void addMultiple(ADenseArrayVector v,
                        double factor)

Overrides:

addMultiple in class ADenseArrayVector

add

public void add(AVector v)

Description copied from class: AVector

Adds another vector to this one

Overrides:

add in class ADenseArrayVector

add

public void add(double[] srcData,
                int srcOffset)

Description copied from class: AVector

Adds to this vector from a given double array.

Overrides:

add in class ADenseArrayVector

scaleAdd

public void scaleAdd(double factor,
                     double constant)

Description copied from class: AVector

Scales this vector and adds a constant to every element

Specified by:

scaleAdd in interface INDArray

Overrides:

scaleAdd in class ADenseArrayVector

add

public void add(double constant)

Description copied from interface: INDArray

Adds a double value to all elements in this array. Implementations may optimize the case of 0.0

Specified by:

add in interface INDArray

Overrides:

add in class ADenseArrayVector

addProduct

public void addProduct(AVector a,
                       AVector b)

Description copied from class: AVector

Adds the element-wise product of two vectors to this vector. Mutates this vector.

Overrides:

addProduct in class ADenseArrayVector

addProduct

public void addProduct(Vector a,
                       Vector b)

addProduct

public void addProduct(Vector a,
                       Vector b,
                       double factor)

addAt

public void addAt(int i,
                  double v)

Description copied from class: AVector

Adds a value to a specific element of the vector This function does not perform bounds checking, i.e. is an unsafe operation

Specified by:

addAt in class AStridedVector

sub

public void sub(AVector v)

Description copied from class: AVector

Subtracts a vector from this vector

Overrides:

sub in class AVector

dotProduct

public double dotProduct(AVector v,
                         Index ix)

Description copied from class: AVector

Returns the dotProduct of this vector with the elements of another vector mapped to specified indexes in this vector.

Overrides:

dotProduct in class AVector

Returns:

dotProduct

public double dotProduct(Vector v,
                         Index ix)

dotProduct

public double dotProduct(double[] data,
                         int offset)

Description copied from class: AVector

Fast dot product with a double[] array. Performs no bounds checking. Likely to be faster than most other dot product operations

Overrides:

dotProduct in class ADenseArrayVector

multiplyCopy

public Vector multiplyCopy(double factor)

Description copied from interface: INDArray

Returns a copy of the array with all elements multiplied by a single constant value

Specified by:

multiplyCopy in interface INDArray

Overrides:

multiplyCopy in class AVector

Parameters:

factor - A scalar factor

Returns:

A new array, with all element values scaled by the given factor

distanceSquared

public double distanceSquared(Vector v)

distance

public double distance(AVector v)

Description copied from class: AVector

Returns the Euclidean distance to another vector.

Overrides:

distance in class AVector

Returns:

sub

public void sub(ADenseArrayVector v)

sub

public void sub(ADenseArrayVector src,
                int srcOffset)

addMultiple

public void addMultiple(AVector v,
                        double factor)

Description copied from class: AVector

Adds a scaled multiple of another vector to this vector

Overrides:

addMultiple in class ADenseArrayVector

addMultiple

public void addMultiple(Vector source,
                        Index index,
                        double factor)

Description copied from class: AVector

Adds source vector to this vector at the specified indexes which should map from source->this

Overrides:

addMultiple in class AVector

multiply

public void multiply(double factor)

Description copied from class: AVector

Multiplies the vector by a constant factor

Specified by:

multiply in interface INDArray

Overrides:

multiply in class ADenseArrayVector

Parameters:

factor - Factor by which to multiply each component of the vector

multiply

public void multiply(AVector v)

Description copied from class: AVector

Multiplies this vector by another vector, elementwise.

Overrides:

multiply in class ADenseArrayVector

multiply

public void multiply(Vector v)

divide

public void divide(AVector v)

Overrides:

divide in class ADenseArrayVector

divide

public void divide(Vector v)

Performance Override for divide

divide

public void divide(double factor)

Description copied from interface: INDArray

Divides all elements by a given factor

Specified by:

divide in interface INDArray

Overrides:

divide in class AVector

isView

public boolean isView()

Description copied from class: AVector

Returns true if this vector is of a view type that references other vectors / data.

Specified by:

isView in interface INDArray

Overrides:

isView in class ADenseArrayVector

clone

public Vector clone()

Description copied from class: AVector

Clones the vector, creating a new mutable copy of all data. The clone is: - not guaranteed to be of the same type. - guaranteed to be fully mutable - guaranteed not to contain a reference (i.e. is a full deep copy)

Specified by:

clone in interface INDArray

Specified by:

clone in interface IVector

Overrides:

clone in class AStridedVector

hashCode

public int hashCode()

Description copied from class: AVector

Computes the hashcode of a vector. Currently defined to be equal to List.hashCode for a equivalent list of Double values, this may change in future versions.

Overrides:

hashCode in class AVector

ensureMutable

public Vector ensureMutable()

Description copied from interface: INDArray

Ensures the array is a fully mutable representation. Returns either the same array or a new clone.

Specified by:

ensureMutable in interface INDArray

Overrides:

ensureMutable in class AStridedVector

exactClone

public Vector exactClone()

Description copied from class: AVector

Returns an exact clone of this vector, i.e. of the same type

Specified by:

exactClone in interface INDArray

Specified by:

exactClone in class AVector

Returns:

A clone of the original array

isPackedArray

public boolean isPackedArray()

Description copied from interface: IStridedArray

Checks if this array is fully packed in row major order.

Specified by:

isPackedArray in interface IStridedArray

Overrides:

isPackedArray in class ADenseArrayVector

Returns:

toDoubleBuffer

public void toDoubleBuffer(java.nio.DoubleBuffer dest)

Description copied from interface: INDArray

Copies the elements of this INDArray to the specified double buffer.

Specified by:

toDoubleBuffer in interface INDArray

Overrides:

toDoubleBuffer in class ADenseArrayVector

toNormal

public Vector toNormal()

Description copied from class: AVector

Creates a new mutable vector representing the normalised value of this vector Returns null if the vector cannot be normalised (i.e. is a zero length vector)

Overrides:

toNormal in class AVector

Returns:

toVector

public Vector toVector()

Description copied from class: AVector

Coerces this vector to the standard dense Vector format. May return the same vector is this is already a dense Vector, otherwise returns a Vector containing a new clone of the vector elements.

Specified by:

toVector in interface INDArray

Overrides:

toVector in class AVector

asDoubleArray

public double[] asDoubleArray()

Description copied from interface: INDArray

Returns the underlying double array representing the densely packed elements of this array. Modifications to this double array will change the original array. Returns null if there is no such array.

Specified by:

asDoubleArray in interface INDArray

Overrides:

asDoubleArray in class AStridedVector

dense

public Vector dense()

Description copied from interface: INDArray

Coerces this INDArray to a dense format, without changing its element values. May return the same INDArray if already dense. May also mutate the internal structure of the original NDArray, or create a view over parts of the original INDArray. You should take a defensive copy of the original NDArray if any of this concerns you. The returned dense array may not be fully mutable in all elements.

Specified by:

dense in interface INDArray

Overrides:

dense in class ADenseArrayVector

equals

public boolean equals(AVector v)

Description copied from class: AbstractArray

Returns true if this array is exactly equal to a vector.

Overrides:

equals in class ADenseArrayVector

Returns:

equalsArray

public boolean equalsArray(double[] arr,
                           int offset)

Description copied from class: AVector

Returns true if this vector exactly matches the elements in double[] array, starting from the specified offset

Specified by:

equalsArray in interface INDArray

Overrides:

equalsArray in class ADenseArrayVector

Parameters:

arr - Array of double element values to check for equality

offset - Offset into the data array

Returns:

setElements

public void setElements(double[] values,
                        int offset)

Description copied from interface: INDArray

Sets all elements in an array using the given double values

Specified by:

setElements in interface INDArray

Specified by:

setElements in class AStridedVector

Parameters:

values - Element values in a double[] array. There must be at least as many element values as elements in this array.

offset - Position in the values array from which to start taking values.

getElements

public void getElements(double[] dest,
                        int destOffset)

Description copied from interface: INDArray

Copies all elements of this array a double array at the specified offset

Specified by:

getElements in interface INDArray

Overrides:

getElements in class ADenseArrayVector