mikera.matrixx.impl

Class MatrixRowView

java.lang.Object

mikera.arrayz.impl.AbstractArray<Double>

mikera.vectorz.AVector

mikera.vectorz.impl.ASizedVector

mikera.vectorz.impl.AMatrixViewVector

mikera.matrixx.impl.MatrixRowView

All Implemented Interfaces:

Serializable, Cloneable, Comparable<AVector>, Iterable<Double>, INDArray, IVector

public final class MatrixRowView
extends AMatrixViewVector

A class representing a view of a matrix row as a vector. Used where no better implementations for getRowView(...) on a matrix exist.

Author:

Mike

See Also:

Serialized Form

Field Summary

Fields inherited from class mikera.vectorz.impl.AMatrixViewVector

source

Fields inherited from class mikera.vectorz.impl.ASizedVector

length

Constructor Summary

Constructors

Constructor and Description
MatrixRowView(AMatrix aMatrix, int row)

Method Summary

Modifier and Type	Method and Description
void	add(AVector v) Adds another vector to this one
void	addMultiple(AVector v, double factor) Adds a scaled multiple of another vector to this vector
void	applyOp(Op op) Applies a unary operator to all elements of the array (in-place)
void	applyOp(Op2 op, AVector v) Applies a binary operator to this vector and a second vector
void	applyOp(Op2 op, double v) Applies a binary operator to this array and a double value.
protected int	calcCol(int i) Calculates the row in the source matrix that corresponds to an index in this vector This method is unsafe: caller is assumed to have checked that the index is in range
protected int	calcRow(int i) Calculates the row in the source matrix that corresponds to an index in this vector.
AVector	clone() Clones the vector, creating a new mutable copy of all data.
double	dotProduct(double[] data, int offset) Fast dot product with a double[] array.
boolean	equals(AVector v)
MatrixRowView	exactClone() Returns an exact clone of this vector, i.e.
void	fill(double v) Fills the entire vector with a given value
double	get(int i) Returns the double value at the specified position in a 1D vector
void	getElements(double[] data, int offset) Gets all elements of the array, copying them into a double array at the specified offset
boolean	isFullyMutable() Returns true if this vector is fully mutable, i.e.
void	multiply(AVector v)
void	multiply(double factor) Multiplies the vector by a constant factor
void	set(AVector v) 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	sub(AVector v) Subtracts a vector from this vector
double	unsafeGet(int i)
void	unsafeSet(int i, double value)

Methods inherited from class mikera.vectorz.impl.AMatrixViewVector

addAt, slice

Methods inherited from class mikera.vectorz.impl.ASizedVector

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

Methods inherited from class mikera.vectorz.AVector

abs, absCopy, add, add, add, add, add, add, add, add, addAt, addCopy, addCopy, addCopy, addInnerProduct, addInnerProduct, addInnerProduct, addMultiple, addMultiple, addMultiple, addMultiple, addMultiple, addMultiple, addMultiple, addMultipleCopy, addMultipleToArray, addMultipleToArray, addPower, addPower, addPower, addProduct, addProduct, addProduct, addProductCopy, addProductCopy, addProductToArray, addProductToArray, addToArray, addToArray, addToArray, addWeighted, angle, applyOp, applyOp, applyOpCopy, asDoubleArray, asElementList, asVector, broadcast, broadcastLike, broadcastLike, broadcastLike, checkDimension, checkSameLength, clamp, clampMax, clampMin, compareTo, copy, copyTo, copyTo, copyTo, copyTo, copyTo, crossProduct, crossProduct, dense, denseClone, dimensionality, distance, distanceL1, distanceLinf, distanceSquared, divide, divide, divide, divide, divideCopy, divideCopy, divideTo, dotProduct, dotProduct, dotProduct, dotProduct, elementAbsPowSum, elementIterator, elementMax, elementMin, elementPowSum, elementProduct, elementsEqual, elementSquaredSum, elementSum, epsilonEquals, epsilonEquals, epsilonEquals, epsilonEquals, equals, equals, fillRange, get, get, get, get, getElements, getElements, getLongShape, getShape, getSlices, getTranspose, getTransposeCopy, getTransposeView, hashCode, hasUncountable, immutable, innerProduct, innerProduct, innerProduct, innerProduct, innerProduct, innerProduct, interpolate, isElementConstrained, isMutable, isRangeZero, isSameShape, isUnitLengthVector, isUnitLengthVector, isView, isZero, iterator, join, join, join, log, logistic, magnitude, magnitudeSquared, maxAbsElement, maxAbsElementIndex, maxElement, maxElementIndex, minElement, minElementIndex, multiply, multiply, multiply, multiplyCopy, multiplyCopy, multiplyCopy, multiplyTo, mutable, negate, negateCopy, nonSparseIndex, nonZeroCount, nonZeroIndices, nonZeroValues, normalise, normaliseCopy, normaliseMaxAbsElement, outerProduct, outerProduct, pow, projectToPlane, reduce, reduce, reduceSlices, reduceSlices, reorder, reorder, reshape, rotateCopy, rotateView, rotateView, scale, scaleAdd, scaleAdd, scaleAdd, scaleAdd, scaleCopy, scaleToMagnitude, select, selectClone, selectView, set, set, set, set, set, set, set, set, set, setElements, setElements, setElements, setInnerProduct, setInnerProduct, setInnerProduct, setMultiple, setMultiple, setMultiple, setMultiple, shiftCopy, signum, slice, sliceValue, softmax, softmaxCopy, sparse, sparseClone, sqrtCopy, square, squareCopy, sub, subArray, subAt, subCopy, subCopy, subMultiple, subVector, tanh, toDoubleArray, toDoubleBuffer, toList, toNormal, toSliceArray, toString, toStringFull, toVector, tryEfficientJoin, validate

Methods inherited from class mikera.arrayz.impl.AbstractArray

add, addInnerProduct, addInnerProduct, addOuterProduct, broadcastCloneLike, broadcastCopyLike, checkMutable, componentCount, density, ensureMutable, exp, get, get, get, getComponent, getComponents, getElements, getElements, getSlices, getSliceViews, isBoolean, isDense, isSparse, reciprocal, reciprocalCopy, scale, set, set, signumCopy, sqrt, sub, sub, toArray, withComponents

Methods inherited from class java.lang.Object

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

Methods inherited from interface mikera.arrayz.INDArray

addOuterProduct, broadcastCloneLike, broadcastCopyLike, checkMutable, componentCount, ensureMutable, exp, get, get, get, getComponent, getComponents, getElements, getElements, getSlices, getSliceViews, isBoolean, isDense, isSparse, reciprocal, reciprocalCopy, scale, set, set, signumCopy, sqrt, sub, toArray, withComponents

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

MatrixRowView

public MatrixRowView(AMatrix aMatrix,
                     int row)

Method Detail

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

Overrides:

get in class AMatrixViewVector

unsafeGet

public double unsafeGet(int i)

Overrides:

unsafeGet in class AMatrixViewVector

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

Overrides:

set in class AMatrixViewVector

unsafeSet

public void unsafeSet(int i,
                      double value)

Overrides:

unsafeSet in class AMatrixViewVector

isFullyMutable

public boolean isFullyMutable()

Description copied from class: AVector

Returns true if this vector is fully mutable, i.e. can contain any unconstrained double values

Specified by:

isFullyMutable in interface INDArray

Overrides:

isFullyMutable in class AVector

exactClone

public MatrixRowView 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

getElements

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

Description copied from interface: INDArray

Gets all elements of the array, copying them into a double array at the specified offset

Specified by:

getElements in interface INDArray

Overrides:

getElements in class AMatrixViewVector

calcRow

protected int calcRow(int i)

Description copied from class: AMatrixViewVector

Calculates the row in the source matrix that corresponds to an index in this vector. This method is unsafe: caller is assumed to have checked that the index is in range

Specified by:

calcRow in class AMatrixViewVector

Returns:

calcCol

protected int calcCol(int i)

Description copied from class: AMatrixViewVector

Calculates the row in the source matrix that corresponds to an index in this vector This method is unsafe: caller is assumed to have checked that the index is in range

Specified by:

calcCol in class AMatrixViewVector

Returns:

clone

public AVector 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 AVector

equals

public boolean equals(AVector v)

Overrides:

equals in class AMatrixViewVector

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

Specified by:

dotProduct in class AVector

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

Overrides:

applyOp in class AVector

applyOp

public void applyOp(Op2 op,
                    AVector v)

Description copied from class: AVector

Applies a binary operator to this vector and a second vector

Overrides:

applyOp in class AVector

applyOp

public void applyOp(Op2 op,
                    double v)

Description copied from interface: INDArray

Applies a binary operator to this array and a double value. Works as if the double value was broadcast to the shape of this array.

Specified by:

applyOp in interface INDArray

Overrides:

applyOp 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 AVector

Parameters:

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

multiply

public void multiply(AVector v)

Overrides:

multiply in class AVector

add

public void add(AVector v)

Description copied from class: AVector

Adds another vector to this one

Overrides:

add in class AVector

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 AVector

sub

public void sub(AVector v)

Description copied from class: AVector

Subtracts a vector from this vector

Overrides:

sub in class AVector

set

public void set(AVector v)

Description copied from class: AVector

Sets the vector to equal the value of another vector

Overrides:

set in class AVector

fill

public void fill(double v)

Description copied from class: AVector

Fills the entire vector with a given value

Specified by:

fill in interface INDArray

Overrides:

fill in class AVector