mikera.matrixx.impl

Class AArrayMatrix

java.lang.Object

mikera.arrayz.impl.AbstractArray<AVector>

mikera.matrixx.AMatrix

mikera.matrixx.impl.ARectangularMatrix

mikera.matrixx.impl.AArrayMatrix

All Implemented Interfaces:

Serializable, Cloneable, Iterable<AVector>, INDArray, IMatrix

Direct Known Subclasses:

AStridedMatrix, ATriangularMatrix

public abstract class AArrayMatrix
extends ARectangularMatrix

Abstract class for a Matrix backed with a single double[] data array Dimensions are fixed, but leaves open the possibility of arbitrary indexing

Author:

Mike

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
double[]	data

Fields inherited from class mikera.matrixx.impl.ARectangularMatrix

cols, rows

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AArrayMatrix(double[] data, int rows, int cols)

Method Summary

Modifier and Type	Method and Description
double	get(int i, int j) Returns the double value at the specified position in a 2D matrix
double[]	getArray() Gets the underlying data array for this array-backed matrix.
Matrix	getTransposeCopy() Gets a mutable transposed clone of the matrix
protected abstract int	index(int i, int j) Computes the index into the underlying data array for a given position in this array-backed matrix
abstract boolean	isPackedArray() Returns true if the data array is fully packed by this matrix in row-major order
void	set(int i, int j, double value) Sets a value at a given position in a mutable 2D array
double	unsafeGet(int i, int j) Gets an element in the matrix in an unsafe fashion, without performing bound checks The result is undefined if the row and column are out of bounds.
void	unsafeSet(int i, int j, double value) Sets an element value in the matrix in an unsafe fashion, without performing bound checks The result is undefined if the row and column are out of bounds.

Methods inherited from class mikera.matrixx.impl.ARectangularMatrix

bandLength, checkColumn, checkIndex, checkRow, checkSameShape, checkSameShape, checkSquare, columnCount, elementCount, getShape, getShape, getShapeClone, isSameShape, isSameShape, isSameShape, isSquare, rowCount

Methods inherited from class mikera.matrixx.AMatrix

abs, add, add, add, add, add2, addAt, addCopy, addCopy, addCopy, addCopy, addCopy, addInnerProduct, addInnerProduct, addInnerProduct, addMultiple, addMultiple, addMultiple, addOuterProduct, addOuterProduct, addRowMultiple, addToArray, applyOp, applyOp, applyOp, applyOp, applyOp, applyOp, applyOpCopy, asDoubleArray, asElementList, asVector, bandIndex, bandLength, bandPosition, bandStartColumn, bandStartRow, broadcast, broadcastCloneLike, broadcastCopyLike, broadcastLike, broadcastLike, checkColumnCount, checkDimension, checkRowCount, checkShape, clamp, clone, composeWith, copy, copyColumnTo, copyRowTo, dense, denseClone, determinant, diagonalProduct, dimensionality, divide, divide, divide, divide, elementIterator, elementsEqual, elementSquaredSum, elementSum, ensureMutable, epsilonEquals, epsilonEquals, epsilonEquals, epsilonEquals, equals, equals, equals, equalsArray, equalsByRows, equalsTranspose, exactClone, exp, fill, get, get, get, getBand, getBandWrapped, getColumn, getColumnClone, getColumns, getColumnView, getElements, getLeadingDiagonal, getLongShape, getRow, getRowClone, getRows, getRowView, getSlices, getSlices, getSliceViews, getTranspose, getTransposeView, hashCode, hasOrthonormalColumns, hasOrthonormalRows, hasUncountable, immutable, innerProduct, innerProduct, innerProduct, innerProduct, innerProduct, innerProduct, inputDimensions, inverse, isBoolean, isDiagonal, isElementConstrained, isFullyMutable, isHermitian, isIdentity, isInvertible, isLowerTriangular, isMutable, isOrthogonal, isOrthogonal, isPositiveDefinite, isRectangularDiagonal, isSymmetric, isUpperTriangular, isView, isZero, iterator, join, log, lowerBandwidth, lowerBandwidthLimit, mul, multiply, multiply, multiply, multiply, multiplyCopy, multiplyRow, mutable, negate, nonZeroCount, outerProduct, outputDimensions, pow, rank, reciprocal, reduce, reduce, reduceSlices, reduceSlices, reorder, reorder, replaceColumn, replaceRow, reshape, reshape, rotateView, rowDotProduct, scaleAdd, scaleAdd, set, set, set, set, set, set, set, set, setColumn, setElements, setElements, setRow, signum, slice, slice, sliceCount, sparse, sparseClone, sqrt, square, sub, sub, sub, subArray, subMatrix, swapColumns, swapRows, toAffineTransform, toArray, toDoubleArray, toDoubleBuffer, toMatrix, toMatrixTranspose, toMutableMatrix, toNestedDoubleArrays, toSliceArray, toString, toStringFull, toVector, trace, transform, transform, transformInPlace, transformInPlace, transposeInnerProduct, transposeInnerProduct, transposeInPlace, upperBandwidth, upperBandwidthLimit, validate

Methods inherited from class mikera.arrayz.impl.AbstractArray

absCopy, add, addAt, addInnerProduct, addPower, addPower, broadcastLike, checkMutable, componentCount, density, divideCopy, elementAbsPowSum, elementMax, elementMin, elementPowSum, elementProduct, equals, equalsArray, get, get, get, get, get, getComponent, getComponents, getElements, getElements, getElements, isDense, isSparse, join, multiplyCopy, negateCopy, reciprocalCopy, scale, scaleCopy, setElements, setInnerProduct, setMultiple, setMultiple, signumCopy, sliceValue, squareCopy, sub, sub, subCopy, withComponents

Methods inherited from class java.lang.Object

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

Methods inherited from interface mikera.arrayz.INDArray

absCopy, addAt, addPower, addPower, broadcastLike, checkMutable, componentCount, divideCopy, elementAbsPowSum, elementMax, elementMin, elementPowSum, elementProduct, equalsArray, get, get, get, get, get, getComponent, getComponents, getElements, getElements, getElements, isDense, isSparse, join, multiplyCopy, negateCopy, reciprocalCopy, scale, scaleCopy, setElements, setInnerProduct, setMultiple, setMultiple, signumCopy, sliceValue, squareCopy, sub, subCopy, withComponents

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Field Detail

data

public final double[] data

Constructor Detail

AArrayMatrix

protected AArrayMatrix(double[] data,
                       int rows,
                       int cols)

Method Detail

getArray

public final double[] getArray()

Gets the underlying data array for this array-backed matrix. Mutation of this data array is possible, but caution is advised as this may cause unpredictable side effects if the array is aliased elsewhere

Returns:

get

public double get(int i,
                  int j)

Description copied from interface: INDArray

Returns the double value at the specified position in a 2D matrix

Specified by:

get in interface INDArray

Specified by:

get in interface IMatrix

Specified by:

get in class AMatrix

set

public void set(int i,
                int j,
                double value)

Description copied from interface: INDArray

Sets a value at a given position in a mutable 2D array

Specified by:

set in interface INDArray

Specified by:

set in interface IMatrix

Specified by:

set in class AMatrix

unsafeGet

public double unsafeGet(int i,
                        int j)

Description copied from class: AMatrix

Gets an element in the matrix in an unsafe fashion, without performing bound checks The result is undefined if the row and column are out of bounds.

Overrides:

unsafeGet in class AMatrix

Returns:

unsafeSet

public void unsafeSet(int i,
                      int j,
                      double value)

Description copied from class: AMatrix

Sets an element value in the matrix in an unsafe fashion, without performing bound checks The result is undefined if the row and column are out of bounds.

Overrides:

unsafeSet in class AMatrix

isPackedArray

public abstract boolean isPackedArray()

Returns true if the data array is fully packed by this matrix in row-major order

Returns:

getTransposeCopy

public Matrix getTransposeCopy()

Description copied from class: AMatrix

Gets a mutable transposed clone of the matrix

Specified by:

getTransposeCopy in interface INDArray

Overrides:

getTransposeCopy in class AMatrix

index

protected abstract int index(int i,
                             int j)

Computes the index into the underlying data array for a given position in this array-backed matrix

Parameters:

i -

j -

Returns: