mikera.matrixx.impl

Class SubMatrixView

java.lang.Object

mikera.arrayz.impl.AbstractArray<AVector>

mikera.matrixx.AMatrix

mikera.matrixx.impl.ARectangularMatrix

mikera.matrixx.impl.SubMatrixView

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.lang.Comparable<INDArray>, java.lang.Iterable<AVector>, INDArray, IMatrix

public class SubMatrixView
extends ARectangularMatrix

Matrix view class that wraps a SubMatrix of another matrix

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
SubMatrixView(AMatrix source, int rowStart, int colStart, int rows, int cols)

Method Summary

Modifier and Type	Method and Description
AVector	asVector() Returns the matrix values as a single reference Vector in the form [row0 row1 row2....]
void	copyColumnTo(int col, double[] dest, int destOffset) Copies the elements in a selected row of this matrix to a double array
void	copyRowTo(int row, double[] dest, int destOffset) Copies the elements in a selected row of this matrix to a double array
AMatrix	exactClone() Creates a deep clone of an array, using the same class implementation as the original array
double	get(int i, int j) Returns the double value at the specified position in a 2D matrix
AVector	getColumn(int j) Returns a column of the matrix.
AVector	getColumnClone(int j) Returns a column of the matrix as a new cloned, mutable vector The cloned column may be modified without affecting the original matrix.
AVector	getColumnView(int j) Returns a column of the matrix as a vector view.
AVector	getRow(int i) Returns a row of the matrix.
AVector	getRowClone(int i) Returns a row of the matrix as a new cloned, mutable vector.
AVector	getRowView(int i) Returns a row of the matrix as a vector view.
boolean	isFullyMutable() If this method returns true, the INDArray is guaranteed to be fully mutable in all positions i.e.
boolean	isMutable() Returns true if the INDArray is mutable (at least partially)
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, checkRow, checkSquare, columnCount, elementCount, getElement, 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, addOuterProductSparse, addOuterProductSparse, addRowMultiple, addSparse, addSparse, addToArray, applyOp, applyOp, applyOp, applyOp, applyOp, applyOp, applyOpCopy, asDoubleArray, asElementList, bandIndex, bandPosition, bandStartColumn, bandStartRow, broadcast, broadcastCloneLike, broadcastCopyLike, broadcastLike, broadcastLike, clamp, clone, composeWith, copy, dense, denseClone, determinant, diagonalProduct, dimensionality, divide, divide, divide, divide, divideCopy, elementIterator, elementsEqual, elementSquaredSum, elementSum, ensureMutable, epsilonEquals, epsilonEquals, epsilonEquals, equals, equals, equals, equalsArray, equalsTranspose, exp, fill, get, get, get, get, getBand, getBandWrapped, getColumns, getElements, getLeadingDiagonal, getLongShape, getRows, getSlices, getSlices, getSliceViews, getTranspose, getTransposeCopy, getTransposeView, hashCode, hasOrthonormalColumns, hasOrthonormalRows, hasUncountable, immutable, innerProduct, innerProduct, innerProduct, innerProduct, innerProduct, innerProduct, inputDimensions, inverse, isBoolean, isDiagonal, isElementConstrained, isHermitian, isIdentity, isInvertible, isLowerTriangular, 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, setApplyOp, setApplyOp, setColumn, setElements, setElements, setMultiple, setMultiple, setMultiple, setMultiple, setMultiple, setRow, setSparse, setSparse, signum, slice, slice, sliceCount, sparse, sparseClone, sqrt, square, sub, sub, sub, subArray, subCopy, subMatrix, swapColumns, swapRows, toAffineTransform, 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, absDiff, absDiffCopy, add, addApplyOp, addAt, addCopy, addInnerProduct, addInnerProduct, addMultipleSparse, addPower, addPower, addSparse, broadcastLike, compareTo, componentCount, density, divideCopy, elementAbsPowSum, elementMax, elementMaxAbs, elementMin, elementPowSum, elementProduct, epsilonEquals, equals, equalsArray, get, get, get, get, getComponent, getComponents, getElements, getElements, getElements, isDense, isSparse, join, multiplyCopy, negateCopy, reciprocalCopy, scale, scaleCopy, setElements, setInnerProduct, setSparse, signumCopy, sliceValue, squareCopy, sub, sub, subCopy, withComponents

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface mikera.arrayz.INDArray

absCopy, absDiff, absDiffCopy, addApplyOp, addAt, addInnerProduct, addMultipleSparse, addPower, addPower, addSparse, broadcastLike, componentCount, divideCopy, elementAbsPowSum, elementMax, elementMaxAbs, elementMin, elementPowSum, elementProduct, epsilonEquals, equalsArray, get, get, get, get, getComponent, getComponents, getElements, getElements, getElements, isDense, isSparse, join, multiplyCopy, negateCopy, reciprocalCopy, scale, scaleCopy, setElements, setInnerProduct, setSparse, signumCopy, sliceValue, squareCopy, sub, subCopy, withComponents

Methods inherited from interface java.lang.Comparable

compareTo

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

SubMatrixView

public SubMatrixView(AMatrix source,
                     int rowStart,
                     int colStart,
                     int rows,
                     int cols)

Method Detail

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

Overrides:

set in class ARectangularMatrix

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

isFullyMutable

public boolean isFullyMutable()

Description copied from interface: INDArray

If this method returns true, the INDArray is guaranteed to be fully mutable in all positions i.e. every position can store any valid double value

Specified by:

isFullyMutable in interface INDArray

Specified by:

isFullyMutable in class AMatrix

isMutable

public boolean isMutable()

Description copied from interface: INDArray

Returns true if the INDArray is mutable (at least partially)

Specified by:

isMutable in interface INDArray

Overrides:

isMutable in class AMatrix

exactClone

public AMatrix exactClone()

Description copied from interface: INDArray

Creates a deep clone of an array, using the same class implementation as the original array

Specified by:

exactClone in interface INDArray

Specified by:

exactClone in class AMatrix

Returns:

A clone of the original array

asVector

public AVector asVector()

Description copied from class: AMatrix

Returns the matrix values as a single reference Vector in the form [row0 row1 row2....]

Specified by:

asVector in interface INDArray

Overrides:

asVector in class AMatrix

getRow

public AVector getRow(int i)

Description copied from interface: IMatrix

Returns a row of the matrix. May or may not be a view, depending on matrix type. Intended for the fastest possible read access of the row. This often means a view, but might not be (e.g. getRow on a Matrix33 returns a Vector3).

Specified by:

getRow in interface IMatrix

Overrides:

getRow in class AMatrix

getColumn

public AVector getColumn(int j)

Description copied from interface: IMatrix

Returns a column of the matrix. May or may not be a view, depending on matrix type. Intended for the fastest possible read access of the column. This often means a view, but might not be (e.g. getColumn on a Matrix33 returns a Vector3).

Specified by:

getColumn in interface IMatrix

Overrides:

getColumn in class AMatrix

getRowView

public AVector getRowView(int i)

Description copied from interface: IMatrix

Returns a row of the matrix as a vector view. May be used to modify the original matrix.

Specified by:

getRowView in interface IMatrix

Overrides:

getRowView in class AMatrix

getColumnView

public AVector getColumnView(int j)

Description copied from interface: IMatrix

Returns a column of the matrix as a vector view. May be used to modify the original matrix.

Specified by:

getColumnView in interface IMatrix

Overrides:

getColumnView in class AMatrix

getRowClone

public AVector getRowClone(int i)

Description copied from interface: IMatrix

Returns a row of the matrix as a new cloned, mutable vector. The cloned row may be modified without affecting the original matrix.

Specified by:

getRowClone in interface IMatrix

Overrides:

getRowClone in class AMatrix

getColumnClone

public AVector getColumnClone(int j)

Description copied from interface: IMatrix

Returns a column of the matrix as a new cloned, mutable vector The cloned column may be modified without affecting the original matrix.

Specified by:

getColumnClone in interface IMatrix

Overrides:

getColumnClone in class AMatrix

copyRowTo

public void copyRowTo(int row,
                      double[] dest,
                      int destOffset)

Description copied from class: AMatrix

Copies the elements in a selected row of this matrix to a double array

Overrides:

copyRowTo in class AMatrix

Parameters:

row - The index of the selected row

dest - Destination double[] array

destOffset - Offset into destination array

copyColumnTo

public void copyColumnTo(int col,
                         double[] dest,
                         int destOffset)

Description copied from class: AMatrix

Copies the elements in a selected row of this matrix to a double array

Overrides:

copyColumnTo in class AMatrix

dest - Destination double[] array