/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.math3.linear;
import org.apache.commons.math3.exception.DimensionMismatchException;
import org.apache.commons.math3.exception.NoDataException;
import org.apache.commons.math3.exception.NotPositiveException;
import org.apache.commons.math3.exception.NotStrictlyPositiveException;
import org.apache.commons.math3.exception.NullArgumentException;
import org.apache.commons.math3.exception.NumberIsTooSmallException;
import org.apache.commons.math3.exception.OutOfRangeException;
/**
* Interface defining a real-valued matrix with basic algebraic operations.
* <p>
* Matrix element indexing is 0-based -- e.g., <code>getEntry(0, 0)</code>
* returns the element in the first row, first column of the matrix.</p>
*
*/
public interface RealMatrix extends AnyMatrix {
/**
* Create a new RealMatrix of the same type as the instance with the
* supplied
* row and column dimensions.
*
* @param rowDimension the number of rows in the new matrix
* @param columnDimension the number of columns in the new matrix
* @return a new matrix of the same type as the instance
* @throws NotStrictlyPositiveException if row or column dimension is not
* positive.
* @since 2.0
*/
RealMatrix createMatrix(int rowDimension, int columnDimension)
throws NotStrictlyPositiveException;
/**
* Returns a (deep) copy of this.
*
* @return matrix copy
*/
RealMatrix copy();
/**
* Returns the sum of {@code this} and {@code m}.
*
* @param m matrix to be added
* @return {@code this + m}
* @throws MatrixDimensionMismatchException if {@code m} is not the same
* size as {@code this}.
*/
RealMatrix add(RealMatrix m)
throws MatrixDimensionMismatchException;
/**
* Returns {@code this} minus {@code m}.
*
* @param m matrix to be subtracted
* @return {@code this - m}
* @throws MatrixDimensionMismatchException if {@code m} is not the same
* size as {@code this}.
*/
RealMatrix subtract(RealMatrix m)
throws MatrixDimensionMismatchException;
/**
* Returns the result of adding {@code d} to each entry of {@code this}.
*
* @param d value to be added to each entry
* @return {@code d + this}
*/
RealMatrix scalarAdd(double d);
/**
* Returns the result of multiplying each entry of {@code this} by
* {@code d}.
*
* @param d value to multiply all entries by
* @return {@code d * this}
*/
RealMatrix scalarMultiply(double d);
/**
* Returns the result of postmultiplying {@code this} by {@code m}.
*
* @param m matrix to postmultiply by
* @return {@code this * m}
* @throws DimensionMismatchException if
* {@code columnDimension(this) != rowDimension(m)}
*/
RealMatrix multiply(RealMatrix m)
throws DimensionMismatchException;
/**
* Returns the result of premultiplying {@code this} by {@code m}.
*
* @param m matrix to premultiply by
* @return {@code m * this}
* @throws DimensionMismatchException if
* {@code rowDimension(this) != columnDimension(m)}
*/
RealMatrix preMultiply(RealMatrix m)
throws DimensionMismatchException;
/**
* Returns the result of multiplying {@code this} with itself {@code p}
* times. Depending on the underlying storage, instability for high powers
* might occur.
*
* @param p raise {@code this} to power {@code p}
* @return {@code this^p}
* @throws NotPositiveException if {@code p < 0}
* @throws NonSquareMatrixException if the matrix is not square
*/
RealMatrix power(final int p)
throws NotPositiveException, NonSquareMatrixException;
/**
* Returns matrix entries as a two-dimensional array.
*
* @return 2-dimensional array of entries
*/
double[][] getData();
/**
* Returns the <a href="http://mathworld.wolfram.com/MaximumAbsoluteRowSumNorm.html">
* maximum absolute row sum norm</a> of the matrix.
*
* @return norm
*/
double getNorm();
/**
* Returns the <a href="http://mathworld.wolfram.com/FrobeniusNorm.html">
* Frobenius norm</a> of the matrix.
*
* @return norm
*/
double getFrobeniusNorm();
/**
* Gets a submatrix. Rows and columns are indicated
* counting from 0 to n-1.
*
* @param startRow Initial row index
* @param endRow Final row index (inclusive)
* @param startColumn Initial column index
* @param endColumn Final column index (inclusive)
* @return The subMatrix containing the data of the
* specified rows and columns.
* @throws OutOfRangeException if the indices are not valid.
* @throws NumberIsTooSmallException if {@code endRow < startRow} or
* {@code endColumn < startColumn}.
*/
RealMatrix getSubMatrix(int startRow, int endRow, int startColumn,
int endColumn)
throws OutOfRangeException, NumberIsTooSmallException;
/**
* Gets a submatrix. Rows and columns are indicated counting from 0 to n-1.
*
* @param selectedRows Array of row indices.
* @param selectedColumns Array of column indices.
* @return The subMatrix containing the data in the specified rows and
* columns
* @throws NullArgumentException if the row or column selections are
* {@code null}
* @throws NoDataException if the row or column selections are empty (zero
* length).
* @throws OutOfRangeException if the indices are not valid.
*/
RealMatrix getSubMatrix(int[] selectedRows, int[] selectedColumns)
throws NullArgumentException, NoDataException, OutOfRangeException;
/**
* Copy a submatrix. Rows and columns are indicated counting from 0 to n-1.
*
* @param startRow Initial row index
* @param endRow Final row index (inclusive)
* @param startColumn Initial column index
* @param endColumn Final column index (inclusive)
* @param destination The arrays where the submatrix data should be copied
* (if larger than rows/columns counts, only the upper-left part will be
* used)
* @throws OutOfRangeException if the indices are not valid.
* @throws NumberIsTooSmallException if {@code endRow < startRow} or
* {@code endColumn < startColumn}.
* @throws MatrixDimensionMismatchException if the destination array is too
* small.
*/
void copySubMatrix(int startRow, int endRow, int startColumn,
int endColumn, double[][] destination)
throws OutOfRangeException, NumberIsTooSmallException,
MatrixDimensionMismatchException;
/**
* Copy a submatrix. Rows and columns are indicated counting from 0 to n-1.
*
* @param selectedRows Array of row indices.
* @param selectedColumns Array of column indices.
* @param destination The arrays where the submatrix data should be copied
* (if larger than rows/columns counts, only the upper-left part will be
* used)
* @throws NullArgumentException if the row or column selections are
* {@code null}
* @throws NoDataException if the row or column selections are empty (zero
* length).
* @throws OutOfRangeException if the indices are not valid.
* @throws MatrixDimensionMismatchException if the destination array is too
* small.
*/
void copySubMatrix(int[] selectedRows, int[] selectedColumns,
double[][] destination)
throws OutOfRangeException, NullArgumentException, NoDataException,
MatrixDimensionMismatchException;
/**
* Replace the submatrix starting at {@code row, column} using data in the
* input {@code subMatrix} array. Indexes are 0-based.
* <p>
* Example:<br>
* Starting with <pre>
* 1 2 3 4
* 5 6 7 8
* 9 0 1 2
* </pre>
* and <code>subMatrix = {{3, 4} {5,6}}</code>, invoking
* {@code setSubMatrix(subMatrix,1,1))} will result in <pre>
* 1 2 3 4
* 5 3 4 8
* 9 5 6 2
* </pre></p>
*
* @param subMatrix array containing the submatrix replacement data
* @param row row coordinate of the top, left element to be replaced
* @param column column coordinate of the top, left element to be replaced
* @throws NoDataException if {@code subMatrix} is empty.
* @throws OutOfRangeException if {@code subMatrix} does not fit into
* this matrix from element in {@code (row, column)}.
* @throws DimensionMismatchException if {@code subMatrix} is not rectangular
* (not all rows have the same length) or empty.
* @throws NullArgumentException if {@code subMatrix} is {@code null}.
* @since 2.0
*/
void setSubMatrix(double[][] subMatrix, int row, int column)
throws NoDataException, OutOfRangeException,
DimensionMismatchException, NullArgumentException;
/**
* Get the entries at the given row index as a row matrix. Row indices start
* at 0.
*
* @param row Row to be fetched.
* @return row Matrix.
* @throws OutOfRangeException if the specified row index is invalid.
*/
RealMatrix getRowMatrix(int row) throws OutOfRangeException;
/**
* Sets the specified {@code row} of {@code this} matrix to the entries of
* the specified row {@code matrix}. Row indices start at 0.
*
* @param row Row to be set.
* @param matrix Row matrix to be copied (must have one row and the same
* number of columns as the instance).
* @throws OutOfRangeException if the specified row index is invalid.
* @throws MatrixDimensionMismatchException if the row dimension of the
* {@code matrix} is not {@code 1}, or the column dimensions of {@code this}
* and {@code matrix} do not match.
*/
void setRowMatrix(int row, RealMatrix matrix)
throws OutOfRangeException, MatrixDimensionMismatchException;
/**
* Get the entries at the given column index as a column matrix. Column
* indices start at 0.
*
* @param column Column to be fetched.
* @return column Matrix.
* @throws OutOfRangeException if the specified column index is invalid.
*/
RealMatrix getColumnMatrix(int column)
throws OutOfRangeException;
/**
* Sets the specified {@code column} of {@code this} matrix to the entries
* of the specified column {@code matrix}. Column indices start at 0.
*
* @param column Column to be set.
* @param matrix Column matrix to be copied (must have one column and the
* same number of rows as the instance).
* @throws OutOfRangeException if the specified column index is invalid.
* @throws MatrixDimensionMismatchException if the column dimension of the
* {@code matrix} is not {@code 1}, or the row dimensions of {@code this}
* and {@code matrix} do not match.
*/
void setColumnMatrix(int column, RealMatrix matrix)
throws OutOfRangeException, MatrixDimensionMismatchException;
/**
* Returns the entries in row number {@code row} as a vector. Row indices
* start at 0.
*
* @param row Row to be fetched.
* @return a row vector.
* @throws OutOfRangeException if the specified row index is invalid.
*/
RealVector getRowVector(int row)
throws OutOfRangeException;
/**
* Sets the specified {@code row} of {@code this} matrix to the entries of
* the specified {@code vector}. Row indices start at 0.
*
* @param row Row to be set.
* @param vector row vector to be copied (must have the same number of
* column as the instance).
* @throws OutOfRangeException if the specified row index is invalid.
* @throws MatrixDimensionMismatchException if the {@code vector} dimension
* does not match the column dimension of {@code this} matrix.
*/
void setRowVector(int row, RealVector vector)
throws OutOfRangeException, MatrixDimensionMismatchException;
/**
* Get the entries at the given column index as a vector. Column indices
* start at 0.
*
* @param column Column to be fetched.
* @return a column vector.
* @throws OutOfRangeException if the specified column index is invalid
*/
RealVector getColumnVector(int column)
throws OutOfRangeException;
/**
* Sets the specified {@code column} of {@code this} matrix to the entries
* of the specified {@code vector}. Column indices start at 0.
*
* @param column Column to be set.
* @param vector column vector to be copied (must have the same number of
* rows as the instance).
* @throws OutOfRangeException if the specified column index is invalid.
* @throws MatrixDimensionMismatchException if the {@code vector} dimension
* does not match the row dimension of {@code this} matrix.
*/
void setColumnVector(int column, RealVector vector)
throws OutOfRangeException, MatrixDimensionMismatchException;
/**
* Get the entries at the given row index. Row indices start at 0.
*
* @param row Row to be fetched.
* @return the array of entries in the row.
* @throws OutOfRangeException if the specified row index is not valid.
*/
double[] getRow(int row) throws OutOfRangeException;
/**
* Sets the specified {@code row} of {@code this} matrix to the entries
* of the specified {@code array}. Row indices start at 0.
*
* @param row Row to be set.
* @param array Row matrix to be copied (must have the same number of
* columns as the instance)
* @throws OutOfRangeException if the specified row index is invalid.
* @throws MatrixDimensionMismatchException if the {@code array} length does
* not match the column dimension of {@code this} matrix.
*/
void setRow(int row, double[] array)
throws OutOfRangeException, MatrixDimensionMismatchException;
/**
* Get the entries at the given column index as an array. Column indices
* start at 0.
*
* @param column Column to be fetched.
* @return the array of entries in the column.
* @throws OutOfRangeException if the specified column index is not valid.
*/
double[] getColumn(int column) throws OutOfRangeException;
/**
* Sets the specified {@code column} of {@code this} matrix to the entries
* of the specified {@code array}. Column indices start at 0.
*
* @param column Column to be set.
* @param array Column array to be copied (must have the same number of
* rows as the instance).
* @throws OutOfRangeException if the specified column index is invalid.
* @throws MatrixDimensionMismatchException if the {@code array} length does
* not match the row dimension of {@code this} matrix.
*/
void setColumn(int column, double[] array)
throws OutOfRangeException, MatrixDimensionMismatchException;
/**
* Get the entry in the specified row and column. Row and column indices
* start at 0.
*
* @param row Row index of entry to be fetched.
* @param column Column index of entry to be fetched.
* @return the matrix entry at {@code (row, column)}.
* @throws OutOfRangeException if the row or column index is not valid.
*/
double getEntry(int row, int column) throws OutOfRangeException;
/**
* Set the entry in the specified row and column. Row and column indices
* start at 0.
*
* @param row Row index of entry to be set.
* @param column Column index of entry to be set.
* @param value the new value of the entry.
* @throws OutOfRangeException if the row or column index is not valid
* @since 2.0
*/
void setEntry(int row, int column, double value) throws OutOfRangeException;
/**
* Adds (in place) the specified value to the specified entry of
* {@code this} matrix. Row and column indices start at 0.
*
* @param row Row index of the entry to be modified.
* @param column Column index of the entry to be modified.
* @param increment value to add to the matrix entry.
* @throws OutOfRangeException if the row or column index is not valid.
* @since 2.0
*/
void addToEntry(int row, int column, double increment) throws OutOfRangeException;
/**
* Multiplies (in place) the specified entry of {@code this} matrix by the
* specified value. Row and column indices start at 0.
*
* @param row Row index of the entry to be modified.
* @param column Column index of the entry to be modified.
* @param factor Multiplication factor for the matrix entry.
* @throws OutOfRangeException if the row or column index is not valid.
* @since 2.0
*/
void multiplyEntry(int row, int column, double factor) throws OutOfRangeException;
/**
* Returns the transpose of this matrix.
*
* @return transpose matrix
*/
RealMatrix transpose();
/**
* Returns the <a href="http://mathworld.wolfram.com/MatrixTrace.html">
* trace</a> of the matrix (the sum of the elements on the main diagonal).
*
* @return the trace.
* @throws NonSquareMatrixException if the matrix is not square.
*/
double getTrace() throws NonSquareMatrixException;
/**
* Returns the result of multiplying this by the vector {@code v}.
*
* @param v the vector to operate on
* @return {@code this * v}
* @throws DimensionMismatchException if the length of {@code v} does not
* match the column dimension of {@code this}.
*/
double[] operate(double[] v) throws DimensionMismatchException;
/**
* Returns the result of multiplying this by the vector {@code v}.
*
* @param v the vector to operate on
* @return {@code this * v}
* @throws DimensionMismatchException if the dimension of {@code v} does not
* match the column dimension of {@code this}.
*/
RealVector operate(RealVector v) throws DimensionMismatchException;
/**
* Returns the (row) vector result of premultiplying this by the vector {@code v}.
*
* @param v the row vector to premultiply by
* @return {@code v * this}
* @throws DimensionMismatchException if the length of {@code v} does not
* match the row dimension of {@code this}.
*/
double[] preMultiply(double[] v) throws DimensionMismatchException;
/**
* Returns the (row) vector result of premultiplying this by the vector {@code v}.
*
* @param v the row vector to premultiply by
* @return {@code v * this}
* @throws DimensionMismatchException if the dimension of {@code v} does not
* match the row dimension of {@code this}.
*/
RealVector preMultiply(RealVector v) throws DimensionMismatchException;
/**
* Visit (and possibly change) all matrix entries in row order.
* <p>Row order starts at upper left and iterating through all elements
* of a row from left to right before going to the leftmost element
* of the next row.</p>
* @param visitor visitor used to process all matrix entries
* @see #walkInRowOrder(RealMatrixPreservingVisitor)
* @see #walkInRowOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInRowOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @see #walkInColumnOrder(RealMatrixChangingVisitor)
* @see #walkInColumnOrder(RealMatrixPreservingVisitor)
* @see #walkInColumnOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInColumnOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @see #walkInOptimizedOrder(RealMatrixChangingVisitor)
* @see #walkInOptimizedOrder(RealMatrixPreservingVisitor)
* @see #walkInOptimizedOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInOptimizedOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @return the value returned by {@link RealMatrixChangingVisitor#end()} at the end
* of the walk
*/
double walkInRowOrder(RealMatrixChangingVisitor visitor);
/**
* Visit (but don't change) all matrix entries in row order.
* <p>Row order starts at upper left and iterating through all elements
* of a row from left to right before going to the leftmost element
* of the next row.</p>
* @param visitor visitor used to process all matrix entries
* @see #walkInRowOrder(RealMatrixChangingVisitor)
* @see #walkInRowOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInRowOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @see #walkInColumnOrder(RealMatrixChangingVisitor)
* @see #walkInColumnOrder(RealMatrixPreservingVisitor)
* @see #walkInColumnOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInColumnOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @see #walkInOptimizedOrder(RealMatrixChangingVisitor)
* @see #walkInOptimizedOrder(RealMatrixPreservingVisitor)
* @see #walkInOptimizedOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInOptimizedOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @return the value returned by {@link RealMatrixPreservingVisitor#end()} at the end
* of the walk
*/
double walkInRowOrder(RealMatrixPreservingVisitor visitor);
/**
* Visit (and possibly change) some matrix entries in row order.
* <p>Row order starts at upper left and iterating through all elements
* of a row from left to right before going to the leftmost element
* of the next row.</p>
* @param visitor visitor used to process all matrix entries
* @param startRow Initial row index
* @param endRow Final row index (inclusive)
* @param startColumn Initial column index
* @param endColumn Final column index
* @throws OutOfRangeException if the indices are not valid.
* @throws NumberIsTooSmallException if {@code endRow < startRow} or
* {@code endColumn < startColumn}.
* @see #walkInRowOrder(RealMatrixChangingVisitor)
* @see #walkInRowOrder(RealMatrixPreservingVisitor)
* @see #walkInRowOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @see #walkInColumnOrder(RealMatrixChangingVisitor)
* @see #walkInColumnOrder(RealMatrixPreservingVisitor)
* @see #walkInColumnOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInColumnOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @see #walkInOptimizedOrder(RealMatrixChangingVisitor)
* @see #walkInOptimizedOrder(RealMatrixPreservingVisitor)
* @see #walkInOptimizedOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInOptimizedOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @return the value returned by {@link RealMatrixChangingVisitor#end()} at the end
* of the walk
*/
double walkInRowOrder(RealMatrixChangingVisitor visitor, int startRow,
int endRow, int startColumn, int endColumn)
throws OutOfRangeException, NumberIsTooSmallException;
/**
* Visit (but don't change) some matrix entries in row order.
* <p>Row order starts at upper left and iterating through all elements
* of a row from left to right before going to the leftmost element
* of the next row.</p>
* @param visitor visitor used to process all matrix entries
* @param startRow Initial row index
* @param endRow Final row index (inclusive)
* @param startColumn Initial column index
* @param endColumn Final column index
* @throws OutOfRangeException if the indices are not valid.
* @throws NumberIsTooSmallException if {@code endRow < startRow} or
* {@code endColumn < startColumn}.
* @see #walkInRowOrder(RealMatrixChangingVisitor)
* @see #walkInRowOrder(RealMatrixPreservingVisitor)
* @see #walkInRowOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInColumnOrder(RealMatrixChangingVisitor)
* @see #walkInColumnOrder(RealMatrixPreservingVisitor)
* @see #walkInColumnOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInColumnOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @see #walkInOptimizedOrder(RealMatrixChangingVisitor)
* @see #walkInOptimizedOrder(RealMatrixPreservingVisitor)
* @see #walkInOptimizedOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInOptimizedOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @return the value returned by {@link RealMatrixPreservingVisitor#end()} at the end
* of the walk
*/
double walkInRowOrder(RealMatrixPreservingVisitor visitor, int startRow,
int endRow, int startColumn, int endColumn)
throws OutOfRangeException, NumberIsTooSmallException;
/**
* Visit (and possibly change) all matrix entries in column order.
* <p>Column order starts at upper left and iterating through all elements
* of a column from top to bottom before going to the topmost element
* of the next column.</p>
* @param visitor visitor used to process all matrix entries
* @see #walkInRowOrder(RealMatrixChangingVisitor)
* @see #walkInRowOrder(RealMatrixPreservingVisitor)
* @see #walkInRowOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInRowOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @see #walkInColumnOrder(RealMatrixPreservingVisitor)
* @see #walkInColumnOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInColumnOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @see #walkInOptimizedOrder(RealMatrixChangingVisitor)
* @see #walkInOptimizedOrder(RealMatrixPreservingVisitor)
* @see #walkInOptimizedOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInOptimizedOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @return the value returned by {@link RealMatrixChangingVisitor#end()} at the end
* of the walk
*/
double walkInColumnOrder(RealMatrixChangingVisitor visitor);
/**
* Visit (but don't change) all matrix entries in column order.
* <p>Column order starts at upper left and iterating through all elements
* of a column from top to bottom before going to the topmost element
* of the next column.</p>
* @param visitor visitor used to process all matrix entries
* @see #walkInRowOrder(RealMatrixChangingVisitor)
* @see #walkInRowOrder(RealMatrixPreservingVisitor)
* @see #walkInRowOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInRowOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @see #walkInColumnOrder(RealMatrixChangingVisitor)
* @see #walkInColumnOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInColumnOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @see #walkInOptimizedOrder(RealMatrixChangingVisitor)
* @see #walkInOptimizedOrder(RealMatrixPreservingVisitor)
* @see #walkInOptimizedOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInOptimizedOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @return the value returned by {@link RealMatrixPreservingVisitor#end()} at the end
* of the walk
*/
double walkInColumnOrder(RealMatrixPreservingVisitor visitor);
/**
* Visit (and possibly change) some matrix entries in column order.
* <p>Column order starts at upper left and iterating through all elements
* of a column from top to bottom before going to the topmost element
* of the next column.</p>
* @param visitor visitor used to process all matrix entries
* @param startRow Initial row index
* @param endRow Final row index (inclusive)
* @param startColumn Initial column index
* @param endColumn Final column index
* @throws OutOfRangeException if the indices are not valid.
* @throws NumberIsTooSmallException if {@code endRow < startRow} or
* {@code endColumn < startColumn}.
* @see #walkInRowOrder(RealMatrixChangingVisitor)
* @see #walkInRowOrder(RealMatrixPreservingVisitor)
* @see #walkInRowOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInRowOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @see #walkInColumnOrder(RealMatrixChangingVisitor)
* @see #walkInColumnOrder(RealMatrixPreservingVisitor)
* @see #walkInColumnOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @see #walkInOptimizedOrder(RealMatrixChangingVisitor)
* @see #walkInOptimizedOrder(RealMatrixPreservingVisitor)
* @see #walkInOptimizedOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInOptimizedOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @return the value returned by {@link RealMatrixChangingVisitor#end()} at the end
* of the walk
*/
double walkInColumnOrder(RealMatrixChangingVisitor visitor, int startRow,
int endRow, int startColumn, int endColumn)
throws OutOfRangeException, NumberIsTooSmallException;
/**
* Visit (but don't change) some matrix entries in column order.
* <p>Column order starts at upper left and iterating through all elements
* of a column from top to bottom before going to the topmost element
* of the next column.</p>
* @param visitor visitor used to process all matrix entries
* @param startRow Initial row index
* @param endRow Final row index (inclusive)
* @param startColumn Initial column index
* @param endColumn Final column index
* @throws OutOfRangeException if the indices are not valid.
* @throws NumberIsTooSmallException if {@code endRow < startRow} or
* {@code endColumn < startColumn}.
* @see #walkInRowOrder(RealMatrixChangingVisitor)
* @see #walkInRowOrder(RealMatrixPreservingVisitor)
* @see #walkInRowOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInRowOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @see #walkInColumnOrder(RealMatrixChangingVisitor)
* @see #walkInColumnOrder(RealMatrixPreservingVisitor)
* @see #walkInColumnOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInOptimizedOrder(RealMatrixChangingVisitor)
* @see #walkInOptimizedOrder(RealMatrixPreservingVisitor)
* @see #walkInOptimizedOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInOptimizedOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @return the value returned by {@link RealMatrixPreservingVisitor#end()} at the end
* of the walk
*/
double walkInColumnOrder(RealMatrixPreservingVisitor visitor, int startRow,
int endRow, int startColumn, int endColumn)
throws OutOfRangeException, NumberIsTooSmallException;
/**
* Visit (and possibly change) all matrix entries using the fastest possible order.
* <p>The fastest walking order depends on the exact matrix class. It may be
* different from traditional row or column orders.</p>
* @param visitor visitor used to process all matrix entries
* @see #walkInRowOrder(RealMatrixChangingVisitor)
* @see #walkInRowOrder(RealMatrixPreservingVisitor)
* @see #walkInRowOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInRowOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @see #walkInColumnOrder(RealMatrixChangingVisitor)
* @see #walkInColumnOrder(RealMatrixPreservingVisitor)
* @see #walkInColumnOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInColumnOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @see #walkInOptimizedOrder(RealMatrixPreservingVisitor)
* @see #walkInOptimizedOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInOptimizedOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @return the value returned by {@link RealMatrixChangingVisitor#end()} at the end
* of the walk
*/
double walkInOptimizedOrder(RealMatrixChangingVisitor visitor);
/**
* Visit (but don't change) all matrix entries using the fastest possible order.
* <p>The fastest walking order depends on the exact matrix class. It may be
* different from traditional row or column orders.</p>
* @param visitor visitor used to process all matrix entries
* @see #walkInRowOrder(RealMatrixChangingVisitor)
* @see #walkInRowOrder(RealMatrixPreservingVisitor)
* @see #walkInRowOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInRowOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @see #walkInColumnOrder(RealMatrixChangingVisitor)
* @see #walkInColumnOrder(RealMatrixPreservingVisitor)
* @see #walkInColumnOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInColumnOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @see #walkInOptimizedOrder(RealMatrixChangingVisitor)
* @see #walkInOptimizedOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInOptimizedOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @return the value returned by {@link RealMatrixPreservingVisitor#end()} at the end
* of the walk
*/
double walkInOptimizedOrder(RealMatrixPreservingVisitor visitor);
/**
* Visit (and possibly change) some matrix entries using the fastest possible order.
* <p>The fastest walking order depends on the exact matrix class. It may be
* different from traditional row or column orders.</p>
* @param visitor visitor used to process all matrix entries
* @param startRow Initial row index
* @param endRow Final row index (inclusive)
* @param startColumn Initial column index
* @param endColumn Final column index (inclusive)
* @throws OutOfRangeException if the indices are not valid.
* @throws NumberIsTooSmallException if {@code endRow < startRow} or
* {@code endColumn < startColumn}.
* @see #walkInRowOrder(RealMatrixChangingVisitor)
* @see #walkInRowOrder(RealMatrixPreservingVisitor)
* @see #walkInRowOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInRowOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @see #walkInColumnOrder(RealMatrixChangingVisitor)
* @see #walkInColumnOrder(RealMatrixPreservingVisitor)
* @see #walkInColumnOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInColumnOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @see #walkInOptimizedOrder(RealMatrixChangingVisitor)
* @see #walkInOptimizedOrder(RealMatrixPreservingVisitor)
* @see #walkInOptimizedOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @return the value returned by {@link RealMatrixChangingVisitor#end()} at the end
* of the walk
*/
double walkInOptimizedOrder(RealMatrixChangingVisitor visitor,
int startRow, int endRow, int startColumn, int endColumn)
throws OutOfRangeException, NumberIsTooSmallException;
/**
* Visit (but don't change) some matrix entries using the fastest possible order.
* <p>The fastest walking order depends on the exact matrix class. It may be
* different from traditional row or column orders.</p>
* @param visitor visitor used to process all matrix entries
* @param startRow Initial row index
* @param endRow Final row index (inclusive)
* @param startColumn Initial column index
* @param endColumn Final column index (inclusive)
* @throws OutOfRangeException if the indices are not valid.
* @throws NumberIsTooSmallException if {@code endRow < startRow} or
* {@code endColumn < startColumn}.
* @see #walkInRowOrder(RealMatrixChangingVisitor)
* @see #walkInRowOrder(RealMatrixPreservingVisitor)
* @see #walkInRowOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInRowOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @see #walkInColumnOrder(RealMatrixChangingVisitor)
* @see #walkInColumnOrder(RealMatrixPreservingVisitor)
* @see #walkInColumnOrder(RealMatrixChangingVisitor, int, int, int, int)
* @see #walkInColumnOrder(RealMatrixPreservingVisitor, int, int, int, int)
* @see #walkInOptimizedOrder(RealMatrixChangingVisitor)
* @see #walkInOptimizedOrder(RealMatrixPreservingVisitor)
* @see #walkInOptimizedOrder(RealMatrixChangingVisitor, int, int, int, int)
* @return the value returned by {@link RealMatrixPreservingVisitor#end()} at the end
* of the walk
*/
double walkInOptimizedOrder(RealMatrixPreservingVisitor visitor,
int startRow, int endRow, int startColumn, int endColumn)
throws OutOfRangeException, NumberIsTooSmallException;
}