jsat.linear

Class RowColumnOps

java.lang.Object

jsat.linear.RowColumnOps

public class RowColumnOps
extends java.lang.Object

A collection of mutable Row and Column operations that can be performed on matrices.

Constructor Summary

Constructors

Constructor and Description
RowColumnOps()

Method Summary

Modifier and Type	Method and Description
static void	addCol(Matrix A, int j, double c) Updates the values of column j in the given matrix to be A[:,j] = A[:,j]+ c
static void	addCol(Matrix A, int j, int start, int to, double c) Updates the values of column j in the given matrix to be A[:,j] = A[:,j]+ c
static void	addDiag(Matrix A, int start, int to, double c) Updates the values along the main diagonal of the matrix by adding a constant to them
static void	addMultCol(Matrix A, int j, int start, int to, double t, double[] c) Updates the values of column j in the given matrix to be A[:,j] = A[:,j]+c[:]*t. The Matrix A and array c do not need to have the same dimensions, so long as they both have indices in the given range.
static void	addMultCol(Matrix A, int j, int start, int to, double t, Vec c) Updates the values of column j in the given matrix to be A[:,j] = A[:,j]+c[:]*t. The Matrix A and vector c do not need to have the same dimensions, so long as they both have indices in the given range.
static void	addMultRow(Matrix A, int i, int start, int to, double t, double[] c) Updates the values of row i in the given matrix to be A[i,:] = A[i,:]+c[:]*t. The Matrix A and array c do not need to have the same dimensions, so long as they both have indices in the given range.
static void	addMultRow(Matrix A, int i, int start, int to, double t, Vec c) Updates the values of row i in the given matrix to be A[i,:] = A[i,:]+c[:]*t. The Matrix A and array c do not need to have the same dimensions, so long as they both have indices in the given range.
static void	addRow(Matrix A, int i, double c) Updates the values of row i in the given matrix to be A[i,:] = A[i,:]+ c
static void	addRow(Matrix A, int i, int start, int to, double c) Updates the values of row i in the given matrix to be A[i,:] = A[i,:]+ c
static void	divCol(Matrix A, int j, double c) Updates the values of column j in the given matrix to be A[:,j] = A[:,j]/c
static void	divCol(Matrix A, int j, int start, int to, double c) Updates the values of column j in the given matrix to be A[:,j] = A[:,j]/c
static void	divCol(Matrix A, int j, int start, int to, double[] c) Updates the values of column j in the given matrix to be A[:,j] = A[:,j]/c[j]. The Matrix A and array c do not need to have the same dimensions, so long as they both have indices in the given range.
static void	divCol(Matrix A, int j, int start, int to, Vec c) Updates the values of column j in the given matrix to be A[:,j] = A[:,j]/c[j]. The Matrix A and vector c do not need to have the same dimensions, so long as they both have indices in the given range.
static void	divRow(Matrix A, int i, double c) Updates the values of row i in the given matrix to be A[i,:] = A[i,:] / c
static void	divRow(Matrix A, int i, int start, int to, double c) Updates the values of row i in the given matrix to be A[i,:] = A[i,:] / c
static void	fillCol(Matrix A, int j, int from, int to, double val) Fills the values in a column of the matrix
static void	fillRow(Matrix A, int i, int from, int to, double val) Fills the values in a row of the matrix
static void	multCol(Matrix A, int j, double c) Updates the values of column j in the given matrix to be A[:,j] = A[:,j]* c
static void	multCol(Matrix A, int j, int start, int to, double c) Updates the values of column j in the given matrix to be A[:,j] = A[:,j]* c
static void	multRow(Matrix A, int i, double c) Updates the values of row i in the given matrix to be A[i,:] = A[i,:] * c
static void	multRow(Matrix A, int i, double[] c) Updates the values of row i in the given matrix to be A[i,:] = A[i,:] .* c[i]
static void	multRow(Matrix A, int i, int start, int to, double c) Updates the values of row i in the given matrix to be A[i,:] = A[i,:] * c
static void	multRow(Matrix A, int i, int start, int to, double[] c) Updates the values of row i in the given matrix to be A[i,:] = A[i,:] .* c[i] The Matrix A and array c do not need to have the same dimensions, so long as they both have indices in the given range.
static void	multRow(Matrix A, int i, int start, int to, Vec c) Updates the values of row i in the given matrix to be A[i,:] = A[i,:] .* c[i] The Matrix A and vector c do not need to have the same dimensions, so long as they both have indices in the given range.
static void	multRow(Matrix A, int i, Vec c) Updates the values of row i in the given matrix to be A[i,:] = A[i,:] .* c[i] The Matrix A and vector c do not need to have the same dimensions, so long as they both have indices in the given range.
static void	swapCol(Matrix A, int j, int k) Swaps the columns j and k in the given matrix.
static void	swapCol(Matrix A, int j, int k, int start, int to) Swaps the columns j and k in the given matrix.
static void	swapRow(Matrix A, int j, int k) Swaps the columns j and k in the given matrix.
static void	swapRow(Matrix A, int j, int k, int start, int to) Swaps the rows j and k in the given matrix.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RowColumnOps

public RowColumnOps()

Method Detail

addDiag

public static void addDiag(Matrix A,
                           int start,
                           int to,
                           double c)

Updates the values along the main diagonal of the matrix by adding a constant to them

Parameters:

A - the matrix to perform the update on

start - the first index of the diagonals to update (inclusive)

to - the last index of the diagonals to update (exclusive)

c - the constant to add to the diagonal

addRow

public static void addRow(Matrix A,
                          int i,
                          int start,
                          int to,
                          double c)

Updates the values of row i in the given matrix to be A[i,:] = A[i,:]+ c

Parameters:

A - the matrix to perform he update on

i - the row to update

start - the first index of the row to update from (inclusive)

to - the last index of the row to update (exclusive)

c - the constant to add to each element

addRow

public static void addRow(Matrix A,
                          int i,
                          double c)

Updates the values of row i in the given matrix to be A[i,:] = A[i,:]+ c

Parameters:

A - the matrix to perform he update on

i - the row to update

c - the constant to add to each element

multRow

public static void multRow(Matrix A,
                           int i,
                           int start,
                           int to,
                           double c)

Updates the values of row i in the given matrix to be A[i,:] = A[i,:] * c

Parameters:

A - the matrix to perform he update on

i - the row to update

start - the first index of the row to update from (inclusive)

to - the last index of the row to update (exclusive)

c - the constant to multiply each element by

multRow

public static void multRow(Matrix A,
                           int i,
                           double c)

Updates the values of row i in the given matrix to be A[i,:] = A[i,:] * c

Parameters:

A - the matrix to perform he update on

i - the row to update

c - the constant to multiply each element by

multRow

public static void multRow(Matrix A,
                           int i,
                           int start,
                           int to,
                           Vec c)

Updates the values of row i in the given matrix to be A[i,:] = A[i,:] .* c[i] The Matrix A and vector c do not need to have the same dimensions, so long as they both have indices in the given range.

Parameters:

A - the matrix to perform he update on

i - the row to update

start - the first index of the row to update from (inclusive)

to - the last index of the row to update (exclusive)

c - the vector of values to multiple the elements of A by

multRow

public static void multRow(Matrix A,
                           int i,
                           Vec c)

Updates the values of row i in the given matrix to be A[i,:] = A[i,:] .* c[i] The Matrix A and vector c do not need to have the same dimensions, so long as they both have indices in the given range.

Parameters:

A - the matrix to perform he update on

i - the row to update

c - the vector of values to multiple the elements of A by

multRow

public static void multRow(Matrix A,
                           int i,
                           int start,
                           int to,
                           double[] c)

Updates the values of row i in the given matrix to be A[i,:] = A[i,:] .* c[i] The Matrix A and array c do not need to have the same dimensions, so long as they both have indices in the given range.

Parameters:

A - the matrix to perform he update on

i - the row to update

start - the first index of the row to update from (inclusive)

to - the last index of the row to update (exclusive)

c - the array of values to multiple the elements of A by

multRow

public static void multRow(Matrix A,
                           int i,
                           double[] c)

Updates the values of row i in the given matrix to be A[i,:] = A[i,:] .* c[i]

Parameters:

A - the matrix to perform he update on

i - the row to update

c - the array of values to multiple the elements of A by

divRow

public static void divRow(Matrix A,
                          int i,
                          int start,
                          int to,
                          double c)

Updates the values of row i in the given matrix to be A[i,:] = A[i,:] / c

Parameters:

A - the matrix to perform he update on

i - the row to update

start - the first index of the row to update from (inclusive)

to - the last index of the row to update (exclusive)

c - the constant to divide each element by

divRow

public static void divRow(Matrix A,
                          int i,
                          double c)

Updates the values of row i in the given matrix to be A[i,:] = A[i,:] / c

Parameters:

A - the matrix to perform he update on

i - the row to update

c - the constant to divide each element by

addCol

public static void addCol(Matrix A,
                          int j,
                          int start,
                          int to,
                          double c)

Updates the values of column j in the given matrix to be A[:,j] = A[:,j]+ c

Parameters:

A - the matrix to perform he update on

j - the row to update

start - the first index of the row to update from (inclusive)

to - the last index of the row to update (exclusive)

c - the constant to add to each element

addCol

public static void addCol(Matrix A,
                          int j,
                          double c)

Updates the values of column j in the given matrix to be A[:,j] = A[:,j]+ c

Parameters:

A - the matrix to perform he update on

j - the row to update

c - the constant to add to each element

multCol

public static void multCol(Matrix A,
                           int j,
                           int start,
                           int to,
                           double c)

Updates the values of column j in the given matrix to be A[:,j] = A[:,j]* c

Parameters:

A - the matrix to perform he update on

j - the row to update

start - the first index of the row to update from (inclusive)

to - the last index of the row to update (exclusive)

c - the constant to multiply each element by

multCol

public static void multCol(Matrix A,
                           int j,
                           double c)

Updates the values of column j in the given matrix to be A[:,j] = A[:,j]* c

Parameters:

A - the matrix to perform he update on

j - the row to update

c - the constant to multiply each element by

divCol

public static void divCol(Matrix A,
                          int j,
                          int start,
                          int to,
                          double c)

Updates the values of column j in the given matrix to be A[:,j] = A[:,j]/c

Parameters:

A - the matrix to perform he update on

j - the row to update

start - the first index of the row to update from (inclusive)

to - the last index of the row to update (exclusive)

c - the constant to divide each element by

divCol

public static void divCol(Matrix A,
                          int j,
                          double c)

Updates the values of column j in the given matrix to be A[:,j] = A[:,j]/c

Parameters:

A - the matrix to perform he update on

j - the row to update

c - the constant to divide each element by

divCol

public static void divCol(Matrix A,
                          int j,
                          int start,
                          int to,
                          Vec c)

Updates the values of column j in the given matrix to be A[:,j] = A[:,j]/c[j].
The Matrix A and vector c do not need to have the same dimensions, so long as they both have indices in the given range.

Parameters:

A - the matrix to perform he update on

j - the row to update

start - the first index of the row to update from (inclusive)

to - the last index of the row to update (exclusive)

c - the vector of values to pairwise divide the elements of A by

divCol

public static void divCol(Matrix A,
                          int j,
                          int start,
                          int to,
                          double[] c)

Updates the values of column j in the given matrix to be A[:,j] = A[:,j]/c[j].
The Matrix A and array c do not need to have the same dimensions, so long as they both have indices in the given range.

Parameters:

A - the matrix to perform he update on

j - the row to update

start - the first index of the row to update from (inclusive)

to - the last index of the row to update (exclusive)

c - the array of values to pairwise divide the elements of A by

addMultRow

public static void addMultRow(Matrix A,
                              int i,
                              int start,
                              int to,
                              double t,
                              double[] c)

Updates the values of row i in the given matrix to be A[i,:] = A[i,:]+c[:]*t.
The Matrix A and array c do not need to have the same dimensions, so long as they both have indices in the given range.

Parameters:

A - the matrix to perform he update on

i - the row to update

start - the first index of the column to update from (inclusive)

to - the last index of the column to update (exclusive)

t - the constant to multiply all elements of c by

c - the array of values to pairwise multiply by t before adding to the elements of A

addMultRow

public static void addMultRow(Matrix A,
                              int i,
                              int start,
                              int to,
                              double t,
                              Vec c)

Updates the values of row i in the given matrix to be A[i,:] = A[i,:]+c[:]*t.
The Matrix A and array c do not need to have the same dimensions, so long as they both have indices in the given range.

Parameters:

A - the matrix to perform he update on

i - the row to update

start - the first index of the column to update from (inclusive)

to - the last index of the column to update (exclusive)

t - the constant to multiply all elements of c by

c - the array of values to pairwise multiply by t before adding to the elements of A

addMultCol

public static void addMultCol(Matrix A,
                              int j,
                              int start,
                              int to,
                              double t,
                              double[] c)

Updates the values of column j in the given matrix to be A[:,j] = A[:,j]+c[:]*t.
The Matrix A and array c do not need to have the same dimensions, so long as they both have indices in the given range.

Parameters:

A - the matrix to perform he update on

j - the row to update

start - the first index of the row to update from (inclusive)

to - the last index of the row to update (exclusive)

t - the constant to multiply all elements of c by

c - the array of values to pairwise multiply by t before adding to the elements of A

addMultCol

public static void addMultCol(Matrix A,
                              int j,
                              int start,
                              int to,
                              double t,
                              Vec c)

Updates the values of column j in the given matrix to be A[:,j] = A[:,j]+c[:]*t.
The Matrix A and vector c do not need to have the same dimensions, so long as they both have indices in the given range.

Parameters:

A - the matrix to perform he update on

j - the row to update

start - the first index of the row to update from (inclusive)

to - the last index of the row to update (exclusive)

t - the constant to multiply all elements of c by

c - the vector of values to pairwise multiply by t before adding to the elements of A

swapCol

public static void swapCol(Matrix A,
                           int j,
                           int k,
                           int start,
                           int to)

Swaps the columns j and k in the given matrix.

Parameters:

A - the matrix to perform he update on

j - the first column to swap

k - the second column to swap

start - the first row that will be included in the swap (inclusive)

to - the last row to be included in the swap (exclusive)

swapCol

public static void swapCol(Matrix A,
                           int j,
                           int k)

Swaps the columns j and k in the given matrix.

Parameters:

A - the matrix to perform he update on

j - the first column to swap

k - the second column to swap

swapRow

public static void swapRow(Matrix A,
                           int j,
                           int k,
                           int start,
                           int to)

Swaps the rows j and k in the given matrix.

Parameters:

A - the matrix to perform he update on

j - the first row to swap

k - the second row to swap

start - the first column that will be included in the swap (inclusive)

to - the last column to be included in the swap (exclusive)

swapRow

public static void swapRow(Matrix A,
                           int j,
                           int k)

Swaps the columns j and k in the given matrix.

Parameters:

A - the matrix to perform he update on

j - the first column to swap

k - the second column to swap

fillRow

public static void fillRow(Matrix A,
                           int i,
                           int from,
                           int to,
                           double val)

Fills the values in a row of the matrix

Parameters:

A - the matrix in question

i - the row of the matrix

from - the first column index to fill (inclusive)

to - the last column index to fill (exclusive)

val - the value to fill into the matrix

fillCol

public static void fillCol(Matrix A,
                           int j,
                           int from,
                           int to,
                           double val)

Fills the values in a column of the matrix

Parameters:

A - the matrix in question

j - the column of the matrix

from - the first row index to fill (inclusive)

to - the last row index to fill (exclusive)

val - the value to fill into the matrix