Lapack::singularValues
(PECL lapack >= 0.1.0)
Lapack::singularValues — Calculated the singular values of a matrix
Description
public static array Lapack::singularValues
( array
$a
)Calculate the singular values of the matrix A.
Parameters
-
a -
The matrix to calculate the singular values for
Return Values
The singular values
Examples
Example #1 Using Lapack::singularValues():
<?php
$a = array(
array( 7.52, -1.10, -7.95, 1.08 ),
array(-0.76, 0.62, 9.34, -7.10 ),
array( 5.13, 6.62, -5.66, 0.87 ),
array(-4.75, 8.52, 5.75, 5.30 ),
array( 1.33, 4.91, -5.49, -3.52 ),
array(-2.40, -6.77, 2.34, 3.95 ),
);
$result = Lapack::singularValues($a);
?>
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- Функции по категориям
- Индекс функций
- Справочник функций
- Математические расширения
- Lapack
- Функция Lapack::eigenValues() - This function returns the eigenvalues for a given square matrix
- Функция Lapack::identity() - Return an identity matrix
- Функция Lapack::leastSquaresByFactorisation() - Calculate the linear least squares solution of a matrix using QR factorisation
- Функция Lapack::leastSquaresBySVD() - Solve the linear least squares problem, using SVD
- Функция Lapack::pseudoInverse() - Calculate the inverse of a matrix
- Функция Lapack::singularValues() - Calculated the singular values of a matrix
- Функция Lapack::solveLinearEquation() - Solve a system of linear equations
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