Lapack::singularValues

(PECL lapack >= 0.1.0)

Calculated the singular values of a matrix

public static array Lapack::singularValues ( array $a )

Calculate the singular values of the matrix A.

Parameters:

The matrix to calculate the singular values for

Returns:

The singular values

Examples:

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);

    ?>

Links:

http://php.net/manual/en/lapack.singularvalues.php

doc_php

2016-02-24 16:02:24

Comments