PHP NumPHP\Core NumArray::__toString示例

__toString() public method

Returns a string representing the NumArray

Since: 1.0.0

public __toString ( ) : string
return	string

示例#1

文件： Cholesky.php 项目： buaa556/gongkesheng

 /**
  * @param InputInterface $input
  * @param OutputInterface $output
  *
  * @SuppressWarnings(PHPMD.UnusedFormalParameter)
  */
 protected function execute(InputInterface $input, OutputInterface $output)
 {
     $matrixA = new NumArray([[49, -525, 7, -315], [-525, 6921, -3279, 3483], [7, -3279, 8178, -328], [-315, 3483, -328, 624556]]);
     $output->writeln('<comment>Matrix A:</comment>');
     $output->writeln($matrixA->__toString());
     $output->writeln('<info>Cholesky:</info>');
     $time = microtime(true);
     $matrixL = LinAlg::cholesky($matrixA);
     $timeDiff = microtime(true) - $time;
     $output->writeln($matrixL->__toString());
     $output->writeln('<info>Time for calculation: ' . $timeDiff . ' sec</info>');
 }

示例#2

文件： Inverse.php 项目： raslin/NumPHP

 /**
  * @param InputInterface $input
  * @param OutputInterface $output
  *
  * @SuppressWarnings(PHPMD.UnusedFormalParameter)
  */
 protected function execute(InputInterface $input, OutputInterface $output)
 {
     $matrix = new NumArray([[-3, 4, 7 / 6], [2, 0.1, 0], [23, -5, 8]]);
     $output->writeln('<comment>Matrix:</comment>');
     $output->writeln($matrix->__toString());
     $output->writeln('<info>Inverse:</info>');
     $time = microtime(true);
     $inv = LinAlg::inv($matrix);
     $timeDiff = microtime(true) - $time;
     $output->writeln($inv->__toString());
     $output->writeln('<info>Time for calculation: ' . $timeDiff . ' sec</info>');
 }

示例#3

文件： GaussianElimination.php 项目： buaa556/gongkesheng

 /**
  * @param InputInterface $input
  * @param OutputInterface $output
  * @return int|null|void
  *
  * @SuppressWarnings(PHPMD.UnusedFormalParameter)
  */
 protected function execute(InputInterface $input, OutputInterface $output)
 {
     $matrixA = new NumArray([[11.0, 44.0, 1.0], [0.1, 0.4, 3.0], [0.0, 1.0, -1.0]]);
     $output->writeln('<comment>Matrix A:</comment>');
     $output->writeln($matrixA->__toString());
     $vectorB = new NumArray([1.0, 1.0, 1.0]);
     $output->writeln('<comment>Vector b:</comment>');
     $output->writeln($vectorB->__toString());
     $time = microtime(true);
     $gaussianResult = self::gaussianEliminationPivoting($matrixA, $vectorB);
     $xVector = self::backSubstitution($gaussianResult['M'], $gaussianResult['b']);
     $timeDiff = microtime(true) - $time;
     $output->writeln('<info>Solution of A*x=b?</info>');
     $output->writeln('<comment>Vector x:</comment>');
     $output->writeln($xVector->__toString());
     $output->writeln('<info>Time for calculation: ' . $timeDiff . ' sec</info>');
 }

示例#4

文件： LUDecomposition.php 项目： raslin/NumPHP

 /**
  * @param InputInterface $input
  * @param OutputInterface $output
  *
  * @SuppressWarnings(PHPMD.UnusedFormalParameter)
  */
 protected function execute(InputInterface $input, OutputInterface $output)
 {
     $matrixA = new NumArray([[1, 6, 1], [2, 3, 2], [4, 2, 1]]);
     $output->writeln('<comment>Matrix A:</comment>');
     $output->writeln($matrixA->__toString());
     $output->writeln('<info>LU decomposition</info>');
     $time = microtime(true);
     list($matrixP, $matrixL, $matrixU) = LinAlg::lud($matrixA);
     $timeDiff = microtime(true) - $time;
     $output->writeln('<comment>Matrix P:</comment>');
     $output->writeln($matrixP->__toString());
     $output->writeln('<comment>Matrix L:</comment>');
     $output->writeln($matrixL->__toString());
     $output->writeln('<comment>Matrix U:</comment>');
     $output->writeln($matrixU->__toString());
     $output->writeln('<info>Time for calculation: ' . $timeDiff . ' sec</info>');
 }