/**
* Augment a matrix
* An augmented matrix is a matrix obtained by appending the columns of two given matrices
*
* [1, 2, 3]
* A = [2, 3, 4]
* [3, 4, 5]
*
* [4]
* B = [5]
* [6]
*
* [1, 2, 3 | 4]
* (A|B) = [2, 3, 4 | 5]
* [3, 4, 5 | 6]
*
* @param Matrix $B Matrix columns to add to matrix A
*
* @return Matrix
*
* @throws MatrixException if matrices do not have the same number of rows
*/
public function augment(Matrix $B) : Matrix
{
if ($B->getM() !== $this->m) {
throw new Exception\MatrixException('Matrices to augment do not have the same number of rows');
}
$m = $this->m;
$A = $this->A;
$B = $B->getMatrix();
$⟮A∣B⟯ = [];
for ($i = 0; $i < $m; $i++) {
$⟮A∣B⟯[$i] = array_merge($A[$i], $B[$i]);
}
return MatrixFactory::create($⟮A∣B⟯);
}
