Source code for cvxpy.atoms.affine.vec

"""
Copyright 2013 Steven Diamond

This file is part of CVXPY.

CVXPY is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

CVXPY is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with CVXPY.  If not, see <http://www.gnu.org/licenses/>.
"""

from cvxpy.expressions.expression import Expression
from cvxpy.atoms.affine.reshape import reshape


[docs]def vec(X): """Flattens the matrix X into a vector in column-major order. Parameters ---------- X : Expression or numeric constant The matrix to flatten. Returns ------- Expression An Expression representing the flattened matrix. """ X = Expression.cast_to_const(X) return reshape(X, (X.size,))