scipy.sparse.linalg.LinearOperator.

rmatvec

LinearOperator.rmatvec(x)

Adjoint matrix-vector multiplication.

Applies A^H to x, where A is an M x N linear operator (or batch of linear operators) and x is a row vector (or batch of such vectors).

Parameters:

x{matrix, ndarray}

An array with shape (..., M) representing a row vector (or batch of row vectors), or an array with shape (M, 1) representing a column vector.

Added in version 1.18.0: A FutureWarning is now emitted for column vector input of shape (M, 1), for which an array with shape (N, 1) is returned. rmatmat can be called instead for identical behaviour on such input.

Returns:

y{matrix, ndarray}

An array with shape (..., N).

Notes

This method wraps the user-specified rmatvec routine or overridden _rmatvec method to ensure that y has the correct shape and type.