Module « scipy.sparse.linalg »

Fonction aslinearoperator - module scipy.sparse.linalg

Signature de la fonction aslinearoperator

def aslinearoperator(A) 

Description

aslinearoperator.__doc__

Return A as a LinearOperator.

    'A' may be any of the following types:
     - ndarray
     - matrix
     - sparse matrix (e.g. csr_matrix, lil_matrix, etc.)
     - LinearOperator
     - An object with .shape and .matvec attributes

    See the LinearOperator documentation for additional information.

    Notes
    -----
    If 'A' has no .dtype attribute, the data type is determined by calling
    :func:`LinearOperator.matvec()` - set the .dtype attribute to prevent this
    call upon the linear operator creation.

    Examples
    --------
    >>> from scipy.sparse.linalg import aslinearoperator
    >>> M = np.array([[1,2,3],[4,5,6]], dtype=np.int32)
    >>> aslinearoperator(M)
    <2x3 MatrixLinearOperator with dtype=int32>