pylops.Flip¶
-
class
pylops.
Flip
(N, dims=None, dir=0, dtype='float64')[source]¶ Flip along an axis.
Flip a multi-dimensional array along a specified direction
dir
.Parameters: Notes
The Flip operator flips the input model (and data) along any chosen direction. For simplicity, given a one dimensional array, in forward mode this is equivalent to:
\[y[i] = x[N-1-i] \quad \forall i=0,1,2,\ldots,N-1\]where \(N\) is the lenght of the input model. As this operator is self-adjoint, \(x\) and \(y\) in the equation above are simply swapped in adjoint mode.
Attributes: Methods
__init__
(N[, dims, dir, dtype])Initialize this LinearOperator. adjoint
()Hermitian adjoint. apply_columns
(cols)Apply subset of columns of operator cond
([uselobpcg])Condition number of linear operator. conj
()Complex conjugate operator div
(y[, niter])Solve the linear problem \(\mathbf{y}=\mathbf{A}\mathbf{x}\). dot
(x)Matrix-matrix or matrix-vector multiplication. eigs
([neigs, symmetric, niter, uselobpcg])Most significant eigenvalues of linear operator. matmat
(X)Matrix-matrix multiplication. matvec
(x)Matrix-vector multiplication. rmatmat
(X)Matrix-matrix multiplication. rmatvec
(x)Adjoint matrix-vector multiplication. todense
([backend])Return dense matrix. toimag
([forw, adj])Imag operator toreal
([forw, adj])Real operator tosparse
()Return sparse matrix. trace
([neval, method, backend])Trace of linear operator. transpose
()Transpose this linear operator.