nifty8.operators.chain_operator module

class ChainOperator(ops, _callingfrommake=False)

Bases: LinearOperator

Class representing chains of operators.

Notes

This operator has to be called using the make method.

__init__(ops, _callingfrommake=False)

__repr__()

Return repr(self).

apply(x, mode)

Applies the Operator to a given x, in a specified mode.

Parameters:

• x (nifty8.field.Field) – The input Field, defined on the Operator’s domain or target, depending on mode.

• mode (int) –

  • TIMES: normal application

  • ADJOINT_TIMES: adjoint application

  • INVERSE_TIMES: inverse application

  • ADJOINT_INVERSE_TIMES or INVERSE_ADJOINT_TIMES: adjoint inverse application

Returns:

The processed Field defined on the Operator’s target or domain, depending on mode.

Return type:

nifty8.field.Field

static make(ops)

Build a ChainOperator (or something simpler if possible), a sequence of concatenated LinearOperators.

Parameters:

ops (list of LinearOperator) – Individual operators of the chain.

static simplify(ops)