:py:mod:`pygsti.models.layerrules`
==================================

.. py:module:: pygsti.models.layerrules

.. autoapi-nested-parse::

   Defines the LayerLizard class and supporting functionality.






Module Contents
---------------

Classes
~~~~~~~

.. autoapisummary::

   pygsti.models.layerrules.LayerRules




.. py:class:: LayerRules


   Bases: :py:obj:`pygsti.baseobjs.nicelyserializable.NicelySerializable`

   Rules for composing a layer operation from the elements stored within a model.

   A :class:`LayerRules` object serves as an intermediary between a :class:`ImplicitModel`
   object and a :class:`ForwardSimulator`.  It contains the logic for creating
   layer operations based on the partial/fundamental operation "blocks" stored within the
   model.  Since different models hold different operation blocks, layer rules are usually
   tailored to a specific models.

   .. py:method:: prep_layer_operator(model, layerlbl, cache)

      Create the operator corresponding to `layerlbl`.

      Parameters
      ----------
      layerlbl : Label
          A circuit layer label.

      Returns
      -------
      State


   .. py:method:: povm_layer_operator(model, layerlbl, cache)

      Create the operator corresponding to `layerlbl`.

      Parameters
      ----------
      layerlbl : Label
          A circuit layer label.

      Returns
      -------
      POVM or POVMEffect


   .. py:method:: operation_layer_operator(model, layerlbl, cache)

      Create the operator corresponding to `layerlbl`.

      Parameters
      ----------
      layerlbl : Label
          A circuit layer label.

      Returns
      -------
      LinearOperator