Measurement graph
=================

``MGraph`` connects logical measurement positions, device instances,
frequency-dependent conditions, switching actions, and path corrections.
New applications should pass an explicit condition context and disable the
caller-frame compatibility fallback.

The bilingual :doc:`German <../de/configuration/dot>` and :doc:`English
<../en/configuration/dot>` DOT references explain file syntax, attributes,
condition contexts, persistence, and validation workflows.

.. autoclass:: mpylab.tools.mgraph.MGraph
   :members:
      ApplyContext,
      ReapplyContext,
      CheckContextState,
      PollContextState,
      EvaluateConditions,
      check_paths,
      CreateDevices,
      Init_Devices,
      Quit_Devices,
      RFOn_Devices,
      RFOff_Devices,
      SetFreq_Devices,
      get_path_correction,
      get_path_corrections,
      prepare_path_correction,
      apply_path_correction

Explicit context results and errors
-----------------------------------

.. autoclass:: mpylab.tools.mgraph.GraphContextResult
   :members:

.. autoclass:: mpylab.tools.mgraph.GraphContextError

.. autoclass:: mpylab.tools.mgraph.GraphStateMismatchError
   :members:

Graph validation
----------------

.. autoclass:: mpylab.tools.mgraph.GraphPathCheckPoint
   :members:

.. autoclass:: mpylab.tools.mgraph.GraphPathCheckReport
   :members:

.. autoclass:: mpylab.tools.mgraph.GraphInputError

.. autoclass:: mpylab.tools.mgraph.GraphValidationError

.. autoclass:: mpylab.tools.mgraph.ConditionContextError

.. autoclass:: mpylab.tools.mgraph.LegacyConditionContextWarning

Leveling
--------

.. autoclass:: mpylab.tools.mgraph.LevelingResult
   :members:

.. autoclass:: mpylab.tools.mgraph.LevelingDeviceError

.. autoclass:: mpylab.tools.mgraph.LevelingDataError

The graph guide explains switched paths and correction semantics in
:doc:`../en/framework/path-corrections`.