measurement_gain_mat
====================

.. currentmodule:: pyarts3.workspace

.. attribute:: Workspace.measurement_gain_mat
   :type: ~pyarts3.arts.Matrix

   Contribution function (or gain) matrix.

   This matrix is the partial derivative of the retrieved state vector with respect to the :attr:`~pyarts3.workspace.Workspace.measurement_vec`.

   Usage: Used and set by inversion methods.




   .. rubric:: Input to workspace methods

   .. hlist::
       :columns: 1

       * :func:`~pyarts3.workspace.Workspace.measurement_averaging_kernelCalc`
       * :func:`~pyarts3.workspace.Workspace.measurement_vec_error_covmat_observation_systemCalc`


   .. rubric:: Output from workspace method

   .. hlist::
       :columns: 1

       * :func:`~pyarts3.workspace.Workspace.OEM`


   .. rubric:: Related workspace variables

   .. hlist::
       :columns: 2

       * :attr:`~pyarts3.workspace.Workspace.covmat_diagonal_blocks`
       * :attr:`~pyarts3.workspace.Workspace.measurement_vec_error_covmat`
       * :attr:`~pyarts3.workspace.Workspace.model_state_covmat`
       * :attr:`~pyarts3.workspace.Workspace.single_propmat`
       * :attr:`~pyarts3.workspace.Workspace.single_propmat_agenda`
       * :attr:`~pyarts3.workspace.Workspace.single_propmat_jac`
       * :attr:`~pyarts3.workspace.Workspace.single_propmat_jac_path`
       * :attr:`~pyarts3.workspace.Workspace.single_propmat_path`
       * :attr:`~pyarts3.workspace.Workspace.spectral_phamat_spectral`
       * :attr:`~pyarts3.workspace.Workspace.spectral_phamat_spectral_path`
       * :attr:`~pyarts3.workspace.Workspace.spectral_propmat`
       * :attr:`~pyarts3.workspace.Workspace.spectral_propmat_agenda`
       * :attr:`~pyarts3.workspace.Workspace.spectral_propmat_jac`
       * :attr:`~pyarts3.workspace.Workspace.spectral_propmat_jac_path`
       * :attr:`~pyarts3.workspace.Workspace.spectral_propmat_path`
       * :attr:`~pyarts3.workspace.Workspace.spectral_propmat_scat`
       * :attr:`~pyarts3.workspace.Workspace.spectral_propmat_scat_agenda`
       * :attr:`~pyarts3.workspace.Workspace.spectral_propmat_scat_path`
       * :attr:`~pyarts3.workspace.Workspace.spectral_propmat_scat_spectral_agenda`
       * :attr:`~pyarts3.workspace.Workspace.spectral_tramat_bkg`
       * :attr:`~pyarts3.workspace.Workspace.spectral_tramat_cumulative_path`
       * :attr:`~pyarts3.workspace.Workspace.spectral_tramat_jac_path`
       * :attr:`~pyarts3.workspace.Workspace.spectral_tramat_path`

   .. :class:`~pyarts3.arts.Matrix`