:py:mod:`ccs_fit.fitting.spline_functions`
==========================================

.. py:module:: ccs_fit.fitting.spline_functions

.. autoapi-nested-parse::

   This module contains functions for spline construction, evaluation and output.



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

Classes
~~~~~~~

.. autoapisummary::

   ccs_fit.fitting.spline_functions.Twobody
   ccs_fit.fitting.spline_functions.Onebody




Attributes
~~~~~~~~~~

.. autoapisummary::

   ccs_fit.fitting.spline_functions.logger


.. py:data:: logger

   

.. py:class:: Twobody(name, dismat, distmat_forces, Rcut, range_center=None, range_width=None, search_points=None, Swtype='rep', Rmin=None, Resolution=0.1, const_type='mono', search_mode='full')

   Twobody class that describes properties of an Atom pair.

   .. py:method:: merge_intervals()


   .. py:method:: dissolve_interval()


   .. py:method:: get_const()


   .. py:method:: switch_const(n_switch)


   .. py:method:: spline_construction()

      This function constructs the matrices A, B, C, D.


   .. py:method:: get_v()

      Constructs the v matrix.

      :returns: **ndarray** -- The v matrix for a pair.
      :rtype: matrix


   .. py:method:: get_v_forces(indices)

      Constructs the v matrix.

      :returns: The v matrix for a pair.
      :rtype: ndarray


   .. py:method:: get_spline_coeffs()


   .. py:method:: get_expcoeffs()

      Calculates coefficients of exponential function.

      :param aa:
      :type aa: float
      :param bb:
      :type bb: float
      :param cc:
      :type cc: float
      :param r0:
      :type r0: float

      :returns: beta (float):
                gamma (float):
      :rtype: alpha (float)



.. py:class:: Onebody(name, stomat, epsilon_supported=True, epsilon=0.0)

   Onebody class that describes properties of an atom.