CONAN.models.basefuncRV
=======================

.. py:function:: CONAN.models.basefuncRV(coeff, RVdata, res, useSpline)

   Calculate the baseline function without the RV model

   :param coeff: the coefficients of the parametric polynomial
   :type coeff: array-like
   :param RVdata: data for this RV
   :type RVdata: dict
   :param res: residuals after subtracting the RV model from the RVdata
   :type res: array-like
   :param useSpline: the configuration for the spline fit
   :type useSpline: SimpleNamespace