CONAN._classes.load_rvs.rescale_data_columns
============================================

.. py:method:: CONAN._classes.load_rvs.rescale_data_columns(method='med_sub', columns='all', verbose=True)

   Function to rescale the data columns of the RVs. This can be important when decorrelating
   the data with polynomials. The operation is not performed on columns 0,1,2. It is only
   performed on columns whose values do not span zero. Function can only be run once on the
   loaded datasets but can be reset by running `load_rvs()` again.

   :param method: can be one of ["med_sub", "rs0to1", "rs-1to1","None"] which subtracts the median,
                  rescales t0 [0-1], rescales to [-1,1], or does nothing, respectively.
                  The default is "med_sub" which subtracts the median from each column.
   :type method: str
   :param columns: list of columns to rescale. default is "all" to consider rescaling all columns (except columns 0,1,2).
                   otherwise, list of column integer number up to 5 e.g columns = [3,4]
   :type columns: list or "all";

   .. attribute:: _rescaled_data

      flag to indicate if the data columns have been rescaled. Default is False.
      config : list;
      list of method used for rescaling each RV data.

      :type: SimpleNamespace;