code: def _massage_data(self):
          
          self._xdata_massaged, self._ydata_massaged, self._eydata_massaged = self.get_processed_data()
          
  #        # Create the odr data.
  #        self._odr_datas = []
  #        for n in range(len(self._xdata_massaged)):
  #            # Only exdata can be None; make sure it's zeros at least.
  #            ex = self._exdata_massaged[n]
  #            if ex == None: ex = _n.zeros(len(self._eydata_massaged[n]))
  #            self._odr_datas.append(_odr.RealData(self._xdata_massaged[n],
  #                                                 self._ydata_massaged[n], 
  #                                                 sx=ex, 
  #                                                 sy=self._eydata_massaged[n]))
          return self
docs: Processes the data and stores it.