def set_XRef(self, X=None, indtX=None, indtXlamb=None):
        """ Reset the reference X

        Useful if to replace channel indices by a time-vraying quantity
        e.g.: distance to the magnetic axis

        """
        out = self._checkformat_inputs_XRef(X=X, indtX=indtX,
                                            indXlamb=indtXlamb)
        X, nnch, indtX, indXlamb, indtXlamb = out
        self._ddataRef['X'] = X
        self._ddataRef['nnch'] = nnch
        self._ddataRef['indtX'] = indtX
        self._ddataRef['indtXlamb'] = indtXlamb
        self._ddata['uptodate'] = False
def set_XRef ( self , X = None , indtX = None , indtXlamb = None ) : out = self . _checkformat_inputs_XRef ( X = X , indtX = indtX , indXlamb = indtXlamb ) X , nnch , indtX , indXlamb , indtXlamb = out self . _ddataRef [ 'X' ] = X self . _ddataRef [ 'nnch' ] = nnch self . _ddataRef [ 'indtX' ] = indtX self . _ddataRef [ 'indtXlamb' ] = indtXlamb self . _ddata [ 'uptodate' ] = False
Reset the reference X

        Useful if to replace channel indices by a time-vraying quantity
        e.g.: distance to the magnetic axis