(self)
plot data (not implemented)
plot data (not implemented)
plot data ( not implemented )
def plot(self):
        """plot data (not implemented)"""
        print('method BaseDataLogger.plot() is not implemented, to be done in subclass ' + str(type(self)))
def plot ( self ) : print ( 'method BaseDataLogger.plot() is not implemented, to be done in subclass ' + str ( type ( self ) ) )