def NumericPsdGetXY(self):
    try:
        return (self._PsdNumericX, self._PsdNumericY)
    except:
        print('Error in RoughnessMaker.NumericPsdGetXY. Maybe the data file was not properly loaded')
def NumericPsdGetXY(self):
    try:
        return (self._PsdNumericX, self._PsdNumericY)
    except:
        print('Error in RoughnessMaker.NumericPsdGetXY. Maybe the data file was not properly loaded')