mr.py 文件源码

def plot(self, data, size, newdata=None):
        assert size == 1
        newvalues = None

        R = np.array([np.nan] + [abs(data[i] - data[i + 1]) for i in range(len(data) - 1)])

        if newdata:
            newvalues = newdata

        Rbar = np.nanmean(R)
        Xbar = np.mean(data)

        lclx = Xbar - 3 * (Rbar / d2[2])
        uclx = Xbar + 3 * (Rbar / d2[2])

        return (data, Xbar, lclx, uclx, self._title)