shape_fitter.py 文件源码

def shape(xs, center, amplitude, sigma, gamma):
        norm = (amplitude) / (sigma * sqrt(2 * pi)) * \
            exp(-((xs - center) ** 2) / (2 * sigma ** 2))
        skew = (1 + erf((gamma * (xs - center)) / (sigma * sqrt(2))))
        return norm * skew