sersic.py 文件源码

def bm_bn_estimate(nn):
    "Guess for bn constant defined by B+M"
    if np.iterable(nn): return np.array([bm_bn_estimate(n) for n in nn])
    est = 0.87*nn-0.15
    if nn < 0.2: est = 0.01*(nn/0.1)**4
    return est