xopto.pf.mhg module

class MHg(g: float, b: float)

Bases: xopto.pf.pfbase.PfBase

Modified Henyey-Greenstein scattering phase function.

Parameters

• g (float) – Anisotropy factor.

• b (float) – Fractional contribution of the Henyey-Greenstein scattering phase function.

Examples

Modified Henyey-Greenstein scattering phase function fo anisotropy factors g = {0, 0.3 0.5, 0.8, 0.9, 0.95} and b=0.5.

>>> import numpy as np
>>> from matplotlib import pyplot as pp
>>>
>>> cos_theta = np.linspace(-1.0, 1.0, 1000)
>>>
>>> pp.figure()
>>> for g in [0.0, 0.3, 0.5, 0.8, 0.9, 0.95]:
>>>     pp.semilogy(cos_heta, MHg(g, 0.5)(cos_theta), label='b=0.5, g={}'.format(g))
>>> pp.legend()

fastg(n: int, **kwargs) → float

Overloads the PfBase.fastg() method of the base class with an analytical solution.

fastgs(last: int, **kwargs) → numpy.ndarray

Overloads the PfBase.fastgs() method of the base class with an analytical olution.

g(n: int) → float

Overloads the PfBase.g() method of the base class with an analytical solution.

gs(last: int) → numpy.ndarray

Overloads the PfBase.gs() method of the base class with an analytical solution.