Hi Chuck, On Mon, Mar 8, 2021, at 02:19, Chuck Witt wrote:

I am thinking of contributing a real spherical harmonic function (scipy.special.real_sph_harm) to complement the existing spherical harmonic routine (scipy.special.sph_harm).

The real spherical harmonics span the same space as traditional spherical harmonics but can be more useful in some cases, particularly when the function to be expanded is purely real. They are simple to compute from the traditional spherical harmonics:

https://en.wikipedia.org/wiki/Spherical_harmonics#Real_form.

Would this contribution be of interest?

I think those would be useful, as evidenced by their use in DiPy [0]. Perhaps it's worth checkout out what else DiPy currently implements that would be applicable to a wider audience. Best regards, Stéfan [0] https://www.dipy.org/documentation/1.0.0./reference/dipy.reconst/#module-dip...