Trigonal prismatic local order parameter?


I’m getting familiar with some crystal representations and I’m very interested on CrystalNNFingerprint implemented by matminer with pymatgen’s CrystalNN (as explained here).

I was wondering about the absence of order parameter for trigonal prismatic local environment, as this is a very common environment on 2D TMDCs.

It would be great to know how difficult is to implement by myself (or should I simply put it as a issue on pymatgen’s github?)

Thank you!