detecting peptide plane flips

[Ron Ayoub]

How about a feature for detecting peptide plane flips? I understand it can be calculated from the torsion angles but I mention it just in case this feature already exists that I am not aware of and just in case there is more to it than a simple calculation based on torsion angles.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2374056/