Calculate the yaw angle change ψ for each of the vertices

is there a simple way to calculate the yaw angle change? attached is my code.

[Adam Danz]

If you make it easier for volunteers to answer the question, you might get more help, quicker. Rather than asking us to download a file, open it in Matlab, read through the code, try to guess at which section you need help with, etc., you could just share the relevant section of code and ask a detailed question.

[random1072]

[Adam Danz]

Where is psi represented in the data? Since this sounds like an assignment, what have you tried and what's not working?