I have a trajectory (cartesian) on a timeline (frames) and I need to find abrupt changes in trajectory, i.e. almost 180º. I found this: https://uk.mathworks.com/matlabcentral/answers/177523-detecting-path-trajectory-turns-in-tracking-data
but that script example doesn't seem to work very well for me (select frames in a straight line…) and I don't understand it well enough to fix it.
I have attached a example dataset with 3 columns: x, y (coordinates), frame nb (time). On this example, the first abrupt chang of trajectory should be found at around frame # 37.
I would be very grateful for any help!