Issues with data recorded from MetamotionC
I recorded data with my MetaMotionC in quaternions and I am trying to convert them back in Euler angles with Matlab. But, I have a problem with that : The values for some “roll” data values are given in complex numbers and not in a real angle value.
I checked the quaternions data file and tried to make the sum of the power every terms (w, x, y, and z). Normally I should have “1”. But, for some values I have more or less than 1 (It can from 1.19 to 0.82).
I think this is the reason why I have complex numbers in my Euler angles. Do you confirm ?
I tried it with two MetaMotionC and for both of them I have this problem.
Could you help me about that ? Thanks in advance !