I have two sets of similar simulation data but there is a 360 degree shift between the phases of the two. It doesn't appear to me to be a phase unwrapping problem, and the data is almost completely identical. This isn't a rare occurence and I can't figure out why it happens, or why it sometimes doesn't. A simplified vi with the data stored as defaults in the controls is included. I took away all other subvi's to make it as clear as possible. I need to get this under control because I need to move away from the simulation and implement it in the real world.