Swing action graph
I do the swing action 3 times and get the at-graphs on right-hand side. The time is from right to left. The amplitude is the accelration of the sensor
The procedure is that first I need to hold the wiimote vertically and then swing it down. Therefore the red line should be higher than others before the action. The peak-value of the red line should be the swing effort.
The half-cycle of the Red is the time used for the action.
The value of X,Z mayuse to calculate the angle of the swing action.
Then I do it one more time with horizontal swing, the result is similiar, only the shape of X and Z line is exchanged.