|Local maxima (=crests) and local minima (= troughs) are identified in
a recorded wave data series. These form the turning points, which
can be extracted and analysed further to give wave cycles, wave lengths,
|Rainflow cycles are identified. Small cycles can be removed by
means of rainflow filtering. The figure shows rainflow cycles with
amplitude exceeding one standard deviation of the wave data.
|A cycle plot shows pairs of maxima and minima as points in the plane.|