Rainflow Counting Algorithm
17 Feb 2003
04 Apr 2010)
Very fast rainflow cycle counting for MATLAB
% RAINFLOW cycle counting.
% RAINFLOW counting function allows you to extract
% cycle from random loading.
% rf = RAINFLOW(ext)
% rf = RAINFLOW(ext, dt)
% rf = RAINFLOW(ext, extt)
% rf - rainflow cycles: matrix 3xn or 5xn dependend on input,
% rf(1,:) Cycles amplitude,
% rf(2,:) Cycles mean value,
% rf(3,:) Number of cycles (0.5 or 1.0),
% rf(4,:) Begining time (when input includes dt or extt data),
% rf(5,:) Cycle period (when input includes dt or extt data),
% ext - signal points, vector nx1, ONLY TURNING POINTS!,
% dt - sampling time, positive number, when the turning points
% spaced equally,
% extt - signal time, vector nx1, exact time of occurrence of turning points.
% See also SIG2EXT, RFHIST, RFMATRIX, RFPDF3D.
% Copyright (c) 1999-2002 by Adam Nieslony,
% MEX function.