I want to find repeating pattern in graph, for example in the figure shown below (plz. click on the link, I don't know why it is not displayed), green peaks are repeated at some fixed interval. Here frequency and height of peaks are more or less same, but not exactly same. Here height and frequency are not known, but they are almost same for given repeating pattern.
I have read about motifs and Fourier transformation, but it seems too mathematical. Is there any simpler approach to solve this problem.
