Re: How to extract sequenced data from an array?

[Doug Stewart]

On Wed, Dec 22, 2010 at 10:09 AM, new_user <address@hidden> wrote:

> some kind of fourier analysis to look for the periodicity?

Well, if my name suggests association... ;)
I'll try to open some books and reply with solution if I find it
(FYI, I'm just a meteorology student)

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try xcorr

help xcorr

Autocorrelation ( if I remember correctly) makes a copy of your data and then tries shifting and overlapping your data with the copy. I then looks for a correlation between the 2 for each overlap  and then reports this correlation, if you plot this correlation vector you will find a peek at the periodicity points 

Doug Stewart