<p>A common method is to use the <a href="https://uk.mathworks.com/help/signal/ug/find-periodicity-using-autocorrelation.html" rel="nofollow noreferrer">autocorrelation function</a> (ACF).</p>
<p>A description of an application of this technique for finding the rotation periods of stars in Kepler data is given by <a href="https://arxiv.org/abs/1303.6787" rel="nofollow noreferrer">McQuillan et al. (2013)</a>.</p>

CC BY-SA 4.0
2022-10-10T15:50:50.973Z
2022-10-10T15:50:50.973Z
ProfRob
<p>I'm doing some research into how different methods of finding the period with unevenly spaced data compare with each other. So far, I've looked at the Lomb-Scargle and String-Length Minimization. I was wondering if there are any other methods I've missed. Thanks!</p>

CC BY-SA 4.0
2022-10-16T16:38:44.780Z
I should add there may be others - I'm not saying my list of one is exhaustive.
ProfRob
<observational-astronomy><asteroids><data-analysis><variable-star><cepheids>
Other than Lomb-Scargle Periodograms and String Length Minimization, what other methods can be used to find the period of unevenly spaced data?
Zachary Kennedy
# Other than Lomb-Scargle Periodograms and String Length Minimization, what other methods can be used to find the period of unevenly spaced data?

(Asked by: username_0 on 2022-10-10)

I'm doing some research into how different methods of finding the period with unevenly spaced data compare with each other. So far, I've looked at the Lomb-Scargle and String-Length Minimization. I was wondering if there are any other methods I've missed. Thanks!

**Tags:** observational-astronomy, asteroids, data-analysis, variable-star, cepheids

> **Comments:**
> **username_1**: I should add there may be others - I'm not saying my list of one is exhaustive.  

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## 1 answers

### Answer by username_1 on 2022-10-10. Score: 4 | Accepted answer

A common method is to use the [autocorrelation function](https://uk.mathworks.com/help/signal/ug/find-periodicity-using-autocorrelation.html) (ACF).

A description of an application of this technique for finding the rotation periods of stars in Kepler data is given by [McQuillan et al. (2013)](https://arxiv.org/abs/1303.6787).


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