I have some data which looks roughly periodic - is there a nice way to measure this?
This is an example I'm working on and I'd like a metric that I will be able to just threshold to give a decision of yes or no. I was thinking maybe looking into the Fourier domain or looking at correlation. Many thanks.
[NB - I've cross-posted - I've also asked on the stats stack exchange but I think it may be more appropriate here]