Periodicity of a series of points

Question

I have a series of 2-D points. I want to analyze if there is any pattern in this series. Also, if the series is somehow repeating, can I extract a smaller series of points to analyze instead of the complete list of points?

Thanks.

Answer 1

Suggest you calculate the autocorrelation over all points, that should give you a good measure of periodicity.

See for introduction here>>>

or general literature on signal processing or stochastics.

In general the more points you include, the more reliable your result might be.