How to fit a fluctuation data with change point algorithm?

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Malek Karaim

Are you looking to find the points at which the intensitycrosses Zero (of course after subtracting mean) i.e. to detect a step or you want actually to fit the data curve ?

Vicent Teruel Martí

You can use changepoint library of the R package. It is a useful and well-founded algorithm.

https://cran.r-project.org/web/packages/changepoint/index.html

Rajdeep Chowdhury

Hey Malek, Thanks for your reply. I want to actually fit the data curve.

Rayane El Sibai

The Curve Fitting Toolbox provided in Matlab can help you to fit a curve to your data.