Relation or Pattern between curves
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Star Strider 2023-5-17
The plot appears to be incomplete.
What do the curves look like between 0 (or whatever the minimum independent value is) and 150? What are the independent variable values?
The parts of the curves displayed appear to be inverted Logistic function curves, so one option might be to estimate the parameters of each of them and then compare those parameters.
That objective function could be —
lgfcn = @(b,x) b(1) - b(2)./(1 + exp(-b(3).*(x-b(4))));
Image Analyst 2023-5-17
You forgot to attach your data! It should be possible to fit any particular curve to some sigmoid kind of curve, if you have the model for it, with fitnlm. I'm attaching some demos using various models so you can see how it's done.