Segmenting data based on multiple min and max value

Hello, I have the following xlsx file (x,y). I want to separate every section of the curve ( 4 downard, 4 upward) part separate data file so that I can plot as different curve and merge them. So could anyone please suggest, how can I do segmentation based on multiple minima or maxima.

Thank you

[KSSV]

Did you attach the concerned file? The data in the file is something different.

[infinity]

Hello,

Here is my idea.

First, we can sort the data such that x increases from 0 to 3 if your data have not already been sorted.

Then, we find the maximum value of y for x > 1 if we did not know it.

To find the maximum of y for x within [1 3], you can just

1. store your data with another varibale, let say "temp", in which x > 1.
2. use max fucntion for "temp"

When you have this value, you can use "for" and "if" to split what you want.

Best regards,

Trung

[az]

Thanks Trung, the problem is not all my other data that I have goes a fixed minima like 0 or a fixed maxima, I have to segment data based on local min and max.

Answer 1

[KSSV]

Read about findpeaks. It will give indices and values of the maximas. From the indices you take next and before values.

[az]

Hello , Here is the data file. I have found this website, But I do not know how to calculate slope threshold and Amplitude threshold.

Thankyou all.

Pickfinding