Finding minimums and maximums of repetitive numbers in a matrix

Hello,

Would you please assist me to find minimums and maximums of repetitive numbers in the attached matrix (EXCEL file). Actually, corresponding values of red ovals and green and blue arrows are different events recorded as biomechanical data during human gait. I am a beginner and need explanation to understand how to calculate the corresponding values. Thank you very much.

[Arthur Roué]

Look into functions islocalmax and islocalmin for a start

[Vahid Esmaeili]

Thank you so much.

Answer 1

[David Hill]

Might need to filter slightly to smooth data to obtain consistent results.

redA=islocalmax(a)&a>.1;
greenA=islocalmin(diff([a(1);a]))&a<.03;
blueA=islocalmin(a)&a<.03

[Vahid Esmaeili]

Thnak you so much for your answer. I am wondering which kind of filtering you mean? Actually, the data is recorded at 60 Hz.

[David Hill]

Your filter could be as simple as:

a=movmean(a,4);

[Vahid Esmaeili]

Thank you very much for your favor.