How do i find max value between 1 and 13 column of 1001 columns.

t = 0:1/100:10;
x = 5*sin(2*pi*5*t) + 3*cos(2*pi*t)

x = 1×1001

3.0000 4.5392 5.9153 6.9919 7.6610 7.8532 7.5446 6.7596 5.5678 4.0781 2.4271 0.7665 -0.7520 -1.9914 -2.8430 -3.2366 -3.1478 -2.5998 -1.6616 -0.4407 0.9271 2.2912 3.5011 4.4211 4.9437 5.0000 4.5669 3.6691 2.3768 0.7990

I want to find max value between 1 and 13 column after that between 14 and 27 so on to 1001.

Answer 1

[KSSV]

x = rand(1,1001) ;
y = reshape(x,[],13) ;  % reshape 
iwant = max(y,[],2) ;  % get max 

[Fehim Kadioglu]

[Fehim Kadioglu]

This is the figure of x, i meant i want red points values, i have been trying but couldnt figure it out

[KSSV]

For this you cannot reshape and do it. Read about findpeaks. Also have a look on envelope.

[Fehim Kadioglu]

Okay, thanks for responding.