To find Maximum value and minimum value for each group of four rows for a 180*1 matrix

Say I have a 180x1 matrix. I have to find the max and min value of each 12 rows. e.g, max min value of 1-12th row and 13th to 24th row and so on..

Answer 1

[KSSV]

A = rand(180,1) ; 
B = reshape(A,12,[])' ;

themax = max(B) ;
themin = min(B) ; 

Answer 2

[Rik]

Easy if you reshape the vector to an array:

data=rand(180,1);
data_=reshape(data,12,[]);
max(data_,[],1)

ans = 1×15

0.9353 0.9149 0.8658 0.9909 0.9962 0.9774 0.9912 0.9617 0.9288 0.8957 0.9471 0.8812 0.9200 0.8054 0.8691

min(data_,[],1)

ans = 1×15

0.0552 0.0024 0.0409 0.0265 0.0392 0.0085 0.0041 0.0097 0.2144 0.0208 0.0942 0.1048 0.1427 0.0291 0.0015