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

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Joydeb Saha
Joydeb Saha 2021-7-27
回答： KSSV 2021-7-27
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..

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KSSV
KSSV 2021-7-27
A = rand(180,1) ;
B = reshape(A,12,[])' ;
themax = max(B) ;
themin = min(B) ;

更多回答（1 个）

Rik
Rik 2021-7-27
Ran in:
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

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