max value of N arrays

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simone zappalà
simone zappalà el 25 de Mayo de 2022
Respondida: Voss el 25 de Mayo de 2022
I've several arrays, all are 130 rows and 1 column with different numbers created from a for cycle, so every row is the result of a for cycle i=1:130. I want to know how i can take the max value between these arrays for every cycle. At the end i need an array with 130 rows and one column each row is the max value between all the arrays.
example
x=[1,3,6,9]
y=[2,4,5,8]
max(x,y)=[2,4,6,9]

Respuesta aceptada

Voss
Voss el 25 de Mayo de 2022
You say they're column vectors in the description, but the example uses row vectors. It doesn't really matter, you can do it either way:
x=[1,3,6,9]; % row vectors given
y=[2,4,5,8];
z=[0,5,1,2];
max([x;y;z],[],1) % row vector result
ans = 1×4
2 5 6 9
x=[1;3;6;9]; % column vectors given
y=[2;4;5;8];
z=[0;5;1;2];
max([x y z],[],2) % column vector result
ans = 4×1
2 5 6 9

Más respuestas (1)

MJFcoNaN
MJFcoNaN el 25 de Mayo de 2022
You can concatenate all the vectors and use function of max by the given dimension. For example
x=[1,3,6,9].';
y=[2,4,5,8].';
A=[x, y]
A = 4×2
1 2 3 4 6 5 9 8
m=max(A, [], 2)
m = 4×1
2 4 6 9

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