How to find the maximum value for each 2 rows in an array?

Hello everyone,

I have a 3d array, precip= :,:, 720. in fact 720 is a column. I want to find the maximum value in this column two-by-two in rows. And saving the bigger value and eliminate the smaller one. and do it for all 720-row two-by-two

for example:

1) 54

1) 34

2) 97

2) 21

3) 3

3) 0

to

1) 54 ( 54>34)

2) 97

3) 3

so if the dimension before doing this is precip = :, :, 730, after this work should be precip = :, :, 365.

I wanna practical this for a 3d array which the third dimension is what I talking about.

I'm attaching all my array.

Thank you

Answer 1

[Thiago Henrique Gomes Lobato]

If I understood right you want the maximum element-wise matrix entry between the two matrices that appear in your 3rd dimension in consecutive index, right? If it is this I belive this is the fastest way to do it in Matlab

A = load('my_array.mat');
A = A.the_array;

% Create Array to store the data
NewArray = max(A(:,:,1:2:end),A(:,:,2:2:end)); % Save maximum element-wise element for each matrix between 2 by 2 indexes
size(NewArray)

ans =

    25    21   365