How to find position (indices) of minimum element on each page of 4 dimensional matrix?

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Sajid Sarwar 2021-6-9

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https://ww2.mathworks.cn/matlabcentral/answers/851520-how-to-find-position-indices-of-minimum-element-on-each-page-of-4-dimensional-matrix

编辑： KSSV 2021-6-9

dim.gif

I have 4 dimensional vector similar to that shown in attached picture. I want to find position (indices) of minimum on every page separately. For example for 2 dimension we can do like this,

[i, j]=find(A == min(min(A)));

Similar thing i want to do for 4 dimensional vector. Is there any solution using MATLAB?

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Answer 1

KSSV 2021-6-9

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https://ww2.mathworks.cn/matlabcentral/answers/851520-how-to-find-position-indices-of-minimum-element-on-each-page-of-4-dimensional-matrix#answer_720410

编辑：KSSV 2021-6-9

在 MATLAB Online 中打开

You can use the function min to achieve this. Read about it.

% demo data using 3D matrix 
A(:,:,1) = [2 4; -2 1];
A(:,:,2) = [9 13; -5 7];
A(:,:,3) = [4 4; 8 -3];
[val,idx] = min(A,[],[1 2],'linear') ;   % gives min value and global index 
[i,j,k] = ind2sub(size(A),idx) ;         % get sub index from global index 