Find the min for each plane of a multidimensional array

Question

Emanuele Mele 2019-2-28

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/447521-find-the-min-for-each-plane-of-a-multidimensional-array

回答： Bob Thompson 2019-2-28

Hi all!

I would like to find the position and the min value for each plane of a multidimensional array (a stack).

The minimum value must be found considering the minimum of each plane and therefore not an absolute minimum because it must be in the same position for each plane.

Thank you!

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Bob Thompson 2019-2-28

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/447521-find-the-min-for-each-plane-of-a-multidimensional-array#answer_363192

A = randi(100,3,3,3); % Sample input
[m,r] = min(A,[],1);  % Locate minimum value for all rows
[m,c] = min(m,[],2);  % Locate minimum column from row minimums
for i = 1:size(A,3);  % Loop through each sheet to combine index
    idx(:,:,i) = [r(:,c(:,:,i),i),c(:,:,i)]; Combine for ordered pair
end

So, minimum has the ability to determine minimums along a specified dimension. Unfortunately, unlike max(), it can only be done along one dimension at a time.