Find the layer the minimum number occurs

I have a 3D array and I want to find the layer where the minimum number occurs for each row,column combination. Where the output is a 2D array of the same number of rows/columns as the input 3D array.

Answer 1

[Star Strider]

Try this:

M = rand(4, 5, 3)                           % Create Matrix
[Mmin,Idx] = min(M,[],3)                    % Return ‘Page’ Of Minimum

It takes the minimum along the third dimension, and returns the ‘page’ (in the ‘Idx’ output) where the minimum occurs.

[Sarah Trenberth]

Thank you so much!!

[Star Strider]

As always, my pleasure!

Answer 2

[KALYAN ACHARJYA]

array=randi(10,4,4,3);
[rows colm z]=size(array);
for j=1:z;
num(j)=sum(sum(array(:,:,j)==1)+sum(array(:,:,j)==2)+sum(array(:,:,j)==3));
end
minimum_value=min(num);
idx=find(num==minimum_value);
fprintf('The Layer number is %d',idx)