MATLAB List values above threshold

Question

I have a 3D matrix. I can use the below code to find the number of elements above 1.61. How can I actually list the elements that are above 1.61 and show what value they are? for instance, if I have a value of 8.1 and 9.1, I would like Matlab to tell me those two values. Can I do that?

for i = 1:5
     A = ans.atom_data(:,5,i);
     count(i,:) = sum(A(:)>1.61)

end

Answer 1

If you only want to know the values, use logical indexing, like this:

result = A(A>1.61);

If you want to obtain the result for each third-index-layer of a 3D array B , you can do it with cells:

result = cellfun(@(x) x(x>1.61), squeeze(mat2cell(B,size(B,1),size(B,2),ones(1,size(B,3)))),'uni',0);

Then result{1} gives the values corresponding to B(:,:,1) , etc.