Find empty cells in 3D cell?

I have a 3D cell RowXColXDep (12X125X1216), I want to find the empty cells (which row, column, and depth). I used:

[Row Col Dep] = find(cellfun(@isempty,channelResp));

but it did not work, it works only for 2D cells. Is there a solution for 3D cells?

Thanks in advance

Answer 1

[Shubham Gupta]

Try this:

[r,c] = find(cellfun(@isempty,channelResp));
[nR,nC,nD] = size(channelResp);
Dep = floor(c/nC-0.0001)+1;
Col = c - nC*(Dep-1);
Row = r;

Let me know if you have doubts.

[Sharif Khalil]

Thank you, it worked!

[Shubham Gupta]

I am glad I could help. Please, make sure to accept the answer if it solves your problem. Cheers

Answer 2

[Stephen23]

The simple MATLAB solution is to use ind2sub. First lets create some fake data:

>> A = repmat({NaN},12,125,1216);
>> A(5,23,[2,4,8]) = {[]}; % empty

Then all you need is this:

>> [R,C,P] = ind2sub(size(A),find(cellfun('isempty',A)))
R =
   5
   5
   5
C =
   23
   23
   23
P =
   2
   4
   8

Why I used P: https://www.mathworks.com/help/matlab/math/multidimensional-arrays.html

[Walter Roberson]

This is the better answer.