Linear index for cell array with 2 subscripts

Hi,

I want to delete the empty cells in a cell array with 2 subscripts, for example A. One approach is

             [r,v] = find(cellfun('isempty',A)==1);
             r= unique(r);
             A(r,:) = [];

However, is it possible to use sub2ind() to more specifically delete the empty cells in A? I have tried this way but it does not produce desired results

            [r,v] = find(cellfun('isempty',A)==1);
            idx = sub2ind(size(A),r,v);
            A(idx) = [];

Answer 1

[the cyclist]

I think you accidentally deleted the non-empty cells.

Also, I am not sure what it means to delete an empty cell. It is already empty. If you want to keep the shape of A intact, then something has to be there.

This code will delete the empty cells, but return a one-dimensional cell array:

A = {[1 2],[3 4],    [];
        [],[5 6], [7 8]}

[r,v] = find(~cellfun('isempty',A))
idx = sub2ind(size(A),r,v);
A = A(idx)

[Hongtao Li]

Hi, the cyclist

Thanks for your answers. Actually that is the problem I encountered. I want to keep the structure of the cell array, i.e. it is still with 2 subscripts.

[the cyclist]

OK. But what do you want instead of an empty cell? For example, take a look at the array A that I created in my answer. It is a 2x3 cell array, with two empty cells.

What do you want the output to be? If you still want a 2x3 cell array, then element (1,3) has to be something. As I asked before, what you do mean by "delete"?

Alternatively, what are you trying to do with array A that has a problem because of the empty cells?