MATLAB: Remove NaNs in matrices within cell array

Question

I have a matrix that has some data in its columns like this:

A = [1 NaN NaN 1 1; NaN NaN NaN 1 NaN; 1 1 NaN 1 NaN]

I want to extract the non NaN elements so that they are returned in a cell array where a cell holds the non NaN elements of the columns like this:

C = {[1;1],[1],[],[1;1;1],[1]}

This far I have tried to use the cellfun:

 C = num2cell(A,1);
 C(cellfun(@isnan,C, 'UniformOutput', false)) = [];

But i receive an error: Function 'subsindex' is not defined for values of class 'cell'.

I Managed to use for loop:

C = num2cell(A,1);
for i = 1:length(ct)
   inds = isnan(ct{i});
   ct{i}(inds) = [];
end

This does the trick, but I'm worried about the performance as A can be huge in my actual code.

Any help is more than welcome!

Edit: typo

Answer 1

out = cellfun(@(x)x(~isnan(x)),num2cell(A,1),'un',0);

with for-end loop

n = size(A,2);
out = cell(n,1);
for jj = 1:n
    out{jj} = A(~isnan(A(:,jj)),jj);
end

with accumarray

s = size(A);
ii = ones(s(1),1)*(1:s(2));
out = accumarray(ii(:),A(:),[],@(x){x(~isnan(x))});