MATLAB: How to convert a cell to matrix

cell2mat

Example:
A={[1 3 4];
   [2 5 6 4];
   [2 6 8 9 5 6];
   [3 6 5 4 1]}
I know it is not possible by using 
B=cell2mat(A);
as it has different array size.
We may use NaN to follow concatenation rules.
How can I do that?
Once converted to matrix, How can I come back to same cell from the matrix?

Best Answer

How about the following way?
% Convert to numeric array
maxLen = max(cellfun(@numel,A));
A = cellfun(@(x)[x, NaN(1,maxLen - numel(x))],A,'UniformOutput',false);
B = cell2mat(A);
% Back to cell array
A2 = mat2cell(B,ones(1,size(B,1)));
A2 = cellfun(@rmmissing,A2,'UniformOutput',false);
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