Cell arrays with a vector within a cell within a cell

I have a cell array where each element consists of a 1 x 1 cell containing a vector of type double, i.e., C{1,1} contains a vector of length N.

How do I convert the inner cells from 1 x 1 cells into N x 1 cells where the entries correspond to each vector of length N? The N of each vector might be different.

I think the right way to do this is via cellfun but something like

C_out = cellfun(@(C_test) num2cell(C_test{1}), C_in, 'uniform',0);

does not quite get me there.

Answer 1

[Matt J]

Maybe this is what you mean?

C_in={[1;2;3],[4;5],6}

C_in = 1×3 cell array
    {3×1 double}    {2×1 double}    {[6]}

n=max(cellfun('length',C_in));

C_out=num2cell(cell2mat( cellfun(@(x) cpad(x,n), C_in,'uni',0)  ) )

C_out = 3×3 cell array
    {[1]}    {[  4]}    {[  6]}
    {[2]}    {[  5]}    {[NaN]}
    {[3]}    {[NaN]}    {[NaN]}

function C=cpad(C,n)

 C(end+1:n,1)=nan;

end

[L'O.G.]

Yes, thank you!

Answer 2

[Walter Roberson]

cellfun up a num2cell call.

[L'O.G.]

What does "cellfun up" mean? I think that's what I tried to do as I mention in my question.

Answer 3

[Matt J]

Is this what you mean?

C_in={{[1;2;3]},{[4;5]},{6}}

C_in = 1×3 cell array
    {1×1 cell}    {1×1 cell}    {1×1 cell}

C_out=[C_in{:}]

C_out = 1×3 cell array
    {3×1 double}    {2×1 double}    {[6]}