# Cell2Mat for cells with different dimensions

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EldaEbrithil on 16 Aug 2020
Commented: Star Strider on 2 Feb 2022
Hi all
i have a cell array like this: C={(21 24 47 89 57)' , ( 24 21)' , (16 87 47 89 90 99 182)'} i want to obtain a matrix like that:
21 24 16
24 21 87
A= 47 0 47
89 0 89
57 0 90
0 0 99
0 0 182
How can i do that?
Thank you for the help
Regards
Sara Boznik on 16 Aug 2020
The idea is that you first find the longest vector, second step is that you creat matrix of all 0, so if you have n vectors and the longest vector contain m elements: A=zeros(m,n). Than you should transponse every vector to column vector. And write something like that: if exist C(i,j), A(i,j)=C(i,j).
But I don't know how to do it because I get error because of different dimension in C.
Hope that I somehow helped you.
Best of luck.

Star Strider on 16 Aug 2020
Edited: Star Strider on 16 Aug 2020
Try this:
C={[21 24 47 89 57]' , [24 21]' , [16 87 47 89 90 99 182]'};
rows = cellfun(@numel,C);
cols = size(C,2);
A = zeros(max(rows),cols);
for k = 1:cols
A(1:rows(k),k) = C{k};
end
producing:
A
A =
21 24 16
24 21 87
47 0 47
89 0 89
57 0 90
0 0 99
0 0 182
EDIT — (16 Aug 2020 at 21:31)
Corrected the preallocation of ‘A’ to use the previously calculated values of ‘rows’ and ‘cols’. Code otherwise unchanged.
.
Star Strider on 2 Feb 2022
@Megha Suswaram — My pleasure!

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