How to make one matrix?

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Ahmed
Ahmed 2024-1-28
评论： Walter Roberson 2024-1-29
Hi
I have 100 arrays i.e. each have one row and diffrent columns (say size is A = 1 * 167 and B = 1 * 189 and so on). I want to make one matrix in way that the first row is A, second row is B and so on... But the columns will remain different. How can I do it?
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Ahmed
Ahmed 2024-1-29
@Torsten No this is not working e.g.,
ITER = [iters_1; iters_2];
Error using vertcat
Dimensions of arrays being concatenated are not consistent.
Error in PLOTTING_UNCERTINITY (line 172)
ITER = [iters_1; iters_2];

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Torsten
Torsten 2024-1-28
移动：Torsten 2024-1-28
Ran in:
Either use a cell array or dimension the matrix to have the maximum number of columns of the 100 row vectors:
A = [1 23 45];
B = [1 2];
M1 = cell(2,1);
M1{1} = A;
M1{2} = B;
M1
M1 = 2×1 cell array
{[1 23 45]} {[ 1 2]}
n = max(size(A,2),size(B,2));
M2 = zeros(2,n);
M2(1,:) = [A,zeros(1,n-size(A,2))];
M2(2,:) = [B,zeros(1,n-size(B,2))];
M2
M2 = 2×3
1 23 45 1 2 0
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Stephen23
Stephen23 2024-1-29
编辑：Stephen23 2024-1-29
"How to get rid off these zeros during plotting?"
Replace ZEROS with NAN. Or use the approach I gave you here:
https://www.mathworks.com/matlabcentral/answers/2075401-how-to-make-one-matrix#comment_3045381
"actually all the variables are stored separetly."
Having lots of separate variables makes your data much harder to work with.
It is much better to use a cell array or structure array.
Walter Roberson
Walter Roberson 2024-1-29
Whatever process is loading all that data into seperate variables: it would be better if it loaded it all into a cell or a struct array to start with.

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