How do I add NaNs to each of a set of vectors of different lengths to make them all the same length please?

I have 13 columns that I'd like to put into a matrix, but they are different lengths. I can add NaN to them to make them the same length; if the max length is say 5000, how do I add NaNs to the others to make them all 5000 please?

Answer 1

[Walter Roberson]

Matrix = nan(5000,13);
Matrix(1:length(FirstVariable), 1) = FirstVariable;
Matrix(1:length(SecondVariable), 2) = SecondVariable;

and so on.

If the values were in a cell array then there would be other methods available as well.

[Michel Nieuwoudt]

Awesome thank you very much! So nice to get a clear answer :)

Answer 2

[Azzi Abdelmalek]

v1=(1:5)';
v2=(1:8)';
v3=(1:7)'
n=10
A={v1 v2 v3 }
out=cell2mat(cellfun(@(x) [x;nan(n-numel(x),1)],A,'un',0) )

[Bojie Sheng]

Hi how can I add nan at the end of each row, not each coloum. For example:

v1=(1:5);

v2=(1:8);

v3=(1:7);

n=10;

A={v1; v2; v3; };

How to use cell2mat?

Answer 3

[Michel Nieuwoudt]

Thank you for your answer, however, I'm not sure I understand the last line. (I am still learning!)