How to repeat monthly data over several years?

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Hello,
I have a potentially simple question.
I have a spatial matrix A=144x192x1x12. The fourth dimension is time in months.
I would like to make a matrix where I have 30 years of repeated data B=144x192x1x360.
I have tried something along the lines of-
for i=1:12;
B(:,:,:,i:12:360)=A(:,:,:,i);
end
But of course this did not work due to differnce sizes of each side.
How would I achieve this simple copying of each year for 30 years?
Thank you,
Holly

采纳的回答

Thiago Henrique Gomes Lobato
Matlab has a function for concatenating values in different dimensions, you could solve your problem like this:
A = randn(144,192,1,12);
B = [];
for i=1:30
B = cat(4,B,A);
end
size(B)
ans =
144 192 1 360

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