How can one create this matrix?

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I want to create a matrix like
1 1
1 2
1 3
1 4
1 5
2 1
2 2
2 3
..
That is, I start from
grids=1:1:5
and I want to repeat this "grids" in the second column. Please advise.

采纳的回答

madhan ravi
madhan ravi 2020-7-24
[X, Y] = meshgrid(1:5);
[X(:), Y(:)]

更多回答(1 个)

Alan Stevens
Alan Stevens 2020-7-24
This will do it:
n = 5; reps = 4;
c1 = ones(n,1)*(1:reps); c1 = c1(:);
c2 = (ones(reps,1)*(1:n))'; c2=c2(:);
M = [c1 c2];
  3 个评论
Alan Stevens
Alan Stevens 2020-7-24
编辑:Alan Stevens 2020-7-24
You are right that there are probably easier ways to do it (use of meshgrid would indeed be better, but I just didn't think of it!)
The first column doesn't have a 5 in it because it wasn't clear to me that the op wanted the same number of repeats as grids.

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