How to perform repmat function to repeat rows of a matrix

A=[1,0,0,0,1;2,0,0,0,2;3,0,0,0,3]

I would like to repeat each row for n times and get output something like this when n is 2:

output=[1,0,0,0,1;1,0,0,0,1;2,0,0,0,2;2,0,0,0,2;3,0,0,0,3;3,0,0,0,3]

Answer 1

[Bruno Luong]

A=[1,0,0,0,1;2,0,0,0,2;3,0,0,0,3]

A = 3×5

1 0 0 0 1 2 0 0 0 2 3 0 0 0 3

A(repmat(1:end,2,1),:)

ans = 6×5

1 0 0 0 1 1 0 0 0 1 2 0 0 0 2 2 0 0 0 2 3 0 0 0 3 3 0 0 0 3

[Zee]

This works, thank you.

[Marco Caputano]

indeed that works! it took me some time to get it, however thanks! :-D

Answer 2

[Torsten]

B = repelem(A,2,1)

[Zee]

Hi, cannot use this function since it got introduced in 2015 version, I am using 2011 version. Thanks.

[Torsten]

A = [1,0,0,0,1;2,0,0,0,2;3,0,0,0,3];
n = 2;
B = [];
for i = 1:size(A,1)
  B = [B;repmat(A(i,:),n,1)];
end
B 

B = 6×5

1 0 0 0 1 1 0 0 0 1 2 0 0 0 2 2 0 0 0 2 3 0 0 0 3 3 0 0 0 3

Answer 3

[Bruno Luong]

A=[1,0,0,0,1;2,0,0,0,2;3,0,0,0,3]

A = 3×5

1 0 0 0 1 2 0 0 0 2 3 0 0 0 3

reshape(repmat(reshape(A,1,1,[]),2,1,1),[],size(A,2))

ans = 6×5

1 0 0 0 1 1 0 0 0 1 2 0 0 0 2 2 0 0 0 2 3 0 0 0 3 3 0 0 0 3

Answer 4

[Bruno Luong]

n = 2;
A(ceil((1:n*end)/n),:)

Answer 5

[Bruno Luong]

n = 2; 
A(kron(1:end,ones(1,n)),:)

Answer 6

[Bruno Luong]

n = 2;
kron(A,ones(n,1))