MATLAB: Repeat an element in a vector

repeatvector

Hi all,

I have one vector and i wish to repeat the first element of the vector once at the very beginning.

For example:

n = [1 2 3 4 5 6 7 8 9]

n = [1 1 2 3 4 5 6 7 8 9]

Thank you all.

[n(1) n]

[repmat(n(1),1) n]

 A = reshape(repmat(A(:)',200,1),[],3);

This repeats the elements in the columns. If you want to repeat the along the rows do this:

 A = reshape(repmat(reshape(A',[],1),1,200)',[],size(A,1))';

(Corrected)

x = [2 5 3 6 1];
y = reshape(repmat(x, 4, 1), 1, []);

Or:

y = kron(x, ones(1, 4));