how to insert same scalar as length of something?

Let's suppose, A = [1, 2, 3, 4, 5] and B = [0].

I want to make second [0,0,0,0,0] whose length is 5.

Please Let me know how to do this

Answer 1

[Steven Lord]

If you want to replicate the scalar in B to be the same size as A, you can use repmat. If you know that B will always be 0, instead I'd just use the zeros function.

A = ones(3, 4)

A = 3×4

1 1 1 1 1 1 1 1 1 1 1 1

B = pi

B = 3.1416

C = repmat(B, size(A))

C = 3×4

3.1416 3.1416 3.1416 3.1416 3.1416 3.1416 3.1416 3.1416 3.1416 3.1416 3.1416 3.1416

D = zeros(size(A))

D = 3×4

0 0 0 0 0 0 0 0 0 0 0 0

Answer 2

[Abderrahim. B]

Is this what you are trying to do?

A = [1,2,3,4,5] ; 
myScalar = 2 ; % change this to the scalar value you want

B = myScalar*ones(size(A))

B = 1×5

2 2 2 2 2