Replicating values a certain number of times

Hello, I have a long array of data from 0 to 1959 in steps of 1. Is there any way to expand that data so that each value repeats x number of times? ie. if x is 4

new = 0 0 0 0 1 1 1 1 2 2 2 2 3 3 3 3...

I have compressed data and I want to be able to expand it with this approximation.

Thanks for your help!

Answer 1

[Wayne King]

There are a number of ways to do this.

One way use a constant interpolator:

 x = 0:9;
 h = ones(4,1);
 xnew = zeros(40,1);
 xnew(1:4:end) = x;
 y = filter(h,1,xnew);

Another way use repmat()

 x = (0:9)';
 x = (repmat(x,1,4))';
 x = reshape(x,40,1);

Answer 2

[sixwwwwww]

try this:

x = 1:100; % Values to be repeated
a = 4; % Number of times each value is repeated
b = repmat(x, 4);
b = reshape(b, 1, []); % Final result

Answer 3

[Andrei Bobrov]

Jos (10584)'s idea:

k = 1959;
n = 4;

x =  floor((0:(k+1)*n-1)/n);