Modify Repmat function to concatenate array

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Hello MathWorks community.
I'm trying to concatenate an array of my own "n" times. The thing is that each time each time I concatenate the array, I want to multiply it by 1, 10, 20...
For example, lets say my initial array is [0,1,2,3,4]. And that n =3. Then the output should look like:
out = [0,1,2,3,4,0,10,20,30,40,0,20,40,60,80]
I was wondering if I could use the repmat fucntion in some way to get this don, or is this function only useful for concatanating the exact same array?
Thank's for the help!
Santos

采纳的回答

Stephen23
Stephen23 2021-2-9
V = [0,1,2,3,4];
n = 3;
X = [1,10*(1:n-1)];
Z = kron(X,V)
Z = 1×15
0 1 2 3 4 0 10 20 30 40 0 20 40 60 80

更多回答(1 个)

Monika Jaskolka
Monika Jaskolka 2021-2-9
If you want to understand how repmat works, take a look at the syntax and description in the documentation page: https://www.mathworks.com/help/matlab/ref/repmat.html.
I was able to do this using a loop:
n = 3;
init = [0, 1, 2, 3, 4];
out = init;
for i = 1:n-1
factor = 10*i;
out = horzcat(out, init.*factor);
end
  1 个评论
Santos García Rosado
Thank's Monika, the loop works aswell. I've read the documentation but still acan't figure out a way.

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