How to create a vector with certain numbers?

How is it possible to create a vector where, for example, the first 10 positions have the value 20, the second 10 positions the value 30, and the third 10 positions value of 40 and so on, until a the end of a certain vector. In the end I want to do this for a vector of almost 1000000 row. So it should not be done manually, but maybe with a loop?

Answer 1

[Guillaume]

Simply

repelem(1:10:1000000, 10)'

[M.Ven]

Thank you

Answer 2

[Bjorn Gustavsson]

something likethis would do it for you;

nMax = 1e6;
Vals = 20:10:(10*(nMax+1)); % whatever values you want
[X] = meshgrid(Vals,1:10);  
X = X(:); % Or its transpose.

HTH

[M.Ven]

Thank you