How to remove zero values from vector?

Hi,

Let's say I have vector something like:

q = [0 0 0 2 4 10 9 5 0 0 0 8 9]

I want it to be something like:

q = {0 0 0 2 4 10 9 5 8 9]

How can I choose to remove the zero values but without removing the first three zeroes?

Thank you.

Answer 1

[Andrei Bobrov]

q = [0 0 0 2 4 10 9 5 0 0 0 8 9];
out = [q(1:find(q~=0,1,'first')-1)   q(q~=0)];

Answer 2

[belairaway]

I think that using the built-in function nonzeros is better

Answer 3

[Azzi Abdelmalek]

q = [0 0 0 2 4 10 9 5 0 0 0 8 9];
out=[q(1:find(q~=0,1))   q(q~=0)]