Extract 5 highest value of a vector

If I want to extract the indices of the 5 highest value of a avg vector (30x1 for example) how can I do?

ind = find(avgDE... )

Answer 1

[Andrei Bobrov]

[a,ii] = sort(avgDE,'descend');
outidx = ii(1:5);

[Francesco]

Good, but descend! :D