Use a subset of number to find the index in a bigger set

I want to use a subset of number to find the index in a bigger set

eg bigger set BS = [2.33, 4.55, 5.88, 3.98, 4.66, 7.99, 2.33, 9.55]

smaller set SS = [4.55 4.66 7.99]

I want to use the smaller set (SS) to pick the inex of its location in the bigger set (BS)

I tried using find, ismember but not working well

Answer 1

[Jon]

BS = [2.33, 4.55, 5.88, 3.98, 4.66, 7.99, 2.33, 9.55];
SS = [4.55 4.66 7.99];

idx = find(ismember(BS,SS))

idx = 1×3

2 5 6

[Jon]

Glad that worked for you. Good luck with your work.