Question

As input to a function, I am getting an array of target elements, T, and an array of structs S where each one has a .elems field, which is a list of integers (elements).

I’m sure there’s a simple way to do this in Matlab. How do I get the indices i of all structs where a specific element t of T is in S(i).elems contains t?

Answer 1

So I think you’ll need to do this with an arrayfun. I did:

S = ... (1-by-N array of structs);
T = ... (1-by-K array of numbers);
indices = find(arrayfun(@(i)any(ismember(T, S(i).elems)), 1:numel(S)));

any(ismember(T, S(i)elems)) tests is any of the things in T are in S(i).elems. The arrayfun repeats this for each struct in S. find extracts indices from the logical array that is returned by the arrayfun.