Find a value in structure

find a value in a struct - (mathworks.com)

The answer below that question is.

valuetofind = 58;
find(arrayfun(@(s) ismember(valuetofind, s.cluster), clusters))

But if I want to find one value in different fields?

e.g. 18841 maybe in e1||e2||e3 ,and I want to return the index 4

[Arif Hoq]

you can extract the field e1,e2 and e3, then you can use ismember function