How do I use logical indexing on an array made up of structs that contain character fields?

I have a structure with two fields, type and specie, both of which contain character strings. I built an array consisting of only these structures, and now I'm trying to use logical indexing to find the elements of a given type. The code is as follows:

A(1).type = 'insect';
A(1).specie = 'fly';
A(2).type = 'insect';
A(2).specie = 'moth';
A(3).type = 'fish';
A(3).specie = 'grouper';
A(4).type = 'fish';
A(4).specie = 'tuna';
[A([A.type] == 'insect').specie]

I'm modifying the solution to this question, but I get an error that says:

Error using  == 
Matrix dimensions must agree.

Error in myfile (line 12)
[A([A.type] == 'insect').specie]

I know that comparing strings with == isn't good, so I thought I would use strcmp instead. However, this code:

[A([strcmp(A.type, 'insect')]).specie]

produces an error of

Error using strcmp
Too many input arguments.

Error in myfile (line 12)
[A([strcmp(A.type, 'insect')]).specie]

If I use an anonymous function, I can create an array of structures that meet the criterion, i.e.

hits = A(arrayfun(@(x)strcmp(x.type, 'insect'), A));

but I don't know how to get the fields from those structures into another array without resorting to a loop.

How can I perform this task using the base Matlab only?

Answer 1

[Azzi Abdelmalek]

x={A.type}
A(strcmp(x, 'insect')).specie