how to remove rows from structure array on matlab

Let's say there are 2 structure arrays, A and B.

A is a 300x1 size structure, and B (112x1) is a subset of A, which means B is randomly selected from A.

I want to remove those rows from A so that the size of A becomes 118x1.

How can I deal with this problem??

[James Tursa]

How did you randomly select B? Do you have indexes or a logical vector? The obvious thing to do would be to take the complement of that selection from A.

Answer 1

[KSSV]

A = rand(300,1) ; 
idx = randperm(300,112) ; 
B = A(idx) ; 

val = ismember(A,B) ; 
iwant = A(~val) ;