title: How to check if one vector is a subset of another?
body: <p>I'm looking for a matlab way of doing this.  Looping through seems easy enough.  I have two vectors, say <code>a = [1 2 3]</code> and <code>b = [1 54 2 4 6 3]</code>.  I want to determine if <code>a</code> is a subset of <code>b</code>.  How is this done?</p>