title: Get vector of indexes containing values between two numbers
body: <p>I have a vector called <code>time</code>, which contains time values.  I'd like obtain a vector of indexes of <code>time</code> in which the value is between threshold <code>x</code> and threshold <code>y</code>.</p>
  
  <p>This is undoubltedly trivial to do, but I'm struggling with Matlab syntax a bit, here.  Any help would be greatly appreciated.</p>
  
  <p>Blz</p>