title: Putting a vector of points through cartToPolar in OpenCV
body: <p>I have a <code>vector&lt;Point2f&gt;</code> with points that I need to convert to polar. The only function I see to do this is <code>cartToPolar()</code>, which, for some reason, doesn't allow just a vector of points but instead requires two, each containing only x coordinates and y coordinates respectively.</p>
  
  <p>Is there any graceful solution to this or do I have to manually make these other two vectors?</p>