title: How does 'quiver' function work in matlab?
body: <p>How does the quiver function work? I know it creates vector arrows but what do u,v,x and y variables actually mean?</p>
  <ul>
  <li><p>Is there a relation between u-x and v-y?</p>
  </li>
  <li><p>How is the actual length of the arrow determined and how does it affect the 4 variables above?</p>
  </li>
  <li><p>Does u,v mean 'from' and x,y mean 'to' which will create the arrow head at x,y with start location at u,v?</p>
  </li>
  </ul>