title: R rank points in plot
body: <p>I have a question about plots. For example we have variable a and b, we plot this in R and you get the point. Now, I want to make a range of best/highest point. Is there a way to generate a ranking in the point? I thought maybe something with mean?</p>
  
  <p>Thanks!</p>
  
  <pre><code>a&lt;- c(1,3,7,5,3,8,4,5,3,6,9,4,2,6,3)
  b&lt;- c(5,3,7,2,7,2,5,2,7,3,6,2,1,1,9)
  plot(a,b)
  </code></pre>