title: Creating multiple plots on the same Graph?
body: <p>In my code i have a variable called hops owned by the breed ants.</p>
  
  <pre><code>             ants-own 
              [
                  hops
                  distance-gone
                  distance-to-go
                  target-node
                  current-node
              ]
  </code></pre>
  
  <p>I want to plot the hops against the time ( ie when it takes 1st hop , it plots 1 against time n likewise) for each ant. In doing so, i should have n number of graph lines on the same plot where n is my number of ants).</p>
  
  <p>i implemented it using the following code snippet, but getting only one line of graph.</p>
  
  <pre><code>     to do-plot
  
        set-current-plot "Hop Count"
        let i 0
        ask ants 
         [
           set-current-plot-pen (word who)
           set-plot-pen-color i + 15
           plot  hops 
  
         ]
        end
  </code></pre>
  
  <p>It would be better if different ants graph gets plotted in diffrent color.</p>