title: histogram without vertical lines
body: <p>When I create a histogram, it looks a lot like this:</p>
  
  <pre><code>set.seed(1)
  x &lt;- 1:100
  y &lt;- x + rnorm(50)
  y=round(y)
  hist(y)
  </code></pre>
  
  <p>Is there a way to make a histogram look a bit like this? I can only get a histogram with bins, which I don't need for my plot.
  <img src="https://i.stack.imgur.com/VI12q.jpg" alt="heatmap"></p>
  
  <p>I don't want the black bins, I actually only want the blue, green and red lines. Can stackoverflow point me in the right direction?</p>