title: How do I overlay two plots in Julia
body: <p>I would like to overlay these two plots. In my code, I only manage to plot them side by side.</p>
  <pre><code>using PyPlot
  x = [μ, μ]
  y = histogram(walks[end, :], bins=20, legend=nothing)
  
  plot(plot(x), y)
  </code></pre>
  <p><a href="https://i.stack.imgur.com/fBHcv.png" rel="noreferrer"><img src="https://i.stack.imgur.com/fBHcv.png" alt="enter image description here" /></a></p>