title: Using Plots.jl for frame heavy Gifs
body: <p>I am trying to create a gif with 100 frames, which I assume shouldn't be a problem if I code it correctly. However, the following code slows to a crawl, and seems to cause a memory leak. </p>
  
  <pre><code>using Plots
  using ProgressMeter
  
  
  u = rand(100,100)
  hmap = heatmap(zeros(size(u)), clim=(0,1))
  
  
  p = Progress(1000, 1)
  
  anim = Animation()
  
  for i=1:1000
      u = rand(100,100)
      heatmap!(hmap[1],u)
      if mod(i,10) == 0
          frame(anim)
      end
      next!(p)
  end
  
  gif(anim, "/tmp/anim_fps30.gif", fps=30)
  </code></pre>
  
  <p>Have I made a critical error in my coding? Is there a way to get frames for the animation without holding them all in memory? Thanks.</p>