title: Scaled plotting of multiple pairwise Venn diagrams in R
body: <p>I want to plot >50 Venn/Euler diagrams of two sets each to scale.
  It is necessary that not only the overlap of the two sets and the set size themselves should scale but also the size of the individual diagrams compared to each other.</p>
  
  <p>Since I know of no R package that allows the plotting of >50 pairwise Venn diagrams at the same time, I was planning to plot them first individually (e.g., using <code>eulerr</code>) and then put all of them together using the <code>gridExtra</code> package or something similar.</p>
  
  <p>However, in this way, the size of the individual pairwise diagrams is not comparable:</p>
  
  <pre><code>require(gridExtra)
  require(eulerr)
  fit1 &lt;- euler(c(A=300, B=500, "A&amp;B"=100))
  fit2 &lt;- euler(c(A=40, B=70, "A&amp;B"=30))
  grid.arrange(plot(fit1), plot(fit2), nrow=1)
  </code></pre>
  
  <p>Does anyone know of an R package or a combination of packages that would allow size-appropriate plotting of several pairwise Venn diagrams?</p>