title: VennDiagram is not generating proportional graph
body: <p>I have written a simple code using VennDiagram,</p>
  
  <pre><code>venn.diagram(list("All Patents" = 1:140188, "Influential Patents" = 1:43271, "Valuable Patents" = 23314:90029), 
           col = 'transparent', fill = c("yellow", "orange", "green"), alpha = c(0.5, 0.5, 0.5), 
           cex = 1, cat.fontface = 4, cat.pos = 1, cat.cex = 0.75, cat.dist = -0.03,
           cat.fontfamily = 'serif', scaled = TRUE, filename = "Patent_Venn_Diagram.emf");
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/tWiWF.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/tWiWF.png" alt="enter image description here"></a></p>
  
  <p>However, the graph I generate is not proportional. Can someone please suggest me how to get a scaled plot. </p>