title: Proportionally sized circles in R
body: <p>I would like to produce what I think will be a very simple diagram in R - it will show the number of genes that fall in to one of two categories.</p>
  
  <p>The area of circles must be relative to each other and show the vast difference between the number of counts in my two categories. One category is 15000 the other is 15. Therefore the area of one circle should be 1000 times greater than the other.  Is there a simple R script that can be used to do this? (Draw two circles, one of which there area is X times smaller than the other)</p>