[R] How to plot more than 3 sets in Venn Diagrams?

[Duncan Murdoch]

Tan Hui Hui Jenny wrote:
> I'm trying to plot Venn diagrams with more than 3 sets (5 actually) in order to describe graphically the genetic variation between populations.
>  
> I tried the limma library but realised it can only plot 3 sets.
>  
> Is there any solution? Of course I could plot the chart manually but it'll take too long (have other datasets)..... One of my dataset is given below. 

The general Venn diagrams with more than 3 sets are ugly.  You can't use 
circles, you need strange shapes to get all the 2^n-1 possible subsets.

Duncan Murdoch