r plot for polygon graph

Question

If anyone can tell me how to draw this kind of graph in R? http://pharmrev.aspetjournals.org/content/58/3/621/F9.large.jpg The souce code or r package is what I want. my original data is like this:

A B 0.1
A C 0.5
A D 0.4
B C 0.2
B D 0.1
C D 0.8

Thanks

Answer 1

Diagram package is what you want. Here is link for examples (vignettes), look at page 11.