How to construct proportional Venn diagrams
I found this great software for drawing proportional Venn diagrams (with either circles or ellipses for better accuracy). Very easy to use!
Here's their PLOS One paper too:
I'm a Lecturer and Research Fellow at Griffith University, Queensland, Australia. I have a background in ecology, epidemiology & veterinary science. I'm passionate about wildlife conservation, quantitative modelling, and population & disease ecology.