Ozgul Inceoglu <Ozgul.Inceoglu <at> ulb.ac.be> writes: > > I am trying to find the percentage of the parameters explaining the bacterial community composition. I > have one data matrix with relative abundance of OTUs and one with environmental parameters. I used > varpart in vegan package but the values in the venn diagram is bigger than 100% in total.How is it possible?
Dear Ozgul Inceoglu, This is not possible and this is not the case. What is possible, and what does happen is that you can have negative components in your diagram. These negative components are mind boggling, but they do appear regularly. Legendre & Legendre (2012) "Numerical Ecology" give some reasons for their occurrence. In you Venn diagram you have obviously selected an option of not displaying negative terms. Get the full sums of the components, including negative ones, and I bet the sums will match. Cheers, Jari Oksanen ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.