Eunoia: Euler and Venn Diagrams in Five Languages

Ten years ago I wrote eulerr as part of my Bachelor’s thesis (Larsson 2018) in statistics—an R package for area-proportional Euler diagrams . At the time it was the first package to feature ellipses beyond three sets, EulerAPE (Micallef and Rodgers 2014) being the first to introduce ellipses at all. eulerr has been surprisingly popular, having been used in (at least) 600 academic papers. It was…