PairViz

Eulerian tour algorithms for data visualization and the PairViz package. π™ΏπšŠπš’πš›πš…πš’πš£ is an R package that produces orderings of statistical objects for visualization purposes. We abstract the ordering problem to one of constructing edge-traversals of (possibly weighted) graphs. π™ΏπšŠπš’πš›πš…πš’πš£ implements various edge traversal algorithms which are based on Eulerian tours and Hamiltonian decompositions. We describe these algorithms, their π™ΏπšŠπš’πš›πš…πš’πš£ implementation and discuss their properties and performance. We illustrate their application to two visualization problems, that of assessing rater agreement, and model comparison in regression.