GeomHull                Draw a convex hull around a group of points
GeomKDE                 Hotelling ellipses for ggplot2
StatBag                 Bag plots
StatKDE                 KDE contours for ggplot2
StatOutliers            Calculate per-point Hotelling statistic
autoplot.prcomp         Automatic plotting of PCA objects
hotelling_ellipse       Calculate Hotelling or data ellipse around some
                        points
outliers                Calculate the T2/D2 statistic for individual
                        points
