geom_chord_arcs         Chord diagram arc ribbons Draws the ribbon
                        (arc) layer of a chord diagram.
geom_chord_diagram      Chord Diagram
geom_chord_labels       Chord diagram horizontal node labels Draws
                        horizontal text labels outside the sector
                        bands.
geom_chord_labels_curve
                        Chord diagram node labels with curved text
                        Draws text labels outside the sector bands.
geom_chord_labels_perp
                        Chord diagram perpendicular node labels Draws
                        text labels radiating outward from the sector
                        midpoint.
geom_chord_sectors      Chord diagram sector bands Draws the outer
                        sector band layer of a chord diagram.
stat_chord              stat_chord
