Line segments and curves — geom_segmentgeom_segment() draws a straight line between points (x, y) and (xend, yend). geom_curve() draws a curved line. See the underlying drawing function grid::curveGrob() for the parameters that control the curve. geom_segment( mapping = NULL, data = NULL, stat = "identity", position = "identity", ..., arrow = NULL, arrow.fill = NULL, lineend = "butt", linejoin = "round", na.rm = FALSE, show.legend = NA
