6  Required mappings

GEOM	REQUIRED MAPPINGS
geom_abline	NA
geom_area	x and y.
geom_bar	x or y
geom_bin_2d	x and y.
geom_bin2d	x and y.
geom_blank	NA
geom_boxplot	x or y
geom_col	x and y.
geom_contour	x, y, and z.
geom_contour_filled	x, y, and z.
geom_count	x and y.
geom_crossbar	x, y, and ymin and ymax or xmin and xmax.
geom_curve	x, y, and xend or yend.
geom_density	x or y
geom_density_2d	x and y.
geom_density_2d_filled	x and y.
geom_density2d	x and y.
geom_density2d_filled	x and y.
geom_dotplot	x.
geom_errorbar	x, ymin, and ymax or y, xmin, and xmax.
geom_errorbarh	x, ymin, and ymax or y, xmin, and xmax.
geom_freqpoly	x or y
geom_function	NA
geom_hex	x and y.
geom_histogram	x or y
geom_hline	yintercept.
geom_jitter	x and y.
geom_label	x, y, and label.
geom_line	x and y.
geom_linerange	x, ymin, and ymax or y, xmin, and xmax.
geom_map	NA
geom_path	x and y.
geom_point	x and y.
geom_pointrange	x, y, and ymin and ymax or xmin and xmax.
geom_polygon	x and y.
geom_qq	sample.
geom_qq_line	sample.
geom_quantile	x and y.
geom_raster	x and y.
geom_rect	x, width, xmin, or xmax and y, height, ymin, or ymax.
geom_ribbon	x, ymin, and ymax or y, xmin, and xmax.
geom_rug	NA
geom_segment	x, y, and xend or yend.
geom_sf	NA
geom_sf_label	geometry.
geom_sf_text	geometry.
geom_smooth	x and y.
geom_spoke	x, y, angle, and radius.
geom_step	x and y.
geom_text	x, y, and label.
geom_tile	x and y.
geom_violin	x and y.
geom_vline	xintercept.