aes() arguments: xmax, xmin, ymax, ymin, alpha, color, fill, linetype, size.Ī + geom_ribbon(aes(ymin = unemploy - 900, ymax = unemploy + 900): For each x, plot an interval from ymin to ymax. aes() arguments: x, y, alpha, color, fill, group, subgroup, linetype, size.ī + geom_rect(aes(xmin = long, ymin = lat, xmax = long + 1, ymax = lat + 1)): Draw a rectangle by connecting four corners ( xmin, xmax, ymin, ymax). aes() arguments: x, y, alpha, color, group, linetype, size.Ī + geom_polygon(aes(alpha = 50)): Connect points into polygons. aes() arguments: x, xend, y, yend, alpha, angle, color, curvature, linetype, size.Ī + geom_path(lineend = "butt", linejoin = "round", linemitre = 1): Connect observations in the order they appear. Graphical PrimitivesĪ <- ggplot(economics, aes(date, unemploy)) b <- ggplot(seals, aes( x = long, y = lat))Ī + geom_blank() and a + expand_limits(): Ensure limits include values across all plots.ī + geom_curve(aes(yend = lat + 1, xend = long + 1), curvature = 1): Draw a curved line from (x, y) to (xend, yend). Use a geom function to represent data points, use the geom’s aesthetic properties to represent variables.
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