Map data categorical to Cartesian coordinates. Unlike Scale.x_continuous, each unique x value will be mapped to a equally spaced positions, regardless of value.

By default continuous scales are applied to numerical data. If data consists of numbers specifying categories, explicitly adding Scale.x_discrete is the easiest way to get that data to plot appropriately.


Aesthetics Acted On

x, xmin, xmax, xintercept


# Treat numerical x data as categories
plot(x=rand(1:3, 20), y=rand(20), Scale.x_discrete)
x 2 3 1 0.0 0.5 1.0 y