In ggplot2, how do you add a color gradient to a scatter plot based on a numeric variable color_var?

Question

Admin · Accepted Answer

scale_color_gradient(low = "blue", high = "red")

Admin · Answer

scale_fill_gradient(low = "blue", high = "red")

Admin · Answer

color_gradient(low = "blue", high = "red")

Admin · Answer

geom_point(aes(color = color_var), fill = "blue")

Q. In ggplot2, how do you add a color gradient to a scatter plot based on a numeric variable color_var?