Plot Filled Area Below a Curve Line

Source: R/curve_areas.R

Plot Filled Area Below a Curve Line

plot_curve_area(x, y, y.base = 0, col = NA, ...)

Arguments

x

vector of x coordinates
y

vector of y coordinates
y.base

y coordinate of horizontal line that closes the area
col

colour of area to be plotted. Default: NA
…

further arguments given to polygon such as border (colour of the border of the polygon)

Examples

  x <- seq(-pi, pi, pi/8)
  y <- sin(x)

  plot(x, y)
  plot_curve_area(x, y, 0, col = "red")

  plot(x, y)
  plot_curve_area(x, y, -1, col = "red")
  plot_curve_area(x, y, 1, col = "green")