scale_ll4: Create an LL4-like Scale for ggplot2 Axes

In beezdemand: Behavioral Economic Easy Demand

Create an LL4-like Scale for ggplot2 Axes

Description

This function generates a ggplot2 continuous scale that applies the ll4 transformation (and its inverse ll4_inv) to an axis. This is useful for visualizing data spanning multiple orders of magnitude while handling zeros.

Usage

scale_ll4(..., lambda = 4)

Arguments

...	Arguments passed on to ggplot2::scale_y_continuous or ggplot2::scale_x_continuous (e.g., name, breaks, labels).
lambda	A positive numeric scalar, the lambda parameter for the ll4 transformation. Default is 4.

Value

A ggplot2 scale object.

See Also

ll4, ll4_inv, trans_new

Examples

if (require(ggplot2) && require(scales)) {
  set.seed(123)
  df <- data.frame(
    x = 1:100,
    y_raw = c(0, 0.1, 0.5, 1, 5, 10, 50, 100, 500, 1000, sample(1:2000, 90, replace = TRUE))
  )

  # Plot with y-axis on LL4 scale
  ggplot(df, aes(x = x, y = y_raw)) +
    geom_point() +
    scale_ll4(name = "Y-axis (LL4 Scale)", lambda = 4) +
    ggtitle("Data with LL4 Transformed Y-Axis")

  # Can also be used for x-axis by replacing scale_y_continuous in its definition
  # Or by creating a scale_x_ll4 variant.
}

beezdemand documentation built on March 3, 2026, 9:07 a.m.