eda_unipow: Ladder of powers transformation on a single vector

In mgimond/tukeyedar: Tukey Inspired Exploratory Data Analysis Functions

Ladder of powers transformation on a single vector

Description

eda_unipow re-expresses a vector on the ladder of powers and plots the results using a histogram and a density function. Either the Tukey or Box-Cox transformation is used in computing the re-expressed values.

Usage

eda_unipow(
  x,
  p = c(2, 1, 1/2, 0.33, 0, -0.33, -1/2, -1, -2),
  tukey = FALSE,
  bins = 5,
  cex.main = 1.3,
  col = "#DDDDDD",
  border = "#AAAAAA",
  title = "Re-expressed data via ladder of powers",
  ...
)

Arguments

x	Vector
p	Vector of powers
tukey	If TRUE, apply Tukey's power transformation. If FALSE adopt Box-Cox transformation
bins	Number of histogram bins
cex.main	Histogram title size (assigned to each histogram plot)
col	Histogram fill color
border	Histogram border color
title	Overall plot title (set to NULL for no title)
...	Other parameters passed to the graphics::hist function.

Details

The output is a lattice of descriptive plots showing the transformed data across different powers.

Value

No return value

References

• Tukey, John W. 1977. Exploratory Data Analysis. Addison-Wesley.

Examples

data(mtcars)
eda_unipow(mtcars$mpg, bins=6, tukey = TRUE)

mgimond/tukeyedar documentation built on Feb. 1, 2025, 4:02 a.m.