add_mahalanobis: Add Mahalanobis distance

In jmbarbone/jordanExtra: Extra Functions for the mark Package

Add Mahalanobis distance

Description

Add a mahalanobis distance to the end of a data frame.

Usage

add_mahalanobis(
  df,
  ...,
  .inverted = FALSE,
  .name = "md",
  .p = "p_value",
  tolerance = .Machine$double.eps
)

Arguments

df	A data.frame
...	Columns to select
.inverted	Logical. If TRUE, covariance matrix (p x p) of the distribution is supposed to contain the inverse of the covariance matrix.
.name	The name of the new column for the distance value
.p	The name for the new column for the p-value calculation
tolerance	'tol' in [base::solve()]

Examples

df <- head(iris)
add_mahalanobis(df, Sepal.Length, Sepal.Width, Petal.Length, Petal.Width)
df[1, ] <- NA_real_
add_mahalanobis(df, Sepal.Length, Sepal.Width, Petal.Length, Petal.Width)

jmbarbone/jordanExtra documentation built on April 13, 2025, 3:28 a.m.