mahal_dist: Mahalanobis Distance

In Swarchal/phenoDist: Distance Measurements in Phenotypic Screening

Description

Calculates a Mahalanobis distance of a dataframe or a matrix. Option for robust centroid location.The Mahalanobis distance is a measure of distance between a point and a distribution. In this simplified case it's the difference between each point and centroid of the distribution produced by the points.

Usage

mahal_dist(x, center = "mean", na.rm = TRUE)

Arguments

x	Dataframe or matrix of numerical values
center	Method to calculate distribution center, either mean or median
na.rm	Whether to remove missing values for centroid calculation

Value

vector of distances

Examples

data(iris)

iris_values <- iris[,1:4]
mahal_dist(iris_values)
mahal_dist(iris_values, center = "median")

Swarchal/phenoDist documentation built on May 9, 2019, 3:25 p.m.