cor_to_cov: Convert a correlation to covariance

In correlation: Methods for Correlation Analysis

Convert a correlation to covariance

Description

Convert a correlation to covariance

Usage

cor_to_cov(cor, sd = NULL, variance = NULL, tol = .Machine$double.eps^(2/3))

Arguments

cor	A correlation matrix, or a partial or a semipartial correlation matrix.
sd, variance	A vector that contains the standard deviations, or the variance, of the variables in the correlation matrix.
tol	Relative tolerance to detect zero singular values.

Value

A covariance matrix.

Examples

cor <- cor(iris[1:4])
cov(iris[1:4])

cor_to_cov(cor, sd = sapply(iris[1:4], sd))
cor_to_cov(cor, variance = sapply(iris[1:4], var))

correlation documentation built on April 6, 2023, 5:18 p.m.