R: Box Cox transformation

boxcox

R Documentation

Box Cox transformation

Simple Box Cox, with no optimisation of lambda.

boxcox(x, lambda, makepos = TRUE, na.rm = FALSE)

`x`	A vector or column of data to transform
`lambda`	The lambda parameter of the Box Cox transform
`makepos`	If `TRUE` (default) makes all values positive by subtracting the minimum and adding 1.
`na.rm`	If `TRUE`, `NA`s will be removed: only relevant if `makepos = TRUE` which invokes `min()`.

This function replaces the now-defunct BoxCox() from COINr < v1.0.

A vector of length length(x) with transformed values.

# example data
x <- runif(30)
# Apply Box Cox
xBox <- boxcox(x, lambda = 2)
# plot one against the other
plot(x, xBox)