The folded power transformation: The folded power transformation
Description
The folded power transformation.
Usage
fp(x, lambda)
Arguments
x
A matrix with the compositional data. Zero values are allowed.
lambda
The value of the power transformation, it has to be between -1 and 1. If zero values are present it has to
be greater than 0. If \(\lambda=0\) the additive log-ratio transformation (alr) is applied.
If zero values are present \(\lambda\) must be strictly positive.
Value
A matrix with the transformed data.
Details
The folded power transformation is applied to the compositional data.
References
Atkinson, A. C. (1985). Plots, transformations and regression; an introduction to graphical methods
of diagnostic regression analysis Oxford University Press.