--- a +++ b/OmicsFold/man/normalise.logit.empirical.Rd @@ -0,0 +1,31 @@ +% Generated by roxygen2: do not edit by hand +% Please edit documentation in R/MixMC.R +\name{normalise.logit.empirical} +\alias{normalise.logit.empirical} +\title{Normalise using the logit function in an empirical manner} +\usage{ +normalise.logit.empirical(input) +} +\arguments{ +\item{input}{Data frame of input compositional data to normalise. Input data +should be proportions 0-1.} +} +\value{ +Data normalised using empirical logit. Proportions below 0.5 will be +negative, but output will not tend to infinity for zero or 1 input. +} +\description{ +Apply the empirical logit normalisation to a data frame of omics input data. +This is intended to convert compositional data, e.g. proportional data in the +range 0..1, to Euclidean space which is most appropriate for the linear +models. The empirical logit function differs for standard logit normalisation +in that an epsilon factor is added to ensure that function does not tend to ++/- infinity for input values close to 100\% and 0\% respectively. The logit +or empirical logit function will be a more appropriate choice than centred +log-ratio (CLR) for non-OTU data. +} +\examples{ +\dontrun{ +normalise.logit.empirical(data.proportional) +} +}