Met.Norm {Metabonomic}R Documentation

Normalization

Description

Types of variable normalization

Usage

Met.Norm(datos)

Arguments

datos Spectra data frame

Details

A crucial step in data pre-processing of spectra from metabonomic studies is the so-called normalization. The normalization step tries to account for possible variations in sample concentrations. Normalization can also be necessary due to technical reasons. If spectra are recorded using a different number of scans or if spectra are recorded with different devices, the absolute values of the spectra are different and rendering a joint analysis of spectra without prior normalization is impossible. The normalization graphical application (Preprocesing / Normalization) allows choosing between several types of normalizations using functions from the clusterSim library. Launched with the GUI. Beta version.

Author(s)

Jose L. Izquierdo izquierdo@ieb.ucm.es

References

clusterSim package http://finzi.psych.upenn.edu/R/library/clusterSim/html/data.Normalization.html


[Package Metabonomic version 3.1.2 Index]