Met.Norm {Metabonomic} | R Documentation |
Types of variable normalization
Met.Norm(datos)
datos |
Spectra data frame |
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.
Jose L. Izquierdo izquierdo@ieb.ucm.es
clusterSim package http://finzi.psych.upenn.edu/R/library/clusterSim/html/data.Normalization.html