renorm: Renormalize Spectra

In PROcess: Ciphergen SELDI-TOF Processing

Description

Renormalize spectra for m/z values greater than ‘cutoff’.

Usage

renorm(Ma, cutoff)

Arguments

Ma	a matrix, with rows the m/z values and the columns the samples.
cutoff	a real value, before which the portion of a spectrum will be ignored.

Details

A sample of spectra will be normalized to have the same AUC, the median of the AUCs of spectra. Each AUC is calculated as the sum of the intensities whose m/z values are greater than ‘cutoff’.

Value

A matrix, with rows the m/z values and the columns the samples. Only rows with m/z values greater than ‘cutoff’ are kept.

Examples

example(rmBaseline)
rtM <- renorm(testM, cutoff=1500)

PROcess documentation built on Nov. 8, 2020, 5:44 p.m.