wrapper.normalizeD {DAPAR}R Documentation

Normalization

Description

Provides several methods to normalize quantitative data from a MSnSet object. They are organized in four main families : Global Alignment, Median Centering, Mean Centering, Mean Centering Scaling. For the first family, two sub-categories are available : the sum by columns and the quantiles method. For the three other families, two categories are available : "Overall" which means that the value for each protein (ie line in the expression data tab) is computed over all the samples ; "within conditions" which means that the value for each protein (ie line in the exprs() data tab) is computed condition by condition.

Usage

wrapper.normalizeD(obj, family, method)

Arguments

obj

An object of class MSnSet.

family

One of the following : Global Alignment, Median Centering, Mean Centering, Mean Centering Scaling.

method

"overall" or "within conditions".

Value

An instance of class MSnSet where the quantitative data in the exprs() tab has been normalized.

Author(s)

Alexia Dorffer

Examples

require(DAPARdata)
data(Exp1_R25_pept)
wrapper.normalizeD(Exp1_R25_pept[1:1000], "Median Centering", "within conditions")

[Package DAPAR version 1.10.4 Index]