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MSnSet object.
They are organized in four main families : Strong Rescaling,
Median Centering, Mean Centering, Mean CenteringScaling.
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.
wrapper.normalizeD(obj, family, method)MSnSet.MSnSet
where the quantitative data in the exprs() tab
has been normalized.
data(UPSpep25)
wrapper.normalizeD(UPSpep25, "Median Centering", "within conditions")
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