Qdata: Retrieve Relative Abundance Values

In hhabra/Combiner: Method for Combining LC-MS Metabolomics Feature Measurements

Retrieve Relative Abundance Values

Description

This retrieves feature Q values from one or all constituent dataset features of a metabCombiner object. Alternatively, the average Q value can be retrieved.

Usage

Qdata(object, data = NULL, value = c("obs", "mean"))

## S4 method for signature 'metabCombiner'
Qdata(object, data = NULL, value = c("obs", "mean"))

Arguments

object	metabCombiner object
data	dataset identifier to extract information from; if NULL, extracts information from all datasets
value	Either "obs" (observed - default option) or "mean" average value

Value

data frame or vector of relative ranked abundance (Q) values

data(plasma30) data(plasma20)

p30 <- metabData(head(plasma30,500), samples = "CHEAR") p20 <- metabData(head(plasma20,500), samples = "Red") p.comb <- metabCombiner(p30, p20, xid = "p30", yid = "p20")

##retrieve all Q Q <- Qdata(p.comb, data = NULL)

##retrieve Q from p30 Q <- Qdata(p.comb, data = "p30")

##retrieve mean Q Q <- Qdata(p.comb, value = "mean")

hhabra/Combiner documentation built on Sept. 13, 2022, 11:34 a.m.