featdata: Obtain Feature Metadata

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

Obtain Feature Metadata

Description

metabCombiner objects organize metabolomics feature information in the "featdata" slot. This method retrieves all metadata or that of one dataset. The rows should identically correspond to the same rows from the combinedTable data frame.

Usage

featdata(object, data = NULL)

## S4 method for signature 'metabCombiner'
featdata(object, data = NULL)

Arguments

object	a metabCombiner object
data	character dataset identifier

Value

data frame of feature metadata from one or all datasets

Examples

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")

#full metadata extraction
fdata <- featdata(p.comb, data = NULL)

#single dataset feature information extraction
fdata <- featdata(p.comb, data = "p20")

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