fillPeaks-methods: Integrate areas of missing peaks

In xcms: LC-MS and GC-MS Data Analysis

Description

For each sample, identify peak groups where that sample is not represented. For each of those peak groups, integrate the signal in the region of that peak group and create a new peak.

Arguments

object	the xcmsSet object
method	the filling method

Details

After peak grouping, there will always be peak groups that do not include peaks from every sample. This method produces intensity values for those missing samples by integrating raw data in peak group region. According to the type of raw-data there are 2 different methods available. for filling gcms/lcms data the method "chrom" integrates raw-data in the chromatographic domain, whereas "MSW" is used for peaklists without retention-time information like those from direct-infusion spectra.

Value

A xcmsSet objects with filled in peak groups.

Methods

object = "xcmsSet"

fillPeaks(object, method="")

See Also

xcmsSet-class, getPeaks

xcms documentation built on Nov. 8, 2020, 5:13 p.m.