Performs the grouping (correspondence) of chromatographic peaks within and between samples. Uses the groupChromPeaks() (density algorithm) function of the [XCMS](https://pubs.acs.org/doi/10.1021/ac051437y) R package. Outputs a XCMSExperiment artifact with the property “grouped”. 
Performs the grouping (correspondence) of chromatographic peaks within and between samples.
Uses the groupChromPeaks() (density algorithm) function of the XCMS R package.
Outputs a XCMSExperiment artifact with the property “grouped”.