extractor for xcms objects in preparation for clustering
rc.cmpd.filter.cv(ramclustObj = NULL, qc.tag = "QC", max.cv = 0.5)
ramclustR object with total extracted ion normalized data.
ramclustObj containing MSdata with optional MSMSdata (MSe, DIA, idMSMS)
character vector of length one or two. If length is two, enter search string and factor name in $phenoData slot (i.e. c("QC", "sample.type"). If length one (i.e. "QC"), will search for this string in the 'sample.names' slot by default.
numeric maximum allowable cv for any feature. default = 0.3
Corey Broeckling
This function offers normalization by total extracted ion signal. it is recommended to first run 'rc.feature.filter.blanks' to remove non-sample derived signal.
Broeckling CD, Afsar FA, Neumann S, Ben-Hur A, Prenni JE. RAMClust: a novel feature clustering method enables spectral-matching-based annotation for metabolomics data. Anal Chem. 2014 Jul 15;86(14):6812-7. doi: 10.1021/ac501530d. Epub 2014 Jun 26. PubMed PMID: 24927477.