xcms - error in row.names January 04, 2017, 03:41:45 AM I saw numerous post about errors in row.names with xcms but I didn't find a solution. This is my script with my problem :#Packageslibrary(Biobase)library(xcms)library(multtest)library(ade4)library(RVAideMemoire)#Peakpicking (I have low res data so I use matchedFilter)xset<-xcmsSet(method="matchedFilter",step=0.2,steps=2,mzdiff=0.4, fwhm=30,snthresh=10)#alignementxset<-group(xset,bw=30,minfrac=0.5, mzwid=0.25,max=50,sleep=0)#time correctionxset2<-retcor(xset,method="obiwarp",plottype=c("deviation"),profStep=1)#alignement> xset3<-group(xset2,bw=10,minfrac=0.5,mzwid=0.25,max=50,sleep=0)#fillpeaksxset4<-fillPeaks(xset3)#report tablereporttab <- diffreport(xset4, "QC", "blanc", "MatriceBC", 1000,metlin = 0, h=480, w=640)In data.row.names(row.names, rowsi, i) : some row.names duplicated: 651,746,866,2311,2609,3828,6151,6579,6632,7542,7874,8143,8597,er --> row.names NOT usedThe row.names correspond to the first column of my matrice (number). I think that the duplicated row.names are removed of my matrice. Indeed, I don't see duplicate row.names in my matrice and it's write "NOT used" in the warning message.I have multiples files (160) in different folders but all the filename are different. I think that there is a problem with the alignment. Do you know how to solve this error and why row.names duplicated appears?Thank you so much,HAPPY NEW YEAR Isis.