I'm trying to create a GC-MS database of standard by using XCMS. I'm using findChromPeaks (with centWave method) to search for my standard peak followed by refineChromPeaks and groupChromPeaks.
I can get the value of each feature with featureValues, but I would like to get the mz (or mz range) corresponding to each of these features in order to build my standard spectrum.
Thank you in advance.
Best regards, Julien