Multiple Classes in XCMS December 28, 2013, 11:22:21 PM Good day everyone and Happy Holidays,I have a question regarding XCMS and its treatment of multiple classes. For example, I have three groups of Data: control, 50ppm Ni treated samples, 150ppm Ni treated samples.Is it possible to fit all of the three data in one xcms run in R, or should I only do them two at a time? I am planning to do PCA directly after the fillPeaks step. Case (I): control, 50ppm and 150ppm -> xcms -> PCACase (II): control and 50ppm -> xcms50ppm and 150ppm -> xcms control and 150ppm -> xcms then everything PCAThank you very much sincerely,Greg Quote Selected