Skip to main content ↑ ↓

Topics

This section allows you to view all Topics made by this member. Note that you can only see Topics made in areas you currently have access to.

Topics - bo2014

4
XCMS Online / Default parameter setting for UPLC-G2S MS
Hi,
Does anyone know why the default value for prefilter intensity is 500 and for noise is 0 in XCMS Online? Usually, how should we change the default value?
Thank you in advance.
Best regards!
Bo
6
XCMS / XCMS for UPLC-Waters G2-S Q-TOF
Hi All,
Does anyone know how to set the parameters of XCMS for the data generated by UPLC-Waters G2-S Q-TOF?
My code is below, is it good for that data?
xset<-xcmsSet(cdffiles,
                        method="centWave",
                        ppm=15,
                        peakwidth=c(2,25),
                        snthresh=10,
                        prefilter=c(3,500),
                        mzCenterFun="wMean",
                        integrate=2,
                        mzdiff=0.01,
                        noise=0,
                        verbose.columns=TRUE,
                        fitgauss=FALSE,
                        sleep=0,
                        polarity="positive"
                        )
Best regards!
Bo