Re: ppm for UPLC and QTOF
Reply #10 –
anlin,
?findPeaks.centWave
#starting httpd help server
This means that for each mass trace ie a single feature in the current sample the peak detector is looking at it will use k scans with an intensity above I. The documentation could be written a bit clearer I agree.
Next, the parameters you're seeing are in xcmsOnline. These are only parameters to limit the reporting back of the information.
statistics.threshold.pvalue: 0.001 This is pvalue threshold they use for reporting or probably in the cloud plot
statistics.diffReport.value : This is simple if the peak detector value is going to use the integrated peak intesity (into) or the maximal peak intensity (maxo).
Also please start new comment threads for new topics. It helps others find information to answer their questions.
Cheers,
Paul