I think we need a bit more information and perhaps a small example data set to see what you want.
I am not familiar with term mass window. Is this a confidence interval around the mass value? --- Johannes Graumann <[EMAIL PROTECTED]> wrote: > Dear All, > > I have a data frame with the columns "Mass" and > "Intensity" (this is mass > spectrometry stuff). Each of the mass values gives > rise to a mass window of > 5 ppm around the individual mass (from mass - > mass/1E6*5 to mass + > mass/1E5*5). I need to filter the array such that in > case these mass > windows overlap I retain the mass/intensity pair > with the highest > intensity. > I apologize for this question, but I have no formal > IT education and would > value any nudges toward favorable algorithmic > solutions highly. > > Thanks for any help, > > Joh > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, > reproducible code. > ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.