Have you tried signal package? SF Il 06/set/2015 17:14, "AltShift" <allennug...@hotmail.com> ha scritto:
> I need a function for regularising the time base of electronically acquired > signals (i.e. vectors of samples with a nominally constant time base). > > For example, the accelerometer in my smartphone can deliver data at about > 50 > Hz, but the sampling rate varies by about 5% throughout a recording. I have > developed signal processing functions that assume a constant sample rate, > so > I need to modify my input data vectors so that this assumption becomes > true. > Furthermore, if I want to combine signals from different sources that have > different sampling rates, I will be obliged to harmonise the time bases, > somehow. > > I have written routines in other languages to interpolate (generate a > larger > number of regularly spaced samples from the input series) or, what I call, > "intrapolate" (generate a smaller number of regularly spaced samples from > the input series), so it wouldn't be too hard form me to write a function > that covers both, but I prefer not to reinvent wheels (unless my wheel is > markedly better!) > > Can anyone tell me if there is already a package that might cover what I > need? > > > > > -- > View this message in context: > http://r.789695.n4.nabble.com/Is-there-a-time-series-resampling-function-tp4711907.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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. > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.