R Help Community I'm trying to understand time series (TS) objects. Thought I understood but recently have run into a series of error messages that I'm not sure how to handle. I have 15 years of quarterly data and I typically create a TS object via something like...
data.ts <- ts(mydata, start = 2002, frequency = 4) this create a matric as opposed to a vector object as I receive a univariate error when I try to decompose the data using the STL function data.stl <- stl(data.ts, "periodic") Error in stl(data.ts, "periodic") : only univariate series are allowed ok so is.vector(data.ts) [1] FALSE so to convert to a vector I'll use data.ts <- as.vector(data.ts) but then I lose the frequency as the periods as the data becomes frequency = 1 data.ts <- stl <- stl(data.ts, "periodic") Error in stl(data.ts, "periodic") : series is not periodic or has less than two periods. So am I missing a parameter or is there a more general/proper way to create a time series object? First time I've run into this problem . I can always decompose via an alternative methods so there are work arounds. But just trying to understand what I'm not doing programmatically at this point. Jeff Reichman ______________________________________________ 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.
