On Wed, Mar 30, 2016 at 10:29 AM, Bert Gunter <bgunter.4...@gmail.com> wrote: > I "think" the problem is that you failed to set the "frequency" > attribute of your time series, so it defaults to 1. A time series with > one observation per period cannot be decomposed, since the error term > is confounded with the "seasonality", which is essentially your error > message. > > Again, a guess, as you provided no code. > Another guess is that you're running into issues with converting xts to/from ts. That currently doesn't work well, so you should convert to zoo and make sure your frequency attribute makes sense before attempting to decompose.
> Cheers, > Bert > > > Bert Gunter > > "The trouble with having an open mind is that people keep coming along > and sticking things into it." > -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) > > > On Wed, Mar 30, 2016 at 8:18 AM, Bert Gunter <bgunter.4...@gmail.com> wrote: >> Code please. >> >> Reproducible example?(e.g. 1st 100 values) >> >> "PLEASE do read the posting guide http://www.R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, reproducible code." >> >> Bert Gunter >> >> "The trouble with having an open mind is that people keep coming along >> and sticking things into it." >> -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) >> >> >> On Wed, Mar 30, 2016 at 8:03 AM, Ryan Utz <utz.r...@gmail.com> wrote: >>> Hello, >>> >>> I have a time series that represents data sampled every 15-minutes. The >>> data currently run from November through February, 8623 total readings. >>> There are definitely daily periodic trends and non-stationary long-term >>> trends. I would love to decompose this using basic time series analysis. >>> >>> However, every time I attempt decomposition, I get the >>> >>> Error in decompose( ) : time series has no or less than 2 periods >>> >>> Is it only possible to do basic time-series analysis if you have a year or >>> more worth of data? That seems absurd to me, since there is definite >>> periodicity and the data are a time series. I have tried every manner of >>> specifying frequency= with no luck (96 does not work). All manner of >>> searching for help has turned up fruitless. >>> >>> Can I only do this after I wait another year or two? >>> >>> Thanks, >>> Ryan >>> >>> -- >>> >>> Ryan Utz, Ph.D. >>> Assistant professor of water resources >>> *chatham**UNIVERSITY* >>> Home/Cell: (724) 272-7769 >>> >>> [[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. > > ______________________________________________ > 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. -- Joshua Ulrich | about.me/joshuaulrich FOSS Trading | www.fosstrading.com R/Finance 2016 | www.rinfinance.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.