Hello Alberto, hello Felix, aside of monthplot() and stl(), there is the possibility to use Census X-12-ARIMA. The program can be downloaded from:
http://www.census.gov/srd/www/x12a/ It should be mentioned that this is *not* a pure R solution, but one can set up the relevant scripts and output files and call the program from R and read in the relevant numbers back into R again. Best, Bernhard >?monthplot > >?stl > > >On 8/10/07, Alberto Monteiro <[EMAIL PROTECTED]> wrote: >> I have a time series x = f(t), where t is taken for each >> month. What is the best function to detect if _x_ has a seasonal >> variation? If there is such seasonal effect, what is the >> best function to estimate it? >> >> Function arima has a "seasonal" parameter, but I guess this is >> too complex to be useful. >> >> Alberto Monteiro >> >> ______________________________________________ >> 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. >> > > >-- >Felix Andrews / 安福立 >PhD candidate >Integrated Catchment Assessment and Management Centre >The Fenner School of Environment and Society >The Australian National University (Building 48A), ACT 0200 >Beijing Bag, Locked Bag 40, Kingston ACT 2604 >http://www.neurofractal.org/felix/ >voice:+86_1051404394 (in China) >mobile:+86_13522529265 (in China) >mobile:+61_410400963 (in Australia) >xmpp:[EMAIL PROTECTED] >3358 543D AAC6 22C2 D336 80D9 360B 72DD 3E4C F5D8 > >______________________________________________ >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. > ***************************************************************** Confidentiality Note: The information contained in this mess...{{dropped}} ______________________________________________ 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.
