Thank you Joshua for your valuable help, It just works fine now ! Regards, O.
Olivier ETERRADOSSI Maître-Assistant HDR Ingénierie de l’aspect visuel et tactile C2MA – Pôle R.I.M.E. (site de Pau) Ecole des mines d’Alès Technopole Hélioparc 2 av. P. Angot 64053 PAU Cedex 9 France -----Message d'origine----- De : Joshua Ulrich [mailto:josh.m.ulr...@gmail.com] Envoyé : vendredi 22 janvier 2016 18:23 À : Olivier ETERRADOSSI Cc : R-Help Objet : Re: [R] unexpected behaviour of an extended time series (using packages spuRs and xts) Try using the latest xts on GitHub: https://github.com/joshuaulrich/xts On Thu, Jan 14, 2016 at 9:05 AM, Olivier ETERRADOSSI <olivier.eterrado...@mines-ales.fr> wrote: > Hi list, > > > > I thought I knew how to use extended time series (package xts), but I > was wrong J … > > > > While preparing a toy example for something else, using data provided > in R, I run into an unexpected problem and can’t figure by myself what > is happening below, can anyone of you tell ? I searched the archives > but didn’t locate any answer. Probably it’s trivial, so please forgive : > > > > I’m using : > > R version 3.2.3 (2015-12-10) -- "Wooden Christmas-Tree" / Platform: > x86_64-w64-mingw32/x64 (64-bit) > > Packages are updated weekly, sometimes daily. > > > > I take some data from package spuRs : > >> library(spuRs) > >> data(kew) > > > > I turn the dataframe into time series (by combining each kew[,2:13] > one after each other into a vector, and turning the vector into time > series). > > > > One is ts : > > > >> > kew.ts<-ts(data=stock,start=kew$year[1],end=kew$year[length(kew$year)] > ,fre > quency=12) > > > > And the other is xts, it looks fine at first : > > > >> kew.xts<-as.xts(kew.ts) > >> periodicity(kew.xts) > > Monthly periodicity from janv. 1697 to janv. 1999 # OK > >> hist(kew.xts) # OK > >> summary(kew.xts) > > Index kew.xts > > Min. :1697 Min. : 0.00 > > 1st Qu.:1772 1st Qu.: 29.70 > > Median :1848 Median : 47.00 > > Mean :1848 Mean : 51.14 > > 3rd Qu.:1924 3rd Qu.: 67.60 > > Max. :1999 Max. :189.00 # OK > > > >> gdata::is.what(kew.xts) > > [1] "is.array" "is.atomic" "is.double" > "is.index.unique" > > [5] "is.matrix" "is.numeric" "is.object" "is.regular" > > > [9] "is.time.unique" "is.unsorted" "is.xts" "is.zoo" > # seems OK > > > > > > # But now, first try : > >> plot(kew.xts) > > Error in if (on == "years") { : > > valeur manquante là où TRUE / FALSE est requis # french for « > missing value where TRUE/FALSE is required » > > > > # hmmmm, let’s try something else : > >> plot(kew.xts['1697-01/1979/']) # OK > > > >> plot(kew.xts['1697-01/1980/']) > > Error in if (on == "years") { : > > valeur manquante là où TRUE / FALSE est requis > > > >> plot(kew.xts['1697-01/1979-12/']) # OK > > > >> plot(kew.xts['1697-01/1980-01/']) > > Error in if (on == "years") { : > > valeur manquante là où TRUE / FALSE est requis > > > > # but…! : > > > >> plot(kew.xts['1979-01/1980/']) # OK !!!!! > > > > And so are : > >> plot (kew.xts['1978/1980/']) > >> plot(kew.xts['1977/1982/']) > >> plot(kew.xts['1977-01/1982-12']) # and so on… > > > > I’m puzzled ! I have probably missed a trivial point… Can someone tell ? > > > > Thanks a lot list, regards, Olivier > > > > -------------------------- > > Olivier ETERRADOSSI > > Maître-Assistant, HDR > > Ecole des Mines d’Alès (C2MA, site de Pau) > > Ingénierie de l'aspect visuel et tactile des matériaux > > Pôle « Recherche sur les Interactions des Matériaux avec leur > Environnement » (RIME) > > Hélioparc, 2 av. P. Angot, F-64053 PAU CEDEX 9 > > Tel : 05 59 30 90 35 (direct) - 05 59 30 54 25 (std) > > Fax : 05 59 30 63 68 > > <http://www.mines-ales.fr/> http://www.mines-ales.fr > > <http://www.mines-telecom.fr/> http://www.mines-telecom.fr > > > > > > > > > [[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. -- 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.
