What makes you think those are the only two options? I happen to prefer the xts convention, but there is a lot of code out there that successfully uses ts just as it is, and I can't see breaking all of that to meet an arbitrary preference of sign convention. (It isn't my decision anyway...) --------------------------------------------------------------------------- Jeff Newmiller The ..... ..... Go Live... DCN:<jdnew...@dcn.davis.ca.us> Basics: ##.#. ##.#. Live Go... Live: OO#.. Dead: OO#.. Playing Research Engineer (Solar/Batteries O.O#. #.O#. with /Software/Embedded Controllers) .OO#. .OO#. rocks...1k --------------------------------------------------------------------------- Sent from my phone. Please excuse my brevity.
jpm miao <miao...@gmail.com> wrote: > Example: >Will ts objects be obsolete or modified? > >> a [,1] >1983 Q1 2.747365190 >1983 Q2 2.791594762 >1983 Q3 -0.009953715 >1983 Q4 -0.015059485 >1984 Q1 -1.190061246 >1984 Q2 -0.553031799 >1984 Q3 0.686874720 >1984 Q4 0.953911035> lag(a,4) [,1] >1983 Q1 NA >1983 Q2 NA >1983 Q3 NA >1983 Q4 NA >1984 Q1 2.747365190 >1984 Q2 2.791594762 >1984 Q3 -0.009953715 >1984 Q4 -0.015059485> lag(as.ts(a, start=c(1983,1)),4) >Qtr1 Qtr2 Qtr3 Qtr4 >1982 2.747365190 2.791594762 -0.009953715 -0.015059485 >1983 -1.190061246 -0.553031799 0.686874720 0.953911035 > > [[alternative HTML version deleted]] > >______________________________________________ >R-help@r-project.org 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. ______________________________________________ R-help@r-project.org 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.