You already know the answer. Why ask? -- Sent from my phone. Please excuse my brevity.
On September 1, 2017 7:23:24 AM PDT, Andrea Altomani <altomani.and...@gmail.com> wrote: >I have a time series x, and two other series obtained from it: > >x <- structure(2017, .Tsp = c(2017.41666666667, 2017.41666666667, 12), >class = "ts") >y <- floor(x) >z <- x-y > >I would expect the three series to have exactly the same index. >However I get the following > >> time(x)-time(y) > Jun >2017 0 > >as expected, but > >> time(x)-time(z) >integer(0) >Warning message: >In .cbind.ts(list(e1, e2), c(deparse(substitute(e1))[1L], >deparse(substitute(e2))[1L]), : > non-intersecting series > >and indeed, comparing the indices gives: > >> time(x)[1]-time(z)[1] >[1] 3.183231e-12 > >Is this a bug in R, or is it one of the expected precision errors due >to the use of limited precision floats? > >I am using R 3.4.0 (2017-04-21) on Windows (64-bit). > >Thaks! > >Andrea Altomani > >______________________________________________ >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.
