Try this to append 100 to the end of the series, say: tt <- ts(1:12, frequency=5) # sample data ts(c(tt, 100), start = start(tt), frequency = frequency(tt))
On Mon, Sep 22, 2008 at 2:17 AM, <[EMAIL PROTECTED]> wrote: > I have been working with the base time series object (ts) and I had a couple > of questions that hopefully this group can help me with: > > 1) What is the best why to append an observation to an existing time-series? > Suppose I have a time series: > > t <- ts(1:12, frequency=5) > > This would generate two complete cycles and one remainder. Now I would like > to append an observation to this time series. I could use 'c' but then I > would need to rebuild the whole time series and I would need to know the > frequency etc. I would like some operation like '+' that would simply append > the value to the end of the time series (incrementing the 'las time value so > thing like cycle() still output the correnct values) but alas > > t + 10 > > is already taken as an equally useful operation by adding 10 to each element > in the time series (rather than in thie case, appending ts(10,frequency) with > a time value of 13 to the time series). > > 2) How is the best way to get the last time value in a time series? I can do > something like: > > (start(t)[2] - 1) + (end(t)[1]-1) * frequency(t) + end(t)[2] > > But there has to be an easier way. > > Thank you. > > Kevin > > ______________________________________________ > 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.
