Although print.ts() formats times pleasantly when it prints
regular multivariate time series (at least for suitable series)
(try e.g.
> xy <- cbind(window(AirPassengers, end =1950), 1:11)
> window(xy, end=1949)
xy seqno
Jan 1949 112 1
)
I can find no immediate way to extract the pleasantly
formatted date. I am wondering what plans there may be
to modify format() to provide a choice of formats for the times
in ts objects [presumably via as.Date(), rather than by code
such as in print.ts()], or if some other solution is in view.
John Maindonald email: john.maindonald@anu.edu.au
phone : +61 2 (6125)3473 fax : +61 2(6125)5549
Centre for Bioinformation Science, Room 1194,
John Dedman Mathematical Sciences Building (Building 27)
Australian National University, Canberra ACT 0200.
Formatting of times in time series objects
2 messages · John Maindonald, Brian Ripley
On Wed, 10 Nov 2004, John Maindonald wrote:
Although print.ts() formats times pleasantly when it prints regular multivariate time series (at least for suitable series) (try e.g.
> xy <- cbind(window(AirPassengers, end =1950), 1:11)
I get an error here, as I should.
> window(xy, end=1949)
xy seqno Jan 1949 112 1 ) I can find no immediate way to extract the pleasantly formatted date. I am wondering what plans there may be to modify format() to provide a choice of formats for the times in ts objects [presumably via as.Date(), rather than by code such as in print.ts()], or if some other solution is in view.
No plans. ts() objects do not in fact contain the times, just a tsp attribute, but it is easy enough to write code to get what you want.
Brian D. Ripley, ripley@stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595