Re: [Rd] Formatting of times in time series objects

From: Prof Brian Ripley <ripley_at_stats.ox.ac.uk>
Date: Wed 10 Nov 2004 - 22:08:59 EST


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

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Received on Wed Nov 10 22:55:22 2004

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