[R] Problems with date-format (R 2.1.1 + chron)
Prof Brian Ripley
ripley at stats.ox.ac.uk
Wed Jul 20 10:25:09 CEST 2005
x <- as.Date("21-07-2005","%d-%m-%y")
is base R, and gives you a object of class "Date".
days() is not part of R, and I guess from your subject is part of chron.
Its help page does not say what it actually does, but my guess is that it
finds days of the month, *for a "dates" object not a "Date" object*. Try
to get that.
On Tue, 19 Jul 2005, Carsten Steinhoff wrote:
> today I've updated on the newest R-Version. But sadly a function I needed
> didnt want to work:
It should never have worked, as you were using contrary to its
> The input is e.g.
> the error is: Fehler in Math.Date(dts): floor nicht definiert für Date
> (Error in Math.Date(dts): floor not defined for date objects)
> Same for year. Only months gives me the correct output.
> In Version 2.01 it worked very well, with the same chron library.
> Whats wrong ?
There is no version 2.01 of R: do see the posting guide!
Brian D. Ripley, ripley at 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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