Hello,
today I've updated on the newest R-Version. But sadly a function I needed
didnt want to work:
The input is e.g.
days(as.Date("21-07-2005","%d-%m-%y"))
the error is: Fehler in Math.Date(dts): floor nicht definiert f??r Date
Objekte
(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 ?
Carsten
I think its likely that you are using different versions of chron.
I noticed that version "2.2-33" of chron had the statement:
tms <- dts - trunc(dts)
but version "2.2-35" seems to have replaced it with:
tms <- dts - floor(dts)
and that seems to be causing the problem.
As a workaround:
floor.Date <- floor.trunc
days(as.Date("21-07-2005", "%d-%m-%y"))
On 7/19/05, Carsten Steinhoff <carsten.steinhoff at
stud.uni-goettingen.de> wrote:> Hello,
>
> today I've updated on the newest R-Version. But sadly a function I
needed
> didnt want to work:
> The input is e.g.
>
> days(as.Date("21-07-2005","%d-%m-%y"))
>
> the error is: Fehler in Math.Date(dts): floor nicht definiert f??r Date
> Objekte
> (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 ?
>
> Carsten
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide!
http://www.R-project.org/posting-guide.html
>
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
as.POSIXlt(x)$mday
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
documentation.
> The input is e.g.
>
> days(as.Date("21-07-2005","%d-%m-%y"))
>
> the error is: Fehler in Math.Date(dts): floor nicht definiert f?r Date
> Objekte
> (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