[Rd] range( <dates>, na.rm = TRUE ) (PR#10508)
P.Dalgaard at biostat.ku.dk
P.Dalgaard at biostat.ku.dk
Tue Dec 11 17:05:14 CET 2007
(Drats! Jitterbug is playing tricks with the PR# again. Attempting to
refile so that we can kill PR#10509)
Peter Dalgaard wrote:
> Kurt.Hornik at wu-wien.ac.at wrote:
> =20
>> ------- Start of forwarded message -------
>> Date: Tue, 13 Nov 2007 21:44:57 +0100
>> To: Steve Mongin <sjm at ccbr.umn.edu>
>> Cc: cran at r-project.org
>> Subject: Re: range( <dates>, na.rm =3D TRUE )
>> In-Reply-To: <200711062044.OAA14064 at minnow.ccbr.umn.edu>
>> Reply-To: Kurt.Hornik at wu-wien.ac.at
>> From: Kurt Hornik <Kurt.Hornik at wu-wien.ac.at>
>> X-AntiVirus: checked by AntiVir MailGate (version: 2.1.3-2; AVE: 7.6.0=
=2E34; VDF: 7.0.0.210; host: fsme.wu-wien.ac.at)
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>>
>> =20
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>>>>>>> Steve Mongin writes:
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>>>>>>> =20
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>>> Dear CRAN:
>>> I am running 'R' on Linux as follows:
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>>>> version
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>>> _ =20
>>> platform i686-redhat-linux-gnu =20
>>> arch i686 =20
>>> os linux-gnu =20
>>> system i686, linux-gnu =20
>>> status =20
>>> major 2 =20
>>> minor 6.0 =20
>>> year 2007 =20
>>> month 10 =20
>>> day 03 =20
>>> svn rev 43063 =20
>>> language R =20
>>> version.string R version 2.6.0 (2007-10-03)
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>>> I have a question about the behavior of "range()" with missing dates.=
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>>> With the previous version (2.4?) , the command:
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>>>> range( as.Date( c( "2007-11-06", NA ) ), na.rm =3D TRUE )
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>>> yielded:
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>>>> [1] "2007-11-06" "2007-11-06"
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>>>> =20
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>>> Now I get:
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>>>> [1] NA NA
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>>> Is this a bug?
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>>> Yes, I see in the "What's New" page:
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>>> "The Math2 and Summary groups (round, signif, all, any, max, min,
>>> summ, prod, range) are now primitive."
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>>> Is the "primitive" characteristic supposed to behave as above with
>>> missing dates?
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>>> Thanks for any help that you can provide.
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>> This is really a question for r-devel or r-bugs, I think, but not for
>> the CRAN maintainers.
>>
>> I would think it is a bug. Perhaps simply file a bug report?
>>
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> Again? ;-)
>
> The bug is here:
>
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>> range.default
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> function (..., na.rm =3D FALSE, finite =3D FALSE)
> {
> x <- c(..., recursive =3D TRUE)
> if (is.numeric(x)) {
> if (finite)
> x <- x[is.finite(x)]
> else if (na.rm)
> x <- x[!is.na(x)]
> }
> c(min(x), max(x))
> }
> <environment: namespace:base>
>
> Objects of class Date are not considered numeric, so we end up taking
> min and max without removing NA.
>
> One solution could be
>
> if (is.numeric(x) || inherits(x, "Date") ){....}
>
>
> =20
--=20
O__ ---- Peter Dalgaard =C3=98ster Farimagsgade 5, Entr.B=
c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327=
918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327=
907
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