From Kurt.Hornik at wu-wien.ac.at  Tue Dec 11 16:20:22 2007
From: Kurt.Hornik at wu-wien.ac.at (Kurt.Hornik at wu-wien.ac.at)
Date: Tue, 11 Dec 2007 16:20:22 +0100 (CET)
Subject: [Rd] [Kurt.Hornik@wu-wien.ac.at: Re: range( <dates>,
	na.rm = TRUE )] (PR#10508)
Message-ID: <20071211152022.342B0282EFF8@mail.pubhealth.ku.dk>

------- 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 = 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>
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>>>>> Steve Mongin writes:

> Dear CRAN:
> I am running 'R' on Linux as follows:

>> version
>                _                           
>   platform       i686-redhat-linux-gnu       
>   arch           i686                        
>   os             linux-gnu                   
>   system         i686, linux-gnu             
>   status                                     
>   major          2                           
>   minor          6.0                         
>   year           2007                        
>   month          10                          
>   day            03                          
>   svn rev        43063                       
>   language       R                           
>   version.string R version 2.6.0 (2007-10-03)


> I have a question about the behavior of "range()" with missing dates.

> With the previous version (2.4?) , the command:

>> range( as.Date( c( "2007-11-06", NA ) ), na.rm = TRUE )

> yielded:

>> [1] "2007-11-06" "2007-11-06"

> Now I get:

>> [1] NA NA

> Is this a bug?

> Yes, I see in the "What's New" page:

>   "The Math2 and Summary groups (round, signif, all, any, max, min,
>    summ, prod, range) are now primitive."

> Is the "primitive" characteristic supposed to behave as above with
> missing dates?

> Thanks for any help that you can provide.

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?

Best
- -k
------- End of forwarded message -------



[Rd] [Kurt.Hornik@wu-wien.ac.at: Re: range( <dates>, na.rm = TRUE )] (PR#10508)
Kurt.Hornik at wu-wien.ac.at