On Jun 9, 2012, at 13:54 , R. Michael Weylandt wrote:
>>
>> as.Date(strftime(paste("1998",1:12,"09", sep = "-"), "%d %B %Y"), "%d %B %Y")
> [1] "1998-01-09" "1998-02-09" "1998-03-09" "1998-04-09" "1998-05-09"
> [6] "1998-06-09" NA "1998-08-09" "1998-09-09" "1998-10-09"
> [11] "1998-11-09" "1998-12-09"
Looks like this is
http://lists.freebsd.org/pipermail/freebsd-bugs/2009-December/037796.html
which was fixed in May 2010, but apparently hasn't percolated down to the OSX
updates yet.
(Still there in local build on Lion, so not just CRAN binaries. Insert
appropriate rant about Open Source and commercial vendors here...)
Summary of bug: strptime with %B goes through the months and checks for full
name, then abbreviation. Problem is that "jui" of "juillet" matches abbr. for
"juin"! but "llet" mismatches %Y and we get the NA.
--
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Email: [email protected] Priv: [email protected]
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