Hi Simon,
The problem with as.Date is more complicated than I thought as even
with my system set to French (not Canadian French), I can easily
crash R (even the latest patched version from today) every single time
in a new session with this simple code:
french.dates <- c("7-déc-07", "11-déc-07", "14-déc-07", "18-déc-07",
"21-déc-07", "24-déc-07", "26-déc-07", "28-déc-07", "31-déc-07", "2-
jan-08", "4-jan-08", "7-jan-08", "9-jan-08", "11-jan-08", "14-
jan-08", "16-jan-08", "18-jan-08", "21-jan-08", "23-jan-08", "25-
jan-08", "28-jan-08")
as.Date(french.dates, "%d-%b-%y")
As you'll see below, this is in a brand new R session. I have
restarted R up to 5 times, this always crashes it. I give you
sessionInfo below.
But if I run this modified version, it works:
> french.dates <- c("7-déc-07", "11-déc-07", "14-déc-07", "18-
déc-07", "21-déc-07", "24-déc-07", "26-déc-07", "28-déc-07", "31-
déc-07", "2-jan-08", "4-jan-08", "7-jan-08", "9-jan-08", "11-
jan-08", "14-jan-08", "16-jan-08", "18-jan-08", "21-jan-08", "23-
jan-08", "25-jan-08", "28-jan-08")
>
> as.Date(french.dates)
Erreur dans fromchar(x) :
la chaîne de caractères n'est pas dans un format standard non ambigu
>
> as.Date(french.dates, "%d-%b-%y")
[1] "2007-12-07" "2007-12-11" "2007-12-14" "2007-12-18" "2007-12-21"
[6] "2007-12-24" "2007-12-26" "2007-12-28" "2007-12-31" "2008-01-02"
[11] "2008-01-04" "2008-01-07" "2008-01-09" "2008-01-11" "2008-01-14"
[16] "2008-01-16" "2008-01-18" "2008-01-21" "2008-01-23" "2008-01-25"
[21] "2008-01-28"
Cheers,
Denis
R version 2.6.2 RC (2008-01-30 r44258)
Copyright (C) 2008 The R Foundation for Statistical Computing
ISBN 3-900051-07-0
R est un logiciel libre livré sans AUCUNE GARANTIE.
Vous pouvez le redistribuer sous certaines conditions.
Tapez 'license()' ou 'licence()' pour plus de détails.
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Tapez 'contributors()' pour plus d'information et
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en ligne ou 'help.start()' pour obtenir l'aide au format HTML.
Tapez 'q()' pour quitter R.
> sessionInfo()
R version 2.6.2 RC (2008-01-30 r44258)
i386-apple-darwin9.1.0
locale:
fr_FR.UTF-8/fr_FR.UTF-8/fr_FR.UTF-8/C/fr_FR.UTF-8/fr_FR.UTF-8
attached base packages:
[1] stats graphics grDevices utils datasets methods base
> french.dates <- c("7-déc-07", "11-déc-07", "14-déc-07", "18-
déc-07", "21-déc-07", "24-déc-07", "26-déc-07", "28-déc-07", "31-
déc-07", "2-jan-08", "4-jan-08", "7-jan-08", "9-jan-08", "11-
jan-08", "14-jan-08", "16-jan-08", "18-jan-08", "21-jan-08", "23-
jan-08", "25-jan-08", "28-jan-08")
>
> as.Date(french.dates, "%d-%b-%y")
*** caught bus error ***
address 0x8, cause 'non-existent physical address'
Traceback:
1: strptime(x, format)
2: as.Date.character(french.dates, "%d-%b-%y")
3: as.Date(french.dates, "%d-%b-%y")
Possible actions:
1: abort (with core dump, if enabled)
2: normal R exit
3: exit R without saving workspace
4: exit R saving workspace
Le 31 janv. 08 à 13:33, [EMAIL PROTECTED] a écrit :
> Message: 3
> Date: Thu, 31 Jan 2008 13:33:03 -0500
> From: Simon Urbanek <[EMAIL PROTECTED]>
> Subject: Re: [R-SIG-Mac] R crashes with french canadian OS X format
> (was: [R] dates in French format)
> To: Denis Chabot <[EMAIL PROTECTED]>
> Cc: Gabor Grothendieck <[EMAIL PROTECTED]>,
> [email protected]
> Message-ID: <[EMAIL PROTECTED]>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed; delsp=yes
>
> Denis,
>
> thanks for the report. It should be now fixed in R-patched and R-
> devel.
>
> Cheers,
> Simon
>
>
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