[R] as.POSIXct month problem

William Dunlap
2009-10-26T20:39:19Z

> -----Original Message-----
> From: r-help-bounces at r-project.org
> [mailto:r-help-bounces at r-project.org] On Behalf Of guillaume chaumet
> Sent: Monday, October 26, 2009 1:32 PM
> To: r-help at r-project.org
> Subject: [R] as.POSIXct month problem
>
> Hi everybody
> When I try example of strptime
> x <- c("1jan1960", "2jan1960",
"31mar1960", "30jul1960")
> z <- strptime(x, "%d%b%Y")
>
> The result is;
>
> > z
> [1] NA NA NA NA
>
> I have got the same result with complete form of month but
> not with numeric
> form.

If you are not in an English 'locale' you may have to set
your locale to English.  E.g., on Windows:

  > Sys.setlocale(locale="French")
[1]"LC_COLLATE=French_France.1252;LC_CTYPE=French_France.1252;LC_MONETAR
Y=French_France.1252;LC_NUMERIC=C;LC_TIME=French_France.1252"
  > strptime(x, "%d%b%Y")
  [1] NA NA NA NA
  > Sys.setlocale(locale="English")
  [1] "LC_COLLATE=English_United States.1252;LC_CTYPE=English_United
States.1252;LC_MONETARY=English_United
States.1252;LC_NUMERIC=C;LC_TIME=English_United States.1252"
  > strptime(x, "%d%b%Y")
  [1] "1960-01-01" "1960-01-02" "1960-03-31"
"1960-07-30"

Bill Dunlap
Spotfire, TIBCO Software
wdunlap tibco.com

>
> Any idea?
>
> 	[[alternative HTML version deleted]]
>
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