[R] as.date - german date format

Uwe Ligges ligges at statistik.tu-dortmund.de
Wed Jan 9 15:38:02 CET 2008

Konga wrote:
> Hi,
> I have a data.frame with the following variable:
> $  xx  :Factor w/ 66 levels "01.02.2006","01.03.2006",..: 3 3 3 3 3 3 3 3 3
> now I´d like use "as.date" on it - if I comprehend the instructions on
> http://finzi.psych.upenn.edu/R/library/base/html/format.Date.html
> it should work like this:
> as.date(xx, "%d.%m.%Y") - but it doesn´t...

At least as.Date() works for me for *one* of your factor labels:

as.Date(factor("01.02.2006"), "%d.%m.%Y")
[1] "2006-02-01"

So, please read the posting guide before posting and learn that you 
should tell us:

What is the error message? Which R version is this? What are all the 
labels (in order to reproduce your error)?

in order to get better help.

Uwe Ligges

> the survival Package ist loaded - is there a problem with the german format?
> Or did I understand something wrong?
> Much better than tranforming the format from to data would be to import it
> in the right format.
> Is there a parameter for read.csv to get it as a date from the beginning?

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