[R] as.date - german date format

[Konga]

Hi Terry,

thanks for the information, I should know this in advance but I´m not used
to case sensitive syntax - thanks Delphi... 

regards,
Eric Will


Terry Therneau wrote:
> 
>>> 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...
>>> What is the error message? 
>>> - Fehler in as.date(mydata$xx, "%d.%m.%Y") : 
>>>   Cannot coerce to date format
>  
>   You are invoking a function from the "date" library, but reading
> the documentation for "Date"; they are quite different.
> 
>   The 'date' library was written 8-10 years ago, and is used by some of
> the
> functions in the survival library (a dependence that I am currently
> removing).
> It works quite well, but has a much smaller scope of functionality than
> the 
> later 'Date' library, in particular there are no attempts at
> multi-language
> support.  So as.date + German format is nearly a contradiction.  
> 
>   > args(as.date)
>   function (x, order = "mdy", ...) 
>   
> So you see that the function does not even have a "format" argument.  If
> your
> delimiter were one of /,-  then order='dmy' would have worked, but as.date
> does 
> not accept '.'
> 
> 	Terry Therneau
> 
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> 

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