[R] Zeitreihen problem

Thomas W Blackwell tblackw at umich.edu
Mon May 12 17:59:43 CEST 2003


as.character()  converts from a factor back to character strings.
In this context,

result <- strptime(as.character(disc[ ,1]), format="%m/%d/%y")

or something like that.  Thanks for asking a second time:  when I
saw the earlier response, I wondered whether this conversion would
be a problem.

-  tom blackwell  -  u michigan medical school  -  ann arbor  -

On Mon, 12 May 2003, Wojtek Musial wrote:

> Thanks for the answer(s), but my specific problem is to change the objects
> like
>
> > disc[1,1]
>  [1] 01/03/1955
>  17647 Levels: 01/01/1956 01/01/1957 01/01/1958 01/01/1959 ... 12/31/2002
>
> which are factors to a string like "01/03/1955". I can't find any way to
> convert it to such a string, which can then be converted using for example
>
> > strptime(datevec, format="%m/%d/%Y")
>
> Wojtek Musial




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