[R] out.format for chron

Gabor Grothendieck ggrothendieck at gmail.com
Thu Oct 19 16:35:28 CEST 2006


As discussed the Help Desk article in R News 4/1, the 2 vs 4 year
length is controlled by the chron.year.abb option,  e.g.

   options(chron.year.abb = FALSE)
   chron(20)

however, as also discussed there its not really recommended that
you use this option so try this instead:

   ddmmyyyy <- function( x )
     with( month.day.year( x ), sprintf( "%02.f-%02.f-%04.f", day,
month, year) )
   chron( 20, out.format = ddmmyyyy )




On 10/19/06, Denis Chabot <chabotd at globetrotter.net> wrote:
> Dear R users,
>
> Do you know of a way to precise an out.format for a chron object that
> would use numbers for months and yet 4 digits for the year?
>
> I have tried out.format=c("d-m-year") (note the m instead of either
> mon or month) but got 27-Feb-1992.
>
> Also, the help for chron tells us how to define an out.format when we
> create a chron object, but how can you change the out.format of an
> existing chron object?
>
> Thanks in advance,
>
> Denis
>
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