[R] Rep command
tlumley at u.washington.edu
Sat Apr 26 00:19:32 CEST 2003
On Fri, 25 Apr 2003, Roger Peng wrote:
> That's not a bug, but the internal representation of the date as the
> number of seconds since the beginning of 1970. See ?DateTimeClasses. I
> guess rep coerces the argument to be numeric.
It's at least an infelicity (in Bill Venables' wonderful phrase) as there
is no way to recover the date without using the internal representation.
There isn't a simple fix, since rep() is not generic and it isn't
possible just to copy attributes over from the argument.
One general solution is to use rep() on a sequence of indexes into your
eg with a<-.leap.seconds
and a special solution for converting numbers back into dates is to add
ISOdate(1970,1,1,hour=0). It might be useful to have this as a variable,
.Epoch <- ISOdate(1970,1,1,hour=0)
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