[Rd] as.Date nuance
vdergachev at rcgardis.com
Sat Mar 24 16:51:13 CET 2007
On Saturday 24 March 2007 6:21 am, Prof Brian Ripley wrote:
> This is how strptime() works: it processes the input to match the format.
Except that the format does not match the string - there are leftover
characters. Even by R's own definition:
> match("a", "ab")
as, of course, is reasonable.
Is there some way to make sure there is an exact match ?
thank you !
> On Fri, 23 Mar 2007, Vladimir Dergachev wrote:
> > I have encountered a nuance in as.Date() behaviour that is not
> > altogether
> > obvious - not sure whether this is intended or not:
> >> as.Date("2001-01-01error")
> >  "2001-01-01"
> > I.e. it ignores the rest of the characters. This happens both in 2.3.1
> > and 2.4.1 versions.
> It has always occurred.
> > This also happens with explicit format specification:
> >> as.Date("2006-01-01error", format="%Y-%m-%d")
> >  "2006-01-01"
> > thank you
> > Vladimir Dergachev
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