Message-ID: <loom.20041104T174642-615@post.gmane.org>
Date: 2004-11-04T17:27:14Z
From: Gabor Grothendieck
Subject: problems with seq.dates
<Ciprian_Marin <at> ssga.com> writes:
:
: There seem to be a bug in the seq.dates function in the chron package for R
: 2.0. Please see below:
:
: when the specified frequency is "months", seq.dates does not return the end
: of the specified interval all the time:
:
: > seq.dates(from = "05/31/04", to = "12/31/04", by = "months")
: [1] 05/31/04 06/30/04 07/31/04 08/31/04 09/30/04 10/31/04 11/30/04
:
This is a bug. A workaround is to place the to= date after the
last date you want in your sequence rather than right at it:
seq.dates(from = "05/31/04", to = chron("12/31/04")+1, by = "months")
You can fix your copy of seq.dates by inserting, after these 3 lines:
if (by == "months") {
nxt.day <- month.day.year(as.numeric(from + 1))$month
end.of.the.month <- frm.mdy$month != nxt.day
the following line:
if (end.of.the.month) x <- c(x, x[length(x)]+1)