Don't know the answer to your question but note
that chron can do it without by=.
xD <- as.Date("1996-01-01")
yD <- as.Date("1996-12-01")
library(chron)
xc <- chron(xD)
yc <- chron(yD)
seq(xc, yc)
# Also one can do this in either chron or Date:
chron(xc:yc)
as.Date(xD:yD)
Date: Fri, 3 Dec 2004 11:29:08 -0800
From: Vadim Ogranovich <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Subject: [Rd] seq.Date requires by
Hi,
What is the reason for seq.Date to require the 'by' argument and not to
default it to 1 in the example below?
> seq(from=as.Date("1996-01-01"), to=as.Date("1996-12-01"))
Error in seq.Date(from = as.Date("1996-01-01"), to =
as.Date("1996-12-01")) :
exactly two of `to', `by' and `length.out' / `along.with' must be
specified
This is R-1.9.1, but I haven't seen anything pertaining in the release
notes of 2.0.x.
Thanks,
Vadim
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