Matthew Dowle wrote:
Thanks. When is.weekend() is given an object it doesn't know about, could a warning or error be added? At the moment, I think you're agreeing, that it silently returns a random TRUE/FALSE.
It's not random, it depends on the value of Sys.time(), which also includes seconds .....
I agree that a warning or error might be sensible. So I think you are about to write a note to the maintainer of package "chron" including patches for is.weekend() and friends?
Uwe Ligges
-----Original Message-----
From: Uwe Ligges [mailto:[EMAIL PROTECTED] Sent: 26 May 2004 11:55
To: Matthew Dowle
Cc: '[EMAIL PROTECTED]'
Subject: Re: [R] is.weekend() odd behaviour
Matthew Dowle wrote:
It seems is.weekend() is unsure ?
It is completely sure, if an object is given is.weekend() knows about as in:
table(is.weekend(sapply(1:100, function(i){Sys.sleep(0.05);as.chron(Sys.time())})))
(note the as.chron() call!)
Uwe Ligges
# Start R 1.9.0 with --vanilla on windows xp # load package chron
table(is.weekend(sapply(1:100, function(i){Sys.sleep(0.05);Sys.time()})))
FALSE TRUE 68 32
date()
[1] "Wed May 26 11:18:56 2004"
version _
platform i386-pc-mingw32
arch i386 os mingw32 system i386, mingw32 status major 1 minor 9.0 year 2004 month 04 day 12 language R
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