From a.stephenson@lancaster.ac.uk  Mon Oct 28 15:54:05 2002
From: a.stephenson@lancaster.ac.uk (a.stephenson@lancaster.ac.uk)
Date: Mon, 28 Oct 2002 16:54:05 +0100 (MET)
Subject: as.POSIX (PR#2222)
Message-ID: <200210281554.QAA28705@pubhealth.ku.dk>

Full_Name: Alec Stephenson
Version: 1.6.0
OS: linux
Submission from: (NULL) (148.88.138.5)


Appears to be a sign error in as.POSIX(lt/ct)

> library("chron")

The following is fine, with default origin.

> tmp <- chron(1:2, origin = c(1,1,1970))
> as.POSIXlt(tmp)
[1] "1970-01-02 01:00:00 GMT" "1970-01-03 01:00:00 GMT"

These are not.

> tmp <- chron(1:2, origin = c(1,1,1960))
> tmp
[1] 01/02/60 01/03/60
> as.POSIXlt(tmp)
[1] "1980-01-03 GMT" "1980-01-04 GMT"

> tmp <- chron(1:2, origin = c(1,1,1990))
> tmp
[1] 01/02/90 01/03/90
> as.POSIXlt(tmp)
[1] "1950-01-02 GMT" "1950-01-03 GMT"


> version
         _                
platform i686-pc-linux-gnu
arch     i686             
os       linux-gnu        
system   i686, linux-gnu  
status                    
major    1                
minor    6.0              
year     2002             
month    10               
day      01               
language R

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as.POSIX (PR#2222)
a.stephenson@lancaster.ac.uk