From jago@mclink.it  Sat Sep  7 13:47:07 2002
From: jago@mclink.it (Stefano Iacus)
Date: Sat, 7 Sep 2002 14:47:07 +0200
Subject: Date arithmetic fails (PR#1819)
In-Reply-To: <200207211826.UAA29493@pubhealth.ku.dk>
Message-ID: <EB34BD27-C25F-11D6-8719-003065CC4CB8@mclink.it>

I have partially fixed this bug. Now arithmetic works fine but I still 
have problems with TZ, i.e.

 > a=strptime("2002-06-01 12:15:01","%Y-%m-%d %H:%M:%S")
 > a
[1] "2002-06-01 12:15:01"
 > a+0
[1] "2002-06-01 05:15:01"
 > a+3600
[1] "2002-06-01 06:15:01"
 > b=c(a)
 > b
[1] "2002-06-01 05:15:01"

TZ is set to +0100 dy default on the Carbon R.

stefano

On Domenica, luglio 21, 2002, at 08:26 , RML27@cornell.edu wrote:

> Full_Name: Ronnen Levinson
> Version: 1.5.1
> OS: Mac OS 10.1
> Submission from: (NULL) (12.232.201.92)
>
>
> The value returned by strptime behaves badly after arithmetic operation 
> and/or
> combination.
>
>> a=strptime("2002-06-01 12:15:01","%Y-%m-%d %H:%M:%S")
>> a
> [1] "2002-06-01 12:15:01"
>> a+0
> [1] "1932-04-25 21:46:45"
>> a+3600
> [1] "1932-04-25 22:46:45"
> b=c(a)
>> b
> [1] "1932-04-25 21:46:45"
>
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Date arithmetic fails (PR#1819)
Stefano Iacus