From pdalgd at gmail.com  Thu May 18 13:19:35 2017
From: pdalgd at gmail.com (peter dalgaard)
Date: Thu, 18 May 2017 13:19:35 +0200
Subject: [Rd] [R] R-3.4.0 fails test
In-Reply-To: <20170518090016.GB4553@slingshot.co.nz>
References: <20170517074216.GA4553@slingshot.co.nz>
 <4a086fbb-61ed-d3a5-ce23-14bbaea5531f@gmail.com>
 <ACA47D66-F469-4C75-8521-CB0DD76572C7@gmail.com>
 <20170518090016.GB4553@slingshot.co.nz>
Message-ID: <29540304-FC8B-4B49-B94B-E191DEFA3BCB@gmail.com>


> On 18 May 2017, at 11:00 , Patrick Connolly <p_connolly at slingshot.co.nz> wrote:
> 
> On Wed, 17-May-2017 at 01:21PM +0200, Peter Dalgaard wrote:
> 
> |> 
> |> Anyways, you might want to 
> |> 
> |> a) move the discussion to R-devel
> |> b) include your platform (hardware, OS) and time zone info
> 
> System:    Host: MTA-V1-427894 Kernel: 3.19.0-32-generic x86_64 (64 bit gcc: 4.8.2)
>           Desktop: KDE Plasma 4.14.2 (Qt 4.8.6) Distro: Linux Mint 17.3 Rosa

I suppose that'll do...


> Time zone: NZST



> 
> |> c) run the offending code lines "by hand" and show us the values of format(dlt) and format(dct) so we can see what the problem is, something like
> |> 
> |> dlt <- structure(
> |>     list(sec = 52, min = 59L, hour = 18L, mday = 6L, mon = 11L, year = 116L,
> |>        wday = 2L, yday = 340L, isdst = 0L, zone = "CET", gmtoff = 3600L),
> |>        class = c("POSIXlt", "POSIXt"), tzone = c("", "CET", "CEST"))
> |> dlt$sec <- 10000 + 1:10 
> |> dct <- as.POSIXct(dlt)
> |> cbind(format(dlt), format(dct))
> 
>> cbind(format(dlt), format(dct))
>      [,1]                  [,2]                 
> [1,] "2016-12-06 21:45:41" "2016-12-06 22:45:41"
> [2,] "2016-12-06 21:45:42" "2016-12-06 22:45:42"
> [3,] "2016-12-06 21:45:43" "2016-12-06 22:45:43"
> [4,] "2016-12-06 21:45:44" "2016-12-06 22:45:44"
> [5,] "2016-12-06 21:45:45" "2016-12-06 22:45:45"
> [6,] "2016-12-06 21:45:46" "2016-12-06 22:45:46"
> [7,] "2016-12-06 21:45:47" "2016-12-06 22:45:47"
> [8,] "2016-12-06 21:45:48" "2016-12-06 22:45:48"
> [9,] "2016-12-06 21:45:49" "2016-12-06 22:45:49"
> [10,] "2016-12-06 21:45:50" "2016-12-06 22:45:50"
>> 
> 


So exactly 1 hour out of whack. Is there a Daylight Saving Times issue, perchance?

-pd


> 
> -- 
> ~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.   
>   ___    Patrick Connolly   
> {~._.~}                   Great minds discuss ideas    
> _( Y )_  	         Average minds discuss events 
> (:_~*~_:)                  Small minds discuss people  
> (_)-(_)  	                      ..... Eleanor Roosevelt
> 	  
> ~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.

-- 
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Office: A 4.23
Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com



[Rd] [R] R-3.4.0 fails test
peter dalgaard