[R] Timezones

[ripley@stats.ox.ac.uk]

It's a Linux issue.  Solaris gives:

> Sys.time()
[1] "2003-03-06 08:27:23 GMT"
> as.POSIXlt(Sys.time(), "HST")
[1] "2003-03-05 22:27:40 HST"

which looks right to me.  Past experience suggests that Solaris's POSIX
conformance is much better than glibc's.  Since my RH7.2 box does it too,
I will look for a workaround.  (The problem seems to be in the use of
tzset, and the code of zdump may indicate how to get around this.)

Brian

On Thu, 6 Mar 2003, Adrian Trapletti wrote:

> Can anybody give me a hint why as.POSIXlt doesn't recognize the same
> timezones that zdump knows about (Linux Suse 8.1 and Suse 7.3)? Is there
> a workaround?
> 
> R : Copyright 2002, The R Development Core Team
> Version 1.6.1  (2002-11-01)
> 
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> [Previously saved workspace restored]
> 
> > Sys.time()
> [1] "2003-03-06 08:20:09 CET"
> > system("zdump CET")
> CET  Thu Mar  6 08:20:14 2003 CET
> > as.POSIXlt(Sys.time(), "HST")
> [1] "2003-03-06 08:20:18 CET"
> > system("zdump HST")
> HST  Wed Mar  5 21:20:20 2003 HST
> 
> best
> Adrian
> 
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-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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