The solution to all these problems is to use UTC. You can't select a
`standard time' such as EST: that does not exist for half the year.
The only `timezone' without DST that we can guarantee to be available is
UTC.
You seem to have misunderstandings about how to set (not convert to) UTC.
On Thu
<[EMAIL PROTECTED]To: [EMAIL PROTECTED],
> [EMAIL PROTECTED]
Sent by: cc:
Thanks to Jerome Asselin (jerome at hivnet.ubc.ca) and
Patrick Connolly (p.connolly at hortresearch.co.nz) for your
work on this problem. We collectively were able to find
two bugs, made easier by using our three different machines
over 3 different time zones. See the following for details:
htt
Hi Gabor,
I believe I have an answer to your first two inquiries.
Both have something to do with the daylight vs. standard times. If I
understand correctly, "GMT" has only standard time.
Consider this example.
> (now <- Sys.time())
[1] "2003-08-01 15:03:38 PDT"
> (now.gmt <- as.POSIXlt(now,tz
I share your concerns regarding Problems 1 and 2. However, I am unable to
provide help on those at this moment.
As for Problem 3, an alternative for the time being would be to use
another package such as chron or date, although it would be preferable to
use the classes of the base package if p
I have some questions and comments on timezones.
Problem 1.
# get current time in current time zone
> (now <- Sys.time())
[1] "2003-07-29 18:23:58 Eastern Daylight Time"
# convert this to GMT
> (now.gmt <- as.POSIXlt(now,tz="GMT"))
[1] "2003-07-29 22:23:58 GMT"
# take difference
> now-now.gmt
[EMAIL PROTECTED] wrote:
> zdump manipulates its environment directly but is otherwise the same code.
> Solaris and glibc define putenv slightly differently. There are
> two lines like
>
> char buff[20];
>
> in src/main/datetime.c, and if you change those to
>
> static char buff[2
zdump manipulates its environment directly but is otherwise the same code.
Solaris and glibc define putenv slightly differently. There are
two lines like
char buff[20];
in src/main/datetime.c, and if you change those to
static char buff[200];
it should work (increasing the len
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 loo
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?
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