Displaying 20 results from an estimated 10261 matches for "gmt".
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2010 Feb 23
0
subtracting 100 from strptime year vector generates missing values in POSIXct where none appear to exist in strptime year vector
...04-09"
[811] "2028-04-09" "2028-04-09"
> dt1=strptime(as.character(dat$BIRTHDT),'%d-%b-%y'); dt1$year=dt1$year-100; as.POSIXct(dt1)
[1] "1922-07-14 BST" "1922-07-14 BST" "1922-07-14 BST" "1922-07-14 BST" "1921-03-23 GMT" "1921-03-23 GMT" "1921-03-23 GMT"
[8] "1927-08-27 BST" "1927-08-27 BST" "1927-08-27 BST" "1927-08-27 BST" "1940-04-05 BST" "1940-04-05 BST" "1940-04-05 BST"
[15] "1940-04-05 BST" "1923-...
2009 Aug 18
1
aggregating values at discreet irregular time intervals into hourly values
...ng software at large) and I would need some help to sum up event data at discreet time and irregular time interval into a hourly frequency.
Here is an example of my time series frame (irregular time-serie object - irts in the tseries package):
time value
2008-12-19 19:11:03 GMT 1
2008-12-19 19:12:00 GMT 0
2008-12-19 19:42:39 GMT 1
2008-12-19 20:42:41 GMT 1
2008-12-19 20:42:45 GMT 1
2008-12-19 20:42:48 GMT 1
2008-12-19 20:42:55 GMT 1
2008-12-19 20:42:57 GMT 1
2008-12-19 20:43:07 GMT 1
2008-12-19 20:43:16 GMT 1
2008-12-19 21:05:45 GMT...
2005 Oct 25
2
strptime problem for 2004-10-03 02:00:00
Hello, I at first thought this was a system or locale issue, but since
it occurs on
both Windows and Linux and only for 2004 (AFAIK) I report it.
I have a problem with as.POSIXct for the hour between
"2004-10-03 02:00:00 GMT" and "2004-10-03 02:59:59 GMT".
In short, the 2 AM (GMT) hour in 2004 (but not in other years) is
interpreted as 1 AM by strptime:
(I use ISOdatetime as a convenience).
## Windows XP
ISOdatetime(2004, 10, 3, 2, 0, 0, tz = "GMT")
##[1] "2004-10-03 01:00:00 GMT&qu...
2003 Aug 04
0
Windows 2000 Bug in GMT +/- n Timezones (PR#3644)
Tracking down this bug was joint work with Jermoe Asselin (jerome at
hivnet.ubc.ca) and Patrick Connolly (p.connolly at hortresearch.co.nz). We
collectively were able to determine that this is a problem in Windows 2000
but not in Linux.
Timezones of the form GMT-5, GMT+3, etc. do not work properly in Windows 2000
for nearby dates in daylight savings time although they do work for nearby
dates not in daylight savings time and in far away dates. (Apparently
nearby dates are processed by the OS and far away ones by R.) This appears
to be a Windows specific...
2004 Aug 18
1
Fwd: strptime() problem? - Resolved
...uot;
Proc 1. The 5th el. of the obtained POSIXct serie goes out of itself
---------------------------------------------------------------------------------
> rain.strptime <- strptime(rain$ts, format="%d/%m/%Y %H:%M:%S")
> rain.strptime.ct <- as.POSIXct(rain.strptime,tz="GMT")
> rain.strptime.ct[2039:2046]
[1] "2000-03-25 23:00:00 CET" "2000-03-26 00:00:00 CET"
[3] "2000-03-26 01:00:00 CET" "2000-03-26 03:00:00 CEST"
[5] "2000-03-26 05:00:00 CEST" "2000-03-26 05:00:00 CEST"
[7] "2000-03-26 06:00...
2005 Apr 19
1
timeSeries Date Warning messages: Set timezone to GMT!
Hello, I must be doing something wrong that's very obvious. But I just
don't see it.
I changed my Windows Time Zone to GMT and my Financial Center to Montreal.
But I still get several warnings.
>Sys.timezone()
[1] "GMT Daylight Time"
>myFinCenter
[1] "Montreal"
>Sys.timeDate()
[1] "Montreal"
[1] [2005-04-19 10:55:02]
Warning messages:
1: Set timezone to GMT! in: Sys.timeDate()...
2009 Jul 08
1
R 2.9.0 plot still forcing current time zone
...rrent timezone. (Earlier vrsions
always used the current timezone.)"
however I am using 2.9.0 on linux and the following still happily
produces an x-axis in local (MDT) time
> x=strptime(paste('09-01-01 00:00:00',sep=''),format='%y-%m-%d
%H:%M:%S',tz="GMT")+60*60*24*(seq(0.5,1.5,.1))
> x
[1] "2009-01-01 12:00:00 GMT" "2009-01-01 14:24:00 GMT"
[3] "2009-01-01 16:48:00 GMT" "2009-01-01 19:12:00 GMT"
[5] "2009-01-01 21:36:00 GMT" "2009-01-02 00:00:00 GMT"
[7] "2009-01-02 02:2...
2009 Jun 16
1
Chron / zoo index problem
Hi all
I have an irregular zoo series, where the time index looks like the
following:
> head(time(l.zoo))
[1] "2009-06-15 01:44:20.802 GMT" "2009-06-15 01:44:20.812 GMT" "2009-06-15
01:44:20.837 GMT" "2009-06-15 01:44:20.848 GMT" "2009-06-15 06:00:01.320
GMT"
[6] "2009-06-15 06:00:01.330 GMT"
> as.numeric(head(time(l.zoo)))
[1] 1245030261 1245030261 1245030261 1245030261...
2003 Jul 31
4
timezones
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
Time difference of -5 hours
Note that the difference between the times displayed by the first two
R expressions is -4 hours. Why does the last expression return
-5 h...
2004 Aug 17
3
Fwd: strptime() problem?
...what
#creates an object POSIXlt and doesn't allow to specify that the time zone of
#the data is already UTC; followed by as.POSIXct()
> lluvia.strptime <- strptime(raincida$ts, format="%d/%m/%Y %H:%M:%S")
> lluvia.strptime.POSIXct <- as.POSIXct(lluvia.strptime,tz="GMT")
A "printed" extract is:
[2039] "2000-03-25 22:00:00 GMT" "2000-03-25 23:00:00 GMT"
[2041] "2000-03-26 00:00:00 GMT" "2000-03-26 01:00:00 GMT"
[2043] "2000-03-26 03:00:00 GMT" "2000-03-26 03:00:00 GMT"
[2045] "20...
2012 May 27
3
Problem with strptime
...%H:%M:%S %Y") #example line from
data1 ''Tue Aug 16 03:00:01 2011''
> summary(datetime1)
Min. 1st Qu.
Median Mean
"2011-08-15 21:00:01 BST" "2011-10-08 01:00:01 BST" "2011-11-30 05:00:01
GMT" "2011-11-30 04:38:47 GMT"
3rd Qu. Max.
"2012-01-22 09:00:01 GMT" "2012-03-15 13:00:01 GMT"
> min(datetime1)
[1] "2011-08-15 21:00:01 BST"
> data2=read.table("data2.txt",header=T,sep="\t...
2009 Apr 15
2
shift/lag when merge zoo
Hello alltogheter,
I have a little problem regarding merging to zoo series.
I want to merge two zoo series to reduce the timegaps between the stamps.
I use the following code:
data.test <-
as.POSIXct(seq(data.input01[1,1],data.input01[nrow(data.input01),1],900),tz="GMT")
data.troughput01 <- as.zoo(data.input01$V2)
index(data.troughput01) <- as.POSIXct(data.input01$V1,tz="GMT")
data.output01 <-merge(data.troughput01,zoo(,data.test))
They look like that:
head(data.test)
[1] "2008-01-01 00:00:00 GMT" "2008-01-01 00:15:00 GMT&...
2010 May 20
2
Time problems (POSIXct)
Hello,
I have a zoo time series object (say a) with the following time
stamp/format
[1] "1950-01-03 GMT" "1950-01-04 GMT" "1950-01-05 GMT" "1950-01-06 GMT"
[5] "1950-01-09 GMT" "1950-01-10 GMT"
and another (say b) with
[1] "1950-01-05" "1950-01-06" "1950-01-09" "1950-01-10" "1950-01-11"
[6] &q...
2018 Aug 15
1
vfs_shadow_copy2 with snapprefix & delimiter options
...failure, or a bug. Log says its successfully parsing the snapshots:
[2018/08/14 19:07:03.235339, 6, pid=21709, effective(1000, 1000), real(1000, 0)] ../source3/modules/vfs_shadow_copy2.c:2131(shadow_copy2_get_shadow_copy_data)
shadow_copy2_get_shadow_copy_data: daily_2018-08-13T06:25:07 -> @GMT-2018.08.13-04.25.07
[2018/08/14 19:07:03.235394, 10, pid=21709, effective(1000, 1000), real(1000, 0), class=vfs] ../source3/modules/vfs_default.c:1412(vfswrap_fsctl)
FSCTL_GET_SHADOW_COPY_DATA: 13 volumes for path[folder/file.txt].
Label[0]: '@GMT-2018.08.14-04.25.09'
Label[1]: '@...
2005 Dec 05
1
need help with matrix manipulation
...problems with some matrix manipulation. The data I am working with are
sites with hourly ozone readings and is in a matrix where each row is a site
and each column is an hourly reading. So for 10 sites, one day's worth of
data is a 10x24 matrix - column 1 is the ozone measurement for midnight GMT,
column 2 is ozone at 1:00am GMT, etc.
My challenge is that I want to create a new matrix with the same sites, BUT
I want the first column to be the hourly ozone reading at midnight LOCAL
time. If all the sites were in the same time zone this would be easy - for
the US Eastern time zone I coul...
2012 Oct 30
2
POSIXct date missing "time component"
Hi,
I have some dates that are giving me a problem, in general the dates look
like this:
free.dates[60:61]
[1] "2009-05-21 23:45:00 GMT" "2009-05-22 00:00:00 GMT"
but for some reason, when taken "alone", they look like this:
free.dates[60]
[1] "2009-05-21 23:45:00 GMT"
free.dates[61]
[1] "2009-05-22 GMT" # the time component is gone, and doesn't jive with
other code I have written...
2005 Feb 08
0
Samba patch kludge-gmt fixes red files in WinCvs
...ntrol system. After the swap
to and from daylight savings time WinCVS erroneously flags all files in
cvs working directories on Samba shares as modified (because of the icon
color WinCVS users refer to modified files as "red").
We found this rather astonishing: CVS records time stamps in GMT/UTC
just like Linux, so there shouldn't be any time zone related
differences. Closer examiniation revealed that Samba doesn't send the
original time stamps but converts them to so called kludge-GMT which
1. may differ by 1 hour to GMT for some files,
2. changes by 1 hour on every swap...
2010 Oct 08
2
Time OffSet From GMT - Losing it
Losing time offset from GMT:
> sTime = as.POSIXct(paste("2008-03-03","09:30:01"), origin="1970-01-01")
> sTime
[1] "2008-03-03 09:30:01 EST" <---- 9.31am EST
> sTime
[1] 1204554601
> t = as.numeric(sTime)
> as.POSIXct(t, origin="1970-01-01")
[1] "2...
2001 Dec 17
3
Winbind memory leak
...samba is running at full tilt ? Other than the
obvious one of an authentication request failing during the few seconds it
is offline. If not then I can automatically stop and start winbind with
impunity (if there is such a thing in IT...)
Thanks
Noel
Winbind memory is 0.7 Mon Dec 17 14:34:00 GMT 2001 Startup
Winbind memory is 1.1 Mon Dec 17 14:35:00 GMT 2001
Winbind memory is 1.1 Mon Dec 17 14:36:00 GMT 2001
Winbind memory is 1.1 Mon Dec 17 14:37:00 GMT 2001
Winbind memory is 1.1 Mon Dec 17 14:38:00 GMT 2001
Winbind memory is 1.2 Mon Dec 17 14:39:00 GMT 2001
.
.
.
Winbind memory is 5.2 Mo...
2008 Dec 09
3
difftime
Hi. I'm trying to take the difference in days between two times. Can
you point out what's wrong, or suggest a different function? When I
try the following code, The following code works fine:
a <- strptime(1911100807,format="%Y%m%d%H",tz="GMT")
b <- strptime(1911102718,format="%Y%m%d%H",tz="GMT")
x <- difftime(b, a, units="days")
x
But when I change the year, the following code returns 'NA' for the
time between a and b. Thanks.
a <- strptime(1999100807,format="%Y%m%d%H",t...