[R] time conversion from second to Y M D H M S format
I have some time data and which is in seconds time -c( 126230400 126252000 126273600 126295200 126316800 126338400) now I wanted to convert this time to Y M D H M S format I have tried following codes but it does not give me the out put in Y M D H M S time_t1 - as.POSIXlt(time, origin=2005-01-01, tz=GMT) time_f - as.POSIXct(time, origin=2005-01-01, tz=GMT) So somebody could please tell me how to fix this problem. Thanks -- View this message in context: http://r.789695.n4.nabble.com/time-conversion-from-second-to-Y-M-D-H-M-S-format-tp4350831p4350831.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] time conversion from second to Y M D H M S format
Dear Uwe , Thanks for reply I have tried format function that u suggested (format(time_t1, %Y %m %d %H %M %S) and I got format(time_t1, %Y %m %d %H %M %S) [1] 126230400 126252000 126273600 126295200 126316800 126338400 I think something is not working correct. -- View this message in context: http://r.789695.n4.nabble.com/time-conversion-from-second-to-Y-M-D-H-M-S-format-tp4350831p4352062.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] time conversion from second to Y M D H M S format
It works for me as well so there's something funny on your end: please run the following *verbatim* (in a vanilla R session): sink(ForRHelp.txt) print(sessionInfo()) cat(\n) print(.Platform) time -as.POSIXct(c( 126230400, 126252000, 126273600), origin=2005-01-01, tz=GMT) print(time) cat(format(time[1], %Y %m %d %H %M %S), \n) cat(format(time[2], %Y %m %d %H %M %S), \n) cat(format(time[3], %Y %m %d %H %M %S), \n) sink() print(paste(Text file in, getwd())) and send the resulting txt file to the list (so we can see exactly your system config and what not). Michael On Thu, Feb 2, 2012 at 11:57 AM, uday uday_143...@hotmail.com wrote: Dear Uwe , Thanks for reply I have tried format function that u suggested (format(time_t1, %Y %m %d %H %M %S) and I got format(time_t1, %Y %m %d %H %M %S) [1] 126230400 126252000 126273600 126295200 126316800 126338400 I think something is not working correct. -- View this message in context: http://r.789695.n4.nabble.com/time-conversion-from-second-to-Y-M-D-H-M-S-format-tp4350831p4352062.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] time conversion from second to Y M D H M S format
On 02-02-2012, at 19:23, R. Michael Weylandt wrote: It works for me as well so there's something funny on your end: please run the following *verbatim* (in a vanilla R session): sink(ForRHelp.txt) print(sessionInfo()) cat(\n) print(.Platform) time -as.POSIXct(c( 126230400, 126252000, 126273600), origin=2005-01-01, tz=GMT) print(time) cat(format(time[1], %Y %m %d %H %M %S), \n) cat(format(time[2], %Y %m %d %H %M %S), \n) cat(format(time[3], %Y %m %d %H %M %S), \n) sink() print(paste(Text file in, getwd())) and send the resulting txt file to the list (so we can see exactly your system config and what not). Michael I appear to have the same or similar problem on Mac OS X 10.6.8 I ran the above script with R --vanilla. The result is R version 2.14.1 Patched (2012-01-30 r58238) Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit) locale: [1] en_GB/en_GB/en_GB/C/en_GB/en_GB attached base packages: [1] stats graphics grDevices utils datasets methods base $OS.type [1] unix $file.sep [1] / $dynlib.ext [1] .so $GUI [1] X11 $endian [1] little $pkgType [1] mac.binary.leopard $path.sep [1] : $r_arch [1] x86_64 [1] 2009-01-01 00:00:00 GMT 2009-01-01 06:00:00 GMT [3] 2009-01-01 12:00:00 GMT 2009 01 01 00 00 00 2009 01 01 06 00 00 2009 01 01 12 00 00 Berend __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] time conversion from second to Y M D H M S format
On 02-02-2012, at 21:10, Berend Hasselman wrote: On 02-02-2012, at 19:23, R. Michael Weylandt wrote: It works for me as well so there's something funny on your end: please run the following *verbatim* (in a vanilla R session): sink(ForRHelp.txt) print(sessionInfo()) cat(\n) print(.Platform) time -as.POSIXct(c( 126230400, 126252000, 126273600), origin=2005-01-01, tz=GMT) print(time) cat(format(time[1], %Y %m %d %H %M %S), \n) cat(format(time[2], %Y %m %d %H %M %S), \n) cat(format(time[3], %Y %m %d %H %M %S), \n) sink() print(paste(Text file in, getwd())) and send the resulting txt file to the list (so we can see exactly your system config and what not). Michael I appear to have the same or similar problem on Mac OS X 10.6.8 I ran the above script with R --vanilla. The result is R version 2.14.1 Patched (2012-01-30 r58238) Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit) locale: [1] en_GB/en_GB/en_GB/C/en_GB/en_GB attached base packages: [1] stats graphics grDevices utils datasets methods base $OS.type [1] unix $file.sep [1] / $dynlib.ext [1] .so $GUI [1] X11 $endian [1] little $pkgType [1] mac.binary.leopard $path.sep [1] : $r_arch [1] x86_64 [1] 2009-01-01 00:00:00 GMT 2009-01-01 06:00:00 GMT [3] 2009-01-01 12:00:00 GMT 2009 01 01 00 00 00 2009 01 01 06 00 00 2009 01 01 12 00 00 Disregard my previous posting. Results are correct. Berend __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] time conversion from second to Y M D H M S format
-Original Message- From: r-help-boun...@r-project.org [mailto:r-help-bounces@r- project.org] On Behalf Of uday Sent: Thursday, February 02, 2012 8:57 AM To: r-help@r-project.org Subject: Re: [R] time conversion from second to Y M D H M S format Dear Uwe , Thanks for reply I have tried format function that u suggested (format(time_t1, %Y %m %d %H %M %S) and I got format(time_t1, %Y %m %d %H %M %S) [1] 126230400 126252000 126273600 126295200 126316800 126338400 I think something is not working correct. You are right something is not working correctly. But you haven't shown what you did from beginning to end, so we don't know what that something might be. Try this time -c( 126230400, 126252000, 126273600, 126295200, 126316800, 126338400) time_t1- as.POSIXlt(time, origin=2005-01-01, tz=GMT) time_t1 [1] 2009-01-01 00:00:00 GMT 2009-01-01 06:00:00 GMT [3] 2009-01-01 12:00:00 GMT 2009-01-01 18:00:00 GMT [5] 2009-01-02 00:00:00 GMT 2009-01-02 06:00:00 GMT format(time_t1, %Y %m %d %H %M %S) [1] 2009 01 01 00 00 00 2009 01 01 06 00 00 2009 01 01 12 00 00 [4] 2009 01 01 18 00 00 2009 01 02 00 00 00 2009 01 02 06 00 00 Does that not do what you wanted? Dan Daniel J. Nordlund Washington State Department of Social and Health Services Planning, Performance, and Accountability Research and Data Analysis Division Olympia, WA 98504-5204 __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] Time conversion
I'm trying to convert a variable that is imported from CSV into a datetime,I'm trying to use the strptime function but with no joy, can anyone offer any advise? i have a vector timestamp 07-07-2008-21:03:55 07-07-2008-19:52:55 07-07-2008-19:54:14 07-07-2008-15:24:01 07-07-2008-13:39:17 07-07-2008-13:39:55 timestamp-strptime(timestamp,%d-%m-%y-%H:%M:%S) ## then filter on the datetime time-ifelse(timestamp 07-08-2008-00:00:00, TRUE, FALSE) -- Michael Pearmain Senior Statistical Analyst Google UK Ltd Belgrave House 76 Buckingham Palace Road London SW1W 9TQ United Kingdom t +44 (0) 2032191684 [EMAIL PROTECTED] If you received this communication by mistake, please don't forward it to anyone else (it may contain confidential or privileged information), please erase all copies of it, including all attachments, and please let the sender know it went to the wrong person. Thanks. [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Time conversion
I'm trying to convert a variable that is imported from CSV into a
datetime,I'm
trying to use the strptime function but with no joy, can anyone offer
any
advise?
i have a vector
timestamp
07-07-2008-21:03:55
07-07-2008-19:52:55
07-07-2008-19:54:14
07-07-2008-15:24:01
07-07-2008-13:39:17
07-07-2008-13:39:55
timestamp-strptime(timestamp,%d-%m-%y-%H:%M:%S)
## then filter on the datetime
time-ifelse(timestamp 07-08-2008-00:00:00, TRUE, FALSE)
1. Since the years are of the form , your format vector should be
%d-%m-%Y-%H:%M:%S.
2. You don't need the ifelse call if you the last two arguments are just
TRUE, FALSE
3. You do need to call strptime on your comparision date.
timestamp - c(07-07-2008-21:03:55,
07-07-2008-19:52:55,
07-07-2008-19:54:14,
07-07-2008-15:24:01,
07-07-2008-13:39:17,
07-07-2008-13:39:55)
timestamp - strptime(timestamp,%d-%m-%Y-%H:%M:%S)
time - timestamp strptime(07-08-2008-00:00:00,%d-%m-%Y-%H:%M:%S)
Regards,
Richie.
Mathematical Sciences Unit
HSL
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