Hi Simon, I tried your code, but I am getting some error message: toDaySecond('04MAY2011:08:19:00') #Error in as.POSIXct(d, format = format.string, tz = tz) : #object 'd' not found
A.K. ----- Original Message ----- From: Simon Knapp <sleepingw...@gmail.com> To: Jeff Newmiller <jdnew...@dcn.davis.ca.us> Cc: r-help@r-project.org; york8866 <yu_y...@hotmail.com> Sent: Tuesday, October 16, 2012 1:32 AM Subject: Re: [R] time extraction and normalization toDaySecond <- function(date.string, format.string='%d%b%Y:%T', tz='') { d <- as.POSIXct(d, format=format.string, tz=tz) sum(mapply(function(f, l) as.numeric(format(d, format=f)) * l, c('%H', '%M', '%S'), c(3600, 60, 1))) } toDaySecond('04MAY2011:08:19:00') Will calculate the second of the day. divide by 3600 to convert to hours. On Tue, Oct 16, 2012 at 4:21 PM, Jeff Newmiller <jdnew...@dcn.davis.ca.us> wrote: > There are multiple ways. For lack of your example, I would suggest > multiplying by 24. > > Please post the previous context of the thread if you must post from Nabble. > --------------------------------------------------------------------------- > Jeff Newmiller The ..... ..... Go Live... > DCN:<jdnew...@dcn.davis.ca.us> Basics: ##.#. ##.#. Live Go... > Live: OO#.. Dead: OO#.. Playing > Research Engineer (Solar/Batteries O.O#. #.O#. with > /Software/Embedded Controllers) .OO#. .OO#. rocks...1k > --------------------------------------------------------------------------- > Sent from my phone. Please excuse my brevity. > > york8866 <yu_y...@hotmail.com> wrote: > >>Thanks, >> >>The code gives the numbers in "days", how can I adjust the code to >>directly >>get the numbers in "hours"? >> >>I tried units but it did not work. >> >>Thanks1 >> >> >> >>-- >>View this message in context: >>http://r.789695.n4.nabble.com/time-extraction-and-normalization-tp4646275p4646298.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. ______________________________________________ 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.