Re: [R] time extraction and normalization

2012-10-16 Thread Simon Knapp
' 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

Re: [R] time extraction and normalization

2012-10-16 Thread arun
...@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

Re: [R] time extraction and normalization

2012-10-16 Thread John Kane
For some reason this seems to work: d - 04MAY2011:08:19:00 toDaySecond(d) John Kane Kingston ON Canada -Original Message- From: smartpink...@yahoo.com Sent: Tue, 16 Oct 2012 05:22:29 -0700 (PDT) To: sleepingw...@gmail.com Subject: Re: [R] time extraction and normalization Hi

[R] time extraction and normalization

2012-10-15 Thread york8866
Dear all, I have a series of time variables such as: 04MAY2011:08:19:00 01JUN2011:09:44:00 28JUN2011:08:08:00 25JUL2011:07:44:00 How could I extract the time as a number, so that I can normalize the times by the first time variable? Thanks, -- View this message in context:

Re: [R] time extraction and normalization

2012-10-15 Thread R. Michael Weylandt
Use something like format(as.POSIXct(xxx, format = STRING), format = STRING2) where the appropriate formatting codes can be worked out using the info in ?strptime Cheers, Michael On Mon, Oct 15, 2012 at 9:32 PM, york8866 yu_y...@hotmail.com wrote: Dear all, I have a series of time variables

Re: [R] time extraction and normalization

2012-10-15 Thread york8866
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

Re: [R] time extraction and normalization

2012-10-15 Thread Jeff Newmiller
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 NewmillerThe .

Re: [R] time extraction and normalization

2012-10-15 Thread Simon Knapp
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