Thanks a lot for your answer Jannis. Actually, I should have specified what I`m trying to do. I have a datafame which 3 colums, one is the "person ID", second is "Anfag" and third is "Ende". The two time colums are in this way: "8:50:10", so I have to calculate the medan of the Anfag colum and to determine the length of the route. When I use strptime() I just get NA NA NA I`m new at using R, must finisth this work thoug
I guess Im doing totally wrong, actually everytime i try to use "POSIXct" it doesn`t work Thanks a lot Jannis wrote: > > Hi, > > > try to convert this to the R time format "POSIXct" or "POSIXlt" via > strptime(). Then you can simply substract them. I am not sure whether a > median can be calculated though (should be possible as POSIXct stores > the value as seconds since 1970....) > > Best > Jannis > > uvilla schrieb: >> Hi everybody >> >> How do I do to calculate the median and average of a colum of time data >> like >> this: "8:50:10". I also need to plot the time difference between two >> colums >> Thanks a lot > > ______________________________________________ > 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. > > -- View this message in context: http://n4.nabble.com/median-for-time-data-tp932287p932402.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.