Re: [R] median for time data

I fear nobody can really help you as we can not really understandd what your problem is. What does the error message read? What values does start.posix have? And what skiers? You should include the code for a reproducable example. include at least 2 values for skiers[,3] in their correct forma

Re: [R] median for time data

Hi again. I´m sorry to ask again but I cannot do the boxplot coprrectly. I'm typing: start.posix=as.POSIXct(skiers[,3]) boxplot(start.posix) where skiers[,3] is my time data, and I get this error I have no idea of what that means.. All the other steps are ready, like the median of the time da

Re: [R] median for time data

Thanks you both Jannis now it is working!!. I just have one mor request, please! How I'm suppose to make a boxplot with anfang, when working with times, it just have on the y axis some decimal number which make no sense. i need the time to appear in the y axis in order to see the median in the bo

Re: [R] median for time data

uvilla schrieb: 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 If you have a look at help(strptime) you find that you have to specify the format in which yo

Re: [R] median for time data

# input library(chron) tt <- times(c("8:50:10", "9:40:20", "10:55:45")) tt2 <- times(c("01:00:00", "02:00:00", "03:00:00")) tt tt2 # calc median and differences (although it will give results as fractions of a day if there are negative results) median(tt) tt - tt2 tt2 - tt On Tue, Dec 1, 2009 a

Re: [R] median for time data

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

Re: [R] median for time data

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 everybo

[R] median for time data

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 -- View this message in context: http://n4.nabble.com/median-for-time-data-tp932287p932287.html Sent from the R help