Re: [R] Time data

2011-04-14 Thread jim holtman
It depends on how you want to work with the data. Here is an example of converting both to POSIXct and a numeric value: > x <- c('1:24', '13:46') > # convert to POSIXct > x.POSIXct <- as.POSIXct(x, format = '%H:%M') > x.POSIXct [1] "2011-04-14 01:24:00 EDT" "2011-04-14 13:46:00 EDT" > > # to get

[R] Time data

2011-04-13 Thread Gregory Pierce
Hello fellow R-users, I have a data set that includes times in the hh:mm format. I am uncertain how to tell R that it is time data. Currently when I try to calculate a mean with this time subset, I get an error message: > mean(mar2011stats$TT) [1] NA Warning message: In mean.default(mar2011stats$