Hello all, I have a quick question about formatting date strings..
I am currently debugging some Matlab code someone else wrote and since it is so bad that I have to go through it line by line I figured that I would just rewrite the thing in R. The code produces plots of wave spectra with decimal days since the Epoch as the x axis and wave period as the Y axis. I am able to convert the date stamp in the input file to a POSIXct object with the following call: date = as.POSIXct(header[[1]][2],tz='GMT',format='%Y%m%d_%k') date "2008-07-11 03:00:00 GMT" So every thing looks groovy, using as.double(date) gives me the number of seconds since the epoch which reproduces the correct date when fed to date -u -r on the command line. However, I can't seem to find a clean way of converting the date to decimal days since the epoch. Using as.double(date)/86400 Gives: 14071.12 Which is a catastrophic loss of significance, the number should be 14071.125 I tried playing around with the format command to see if I could get R to format the date differently, but no luck. Any suggestions? -Charlie -- View this message in context: http://www.nabble.com/Convert-date-to-decimal-days-tp18800462p18800462.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.
