On Nov 6, 2013, at 10:25 AM, Alaios <ala...@yahoo.com> wrote: > Hi all, > the following returns the hour and the minutes > > paste(DataSet$TimeStamps[selectedInterval$start,4], > DataSet$TimeStamps[selectedInterval$start,5],sep=":") > [1] "12:3" > > the problem is that from these two I want to create a time stamp so 12:03. > The problem is that the number 3 is not converted to 03. Is there an easy way > when I have one digit integer to add a zero in the front? Two digits integers > are working fine so far, 12:19, or 12:45 would appear correctly > > I would like to thank you in advance for your help > > Regards > Alex
This is an example where using ?sprintf gives you more control: > sprintf("%02d:%02d", 12, 3) [1] "12:03" > sprintf("%02d:%02d", 9, 3) [1] "09:03" The syntax '%02d' tells sprintf to print the integer and pad with leading zeroes to two characters where needed. Regards, Marc Schwartz ______________________________________________ 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.