Re: [R] convert one digit numbers to two digits one
On Nov 6, 2013, at 8:25 AM, Alaios 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 ?sprintf # other options are linked from that page. [[alternative HTML version deleted]] Sigh. -- David Winsemius Alameda, CA, USA __ 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.
Re: [R] convert one digit numbers to two digits one
(Assuming I understand) tons of ways of doing this. So I'll just point out the ?nchar function, which you can use to count characters in your tail end and paste a 0 if there's only one, e.g. via ifelse() . -- Bert On Wed, Nov 6, 2013 at 8:25 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 [[alternative HTML version deleted]] __ 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. -- Bert Gunter Genentech Nonclinical Biostatistics (650) 467-7374 __ 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.
Re: [R] convert one digit numbers to two digits one
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.
Re: [R] convert one digit numbers to two digits one
All these suggestions of using 'sprintf' might be right but you might be doing it wrong... If you are working with times, then use the date/time classes and the handy functions for working on them. Which means the lubridate package, most likely. Are these times part of a calendar time, or are they just clock times without reference to any day, or are they durations in hours and minutes? On Wed, Nov 6, 2013 at 4:34 PM, Marc Schwartz marc_schwa...@me.com wrote: 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. __ 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.
