Michael, I'm curious: if you pass sprintf() a string, it still pads with zeros? What's the output of:
sprintf("%05s", "123") sprintf("%05s", "abc") On linux, sprintf() pads strings with spaces, as you'd expect. Padding strings with zeros is... odd. Sarah > sessionInfo() R version 2.15.0 (2012-03-30) Platform: x86_64-redhat-linux-gnu (64-bit) locale: [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C [3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8 [5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8 [7] LC_PAPER=C LC_NAME=C [9] LC_ADDRESS=C LC_TELEPHONE=C [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C attached base packages: [1] stats graphics grDevices utils datasets methods base loaded via a namespace (and not attached): [1] tools_2.15.0 On Tue, May 22, 2012 at 2:49 PM, R. Michael Weylandt <michael.weyla...@gmail.com> wrote: > I think once upon a time this was found to be OS-dependent since it > calls the system's C sprintf() -- I get the leading zeros on Mac. I > presume you're on Windows? > > Michael > > On Tue, May 22, 2012 at 2:41 PM, Hui Du <hui...@dataventures.com> wrote: >> Dear All, >> >> This question sounds very simple but I don't know where I am wrong. I just >> want to pad leading zeros in some string, for example, "123" becomes >> "00123". What is wrong if I do following? >> >>> sprintf("%05s", "123") >> [1] " 123" >> >> >> It didn't return "00123", instead it padded with 'blank'. >> >> >> Thank you for your help in advance. >> >> HXD >> -- Sarah Goslee http://www.functionaldiversity.org ______________________________________________ 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.