[R] pad leading zeros in front of strings

[R. Michael Weylandt]

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.Du at 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
>
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>
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