[R] sequence of equal-length numbers (for filenames)

[Henrique Dallazuanna]

Try sprintf:

sprintf("%03d", Sequence)
sprintf("file%03d.dat", Sequence)




On Mon, Jan 25, 2010 at 10:39 AM, Žroutík <zroutik at gmail.com> wrote:
> Dear R-users,
>
> I'd like to create filenames in a mask "file000.dat" numbered from 1 to e.g.
> 123. The last problem I'm dealing with is creating the sequence of numbers
> with equal length, i.e. 001, 002,.... 023, 024,.... 122, 123.
>
> The closest I got is by a repetition:
>
> Sequence <- c(1:123)
> for(i in c(1:length(Sequence))) {
> print(
>    paste(rep("0",
> max(nchar(as.character(Sequence)))-nchar(as.character(Sequence[i]))),
>    as.character(Sequence[i]),
>    sep=""))
> }
>
> where pasting "0"-replication the missing-times I 'm possibly creating the
> desired output. It's just that rep()'s output is not a vector and not
> subsequent atoms. and gives "02" and "02" instead of "002".
>
> Any idea hot to correct the function above or suggestions on
> file000.dat-mask filename, please?
>
> Thank you for your time.
> M
>
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>
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-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O