R help - May 2008 - Format integer

Hi,
What's one way to convert an integer to a string with preceding 0's?
such that
'13' becomes '00000000013'
to be put into a string

I've tried formatC, but they removes all the zeros and replace it with
blanks

Thanks

-- 
Regards,
Anh Tran

	[[alternative HTML version deleted]]

Try something like one of these (as documented in ?formatC)

 > formatC(13, flag="0", width=10)
[1] "0000000013"
 > sprintf("%010g", 13)
[1] "0000000013"
 >

Anh Tran wrote:
> Hi,
> What's one way to convert an integer to a string with preceding
0's?
> such that
> '13' becomes '00000000013'
> to be put into a string
> 
> I've tried formatC, but they removes all the zeros and replace it with
> blanks
> 
> Thanks
>

Anh Tran wrote:
> Hi,
> What's one way to convert an integer to a string with preceding
0's?
> such that
> '13' becomes '00000000013'
> to be put into a string
> 
> I've tried formatC, but they removes all the zeros and replace it with
> blanks
Not so for me:

formatC(13, digits=10, flag="0")

Uwe LIgges

> 
> Thanks
>

Thanks. formatC(flag) works.

But it's awefully slow. I try to do that for 65000 numbers (generating ID
for each item) and it seems like forever.
Is there any faster way?

Thank all.

Anh Tran

On Mon, May 12, 2008 at 2:36 PM, Uwe Ligges <
ligges@statistik.uni-dortmund.de> wrote:
>
>
> Anh Tran wrote:
>
> > Hi,
> > What's one way to convert an integer to a string with preceding
0's?
> > such that
> > '13' becomes '00000000013'
> > to be put into a string
> >
> > I've tried formatC, but they removes all the zeros and replace it
with
> > blanks
> >
>
> Not so for me:
>
> formatC(13, digits=10, flag="0")
>
> Uwe LIgges
>
>
>
> > Thanks
> >
> >

-- 
Regards,
Anh Tran

	[[alternative HTML version deleted]]

On May 12, 2008, at 5:22 PM, Anh Tran wrote:
> Hi,
> What's one way to convert an integer to a string with preceding
0's?
> such that
> '13' becomes '00000000013'
> to be put into a string
>
> I've tried formatC, but they removes all the zeros and replace it with
> blanks
formatC(13, width=10, format="d", flag="0")
> Thanks
>
> -- 
> Regards,
> Anh Tran
Haris Skiadas
Department of Mathematics and Computer Science
Hanover College

Anh Tran wrote:
> Hi,
> What's one way to convert an integer to a string with preceding
0's?
> such that
> '13' becomes '00000000013'
> to be put into a string
> 
> I've tried formatC, but they removes all the zeros and replace it with
> blanks
Hi,

try sprintf:

 >i=13
 > cat(sprintf("%05d\n", i))
00013
 >

HTH,

Esmail