R help - Feb 2010 - Number with fixed digit length - zero fill-up

Dear R-help members,

I'm quite new to R and I apologize for my basic question, but I haven't
been able to find a solution yet.

I try to interpret vector entries as a binary code, but unfortunately
every first digit which is zero disappears.

So how can I set any number (e.g. x = 10110) to a 8-digit zero fill-up (x
= 00010110) in order to address digit indices?

Or other way round, how can I make the 'substr' function to count from
the
right hand side?

Thank you.

With kind regards,

Jonas J?germeyr


Department of Geography
Humboldt-University of Berlin
jonas.jaegermeyr at geo.hu-berlin.de

Here is one way:

 > sprintf( "%08d", 10110 )
[1] "00010110"

Romain

On 02/01/2010 09:00 AM, J?germeyr, Jonas wrote:
>
> Dear R-help members,
>
> I'm quite new to R and I apologize for my basic question, but I
haven't
> been able to find a solution yet.
>
> I try to interpret vector entries as a binary code, but unfortunately
> every first digit which is zero disappears.
>
> So how can I set any number (e.g. x = 10110) to a 8-digit zero fill-up (x
> = 00010110) in order to address digit indices?
>
> Or other way round, how can I make the 'substr' function to count
from the
> right hand side?
>
> Thank you.
>
> With kind regards,
>
> Jonas J?germeyr
>
>
> Department of Geography
> Humboldt-University of Berlin
> jonas.jaegermeyr at geo.hu-berlin.de

-- 
Romain Francois
Professional R Enthusiast
+33(0) 6 28 91 30 30
http://romainfrancois.blog.free.fr
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