R help - Jul 2011 - repeat a sequence - but not for a full number of times

Apologies, for a very simple question. I forgot how to do it -
although I remember reading about getting a warning in such a
situation.

I have a data frame. It happens to be 10 rows but it could be 11 or 3 or 13...
x<-data.frame(a=1:10)
I need to add variable "b" that is a sequence of 1:3 - repeated again
and again so that the result is:
x
a b
1 1
2 2
3 3
4 1
5 2
6 3
7 1
8 2
9 3
10 1


Thanks a lot!
-- 
Dimitri Liakhovitski
marketfusionanalytics.com

Never mind - found it:

x<-data.frame(a=1:10)
x$b<-rep(1:3,nrow(x)%/%3,len=nrow(x))

Dimitri

On Wed, Jul 20, 2011 at 6:15 PM, Dimitri Liakhovitski
<dimitri.liakhovitski at gmail.com> wrote:
> Apologies, for a very simple question. I forgot how to do it -
> although I remember reading about getting a warning in such a
> situation.
>
> I have a data frame. It happens to be 10 rows but it could be 11 or 3 or
13...
> x<-data.frame(a=1:10)
> I need to add variable "b" that is a sequence of 1:3 - repeated
again
> and again so that the result is:
> x
> a b
> 1 1
> 2 2
> 3 3
> 4 1
> 5 2
> 6 3
> 7 1
> 8 2
> 9 3
> 10 1
>
>
> Thanks a lot!
> --
> Dimitri Liakhovitski
> marketfusionanalytics.com
>


-- 
Dimitri Liakhovitski
marketfusionanalytics.com