Hi Magali,

I confess that I still not figured out what you want,
but try this:

datatry2=transform(datatry,DIS=as.numeric(as.character(paste(datatry[,1],datatry[,2],sep=""))))

bests

milton

On Wed, Jan 20, 2010 at 11:14 PM, teurlai magali <teurlaimag@yahoo.fr>wrote:

> Sorry I forgot the subject in my previous post
>
> Here is an example of data : province and district code of 4 locations
>
> datatry=matrix(c(8,12,3,3,1,1,16,1),4,2)
> colnames(datatry)<-c("PROCODE","DISCODE")
>
> DISCODE is not unique for each location (there is a distrcit nb 1 in each
> province)
> I want to create a third column (DIS) which would contain a unique district
> code for each location that would be the appended values of the province
> code and the district code, and that would be a numeric value (not a
> character)
>
> here is my try (thanks to Henrique Dallazuanna!)
>
> DIS=rep(0,nrow(datatry))
> datatry=cbind(datatry,DIS)
> datatry2=transform(datatry,DIS=paste(datatry[,1],datatry[,2]));
>
> However it creates a string, and the 2 codes are separated by an empty
> space, which I didn't manage to supress using different values for arguments
> "sep" and "collapse".
>
> i'll try to see other options to concatenate 2 numeric values into a third
> one.
>
> Thanks
>
>
> --- En date de : Jeu 21.1.10, Henrique Dallazuanna <wwwhsd@gmail.com> a
> écrit :
>
> De: Henrique Dallazuanna <wwwhsd@gmail.com>
> Objet: Re: [R] (no subject)
> À: "teurlai magali" <teurlaimag@yahoo.fr>
> Cc: r-help@r-project.org
> Date: Jeudi 21 Janvier 2010, 3h41
>
> transform(DF, District_Unique = paste(Province, District, collapse = ''))
>
> On Thu, Jan 21, 2010 at 12:34 AM, teurlai magali <teurlaimag@yahoo.fr>
> wrote:
> > Hi
> >
> > is there a way in R to create a new column vector with the numbers of 2
> others columns simply appended?
> >
> > Example : I have a column with provinces codes (1 to 19)
> > I have a second column with districts codes (1 to ##, depending on the
> province)
> > I want to create a third column with a code that would be unique for each
> district:
> >
> > Province  District   District_Unique
> > 1             1            11
> > 1             2            12
> > 13           2            132
> >
> > I can create a loop, but it becomes complicated with numerous data
> >
> > Thanks for your help
> >
> >
> >
> >
> >
> >        [[alternative HTML version deleted]]
> >
> >
> > ______________________________________________
> > R-help@r-project.org mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html<http://www.r-project.org/posting-guide.html>
> > and provide commented, minimal, self-contained, reproducible code.
> >
> >
>
>
>
> --
> Henrique Dallazuanna
> Curitiba-Paraná-Brasil
> 25° 25' 40" S 49° 16' 22" O
>
>
>
>
>        [[alternative HTML version deleted]]
>
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html<http://www.r-project.org/posting-guide.html>
> and provide commented, minimal, self-contained, reproducible code.
>
>

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