[R] (no subject)

[David Winsemius]

On Jan 20, 2010, at 9:34 PM, teurlai magali 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
>
Better to put in a separator. That way you can tell Prov=1, Distr=11  
from Prov=11, Distr=1.  Try:

df$Distric_Unique <- with(df, paste(Province, District, sep=".") )


> I can create a loop, but it becomes complicated with numerous data
>
> Thanks for your help
>
>
>
>
>
> 	[[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at 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
> and provide commented, minimal, self-contained, reproducible code.

David Winsemius, MD
Heritage Laboratories
West Hartford, CT