Hi, When I emulate what's suggested I get an error (shown below). What does this mean? Thank you.
> Province <- c(1, 1, 13) > District <- c(1, 2, 2) > > df$Distric_Unique <- with(df, paste(Province, District, sep=".") ) Error in eval(substitute(expr), data, enclos = parent.frame()) : invalid 'envir' argument > Regards, Tena Sakai tsa...@gallo.ucsf.edu On 1/20/10 6:45 PM, "David Winsemius" <dwinsem...@comcast.net> wrote: > > On Jan 20, 2010, at 9:34 PM, teurlai magali wrote: > >> Hi >> >> is there a way in R to create a new column vector with the numbers >> of 2 others columns simply appended? >> >> Example : I have a column with provinces codes (1 to 19) >> I have a second column with districts codes (1 to ##, depending on >> the province) >> I want to create a third column with a code that would be unique for >> each district: >> >> Province District District_Unique >> 1 1 11 >> 1 2 12 >> 13 2 132 >> > Better to put in a separator. That way you can tell Prov=1, Distr=11 > from Prov=11, Distr=1. Try: > > df$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@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 > > ______________________________________________ > 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 > and provide commented, minimal, self-contained, reproducible code. ______________________________________________ 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 and provide commented, minimal, self-contained, reproducible code.
