Thank you Erin and Rui!
On Sat, Feb 9, 2019 at 1:08 PM Erin Hodgess <erinm.hodg...@gmail.com> wrote: > > Nice, Rui! Thanks > > On Sat, Feb 9, 2019 at 11:55 AM Rui Barradas <ruipbarra...@sapo.pt> wrote: >> >> Hello, >> >> The following will do it. >> >> mydataframe$dvar <- c(sapply(mydataframe[-1], nchar) %*% c(1, -1)) >> >> >> Hope this helps, >> >> Rui Barradas >> >> Às 18:05 de 09/02/2019, Val escreveu: >> > Hi All, >> > In a given data frame I want to compare character values of two columns. >> > My sample data looks like as follow, >> > >> > mydataframe <- read.table( text='ID var1 var2 >> > R1 AA AAA >> > R2 AAA AAA >> > R3 A AAAA >> > R4 AA A >> > R5 A AAA', header = TRUE, as.is = TRUE ) >> > >> > For each ID, I want create the third column "dvar" as difference >> > between var1 and var2 >> > Row1( R1) the "dvar" value will be -1 and the complete desired out >> > put looks like as follow. >> > >> > ID var1 var2 dvar >> > R1 AA AAA -1 >> > R2 AAA AAA 0 >> > R3 A AAAA -3 >> > R4 AA A 1 >> > R5 A AAA -2 >> > >> > How do i do this? Any help please? >> > Thank you >> > >> > ______________________________________________ >> > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see >> > 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 -- To UNSUBSCRIBE and more, see >> 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. > > -- > Erin Hodgess, PhD > mailto: erinm.hodg...@gmail.com ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
