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 [[alternative HTML version deleted]] ______________________________________________ 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.
