Will it always be A’s or will there be a mix please? On Sat, Feb 9, 2019 at 11:06 AM Val <valkr...@gmail.com> wrote:
> 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. > -- 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.
