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.
