Hello, I'm new in R and I want to do one thing that is very easy in excel, however, I cant do it in R.
Suppose we have the data frame: data<- data.frame(A=c("a1","a2","a3","a4","a5")) I need to obtain another column in the same data frame (lets say B=c(b1,b2,b3,b4,b5) in the following way: b1=a1/(a1+a2+a3+a4+a5) b2=a2/(a2+a3+a4+a5) b3=a3/(a3+a4+a5) b4=a4/(a4+a5) b5=a5/a5 a1..a5 and b1...b5 are always numeric values (this is just an example, what I really want is apply this kind of formula to a much larger data frame) I think this is easy for those who are used to work in R (and I suppose there are many different ways), but I can make it in this moment, because I cannot leave behind, the "excel thinking way". I hope you understand my problem and please, help me soon. Alexandre [EMAIL PROTECTED] ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html