From: alexbri <alexbri_at_netcabo.pt>

Date: Sun 20 Mar 2005 - 04:03:40 EST

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 Received on Sun Mar 20 04:10:39 2005

Date: Sun 20 Mar 2005 - 04:03:40 EST

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:

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

alexbri@netcabo.pt

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 Received on Sun Mar 20 04:10:39 2005

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