On 27/05/2016 7:00 PM, Santosh wrote:
Dear Rxperts!Is there a way to compute relative values.. using within().. function? Any assistance/suggestions are highly welcome!! Thanks again, Santosh... ___________________________________________________________________ A sample dataset and the computation "outside" within() function is shown.. q <- data.frame(GL = rep(paste("G",1:3,sep = ""),each = 50), G = rep(1:3,each = 50), D = rep(paste("D",1:5,sep = ""),each = 30), a = rep(1:15,each = 10), t = rep(seq(10),15), b = round(runif(150,10,20))) r <- subset(q,!duplicated(paste(G,a)),sel=c(G,a,b)) names(r)[3] <- "bl" s <- merge(q,r) s$db <- s$b-s$blhead(s,5)G a GL D t b bl db 1 1 1 G1 D1 1 13 13 0 2 1 1 G1 D1 2 16 13 3 3 1 1 G1 D1 3 19 13 6 4 1 1 G1 D1 4 12 13 -1 5 1 1 G1 D1 5 19 13 6
Just use s <- within(s, db <- b - bl) Duncan Murdoch ______________________________________________ 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.
