Hey, Rers I am new to R and this question may has been asked many times or a very old one. I have checked
the archive but found nothing (maybe I used the wrong key words). any advise is appreciated the question is: I try to replace a col vector with some other values, see edu<-matrix(0,1000,2) edu1<-runif(1000,0,1) edu[,1]<-edu1 the colum vector edu[,1] would have value between 0 and 1. if I want to replace the value of edu[,2] to 1 if edu[,1] less than 0.5, how to do it in the form of matrix but not under a loop structure? I have tried: if (edu[,1]>=0.5) edu[,2]=1 there is only the first 0.5 have been done but not all the others. thanks for any kind answer. Nan from Montreal ______________________________________________ R-help@r-project.org mailing list 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.
