Hi, The question is not clear. May be this helps: set.seed(29) dat1<- as.data.frame(matrix(sample(c(0:7,NA),10*10,replace=TRUE),ncol=10)) which(is.na(dat1)) #[1] 11 23 24 28 37 43 47 72 77 87 #missing value index for each column sapply(dat1,function(x) which(is.na(x)))
A.K. how to Keep a record of the observations deleted because of missing? Please help me ______________________________________________ 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.
