Hi all, I have a factor array, and some of the elements are empty. How would I return the index number of the empty elements. For example,
test<-factor(c('A','','B','C','E')) > test [1] A B C E Levels: A B C E I would like the result equal to 2. Thank you, Wendy -- View this message in context: http://r.789695.n4.nabble.com/Find-the-empty-element-in-a-factor-array-tp3238894p3238894.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.