On Thu, 2006-10-19 at 12:23 -0700, Yanqin Yang wrote: > Hello, > > Would anyone kindly tell me how to remove the empty element in the vector > object? > For example, > > x > [1] "a" "" "" "c" "c" "c" "d" > > unique(x) > [1] "a" "" "c" "d" > How could I get the output like: "a","c","d"? > > Thanks, > > Yanqin
It depends upon what you mean by removing the empty elements. If you want to just get the set of values that are not "": > x[x != ""] [1] "a" "c" "c" "c" "d" If you want the output exactly as you have it above, which is eliminating the repeated values: > unique(x[x != ""]) [1] "a" "c" "d" See ?Extract, ?Comparison and ?Syntax for more information. HTH, Marc Schwartz ______________________________________________ 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 and provide commented, minimal, self-contained, reproducible code.
