Christoph Heibl wrote: > Dear List, > > must be simple, but i got stuck on this... > > I´ve been trying around for some time, but I could not find a > straigthforward way to do this: > How can one ask if a certain object is element of a certain group of > objects, e.g stored in a vector? > > x <- c("a", "b", "c") > # is there a simple function which returns: > is "a" part of x? > TRUE > is "d" part of x? > FALSE
x <- c("a", "b", "c") "a" %in% x [1] TRUE "d" %in% x [1] FALSE ?is.element > Thanks a lot > Christoph > > ______________________________________________ > 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. -- Chuck Cleland, Ph.D. NDRI, Inc. 71 West 23rd Street, 8th floor New York, NY 10010 tel: (212) 845-4495 (Tu, Th) tel: (732) 512-0171 (M, W, F) fax: (917) 438-0894 ______________________________________________ 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.