Hello. Can I just know how to compare two different arrays, but take only the elements from first array (both arrays are multidimensional). Its just opposite of "intersect" option in R. Thanks in advance -- View this message in context: http://r.789695.n4.nabble.com/Array-Comparision-tp2328121p2328121.html Sent from the R help mailing list archive at Nabble.com.