Hello, The symmetric set difference of A and B is the set of elements in A or B but not in A intersection B, i.e., ( (A U B) \ (A intersection B) ).
The asymmetric set difference of A and B is the set of elements of A except those in B, i.e., (A \ B). Best regards, Carlos J. Gil Bellosta http://www.datanalytics.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.
