Am I missing something? It seems quite easy to me: Suppose the intervals are (l1, u1), (l2, u2), ..., (ln, un). The intersection, if non-empty, would be (max(l1, ..., ln), min(u1, ..., un)), and the union (min(l1, ..., ln), max(u1, ..., un)).
Andy > From: Sean Davis > > I have a number of regions consisting of (start,end) pairs. > I would like to > find regions of overlap among various sets of these regions. In other > words, I would like to find unions/intersections of arbitrary sets of > regions. Does this smell of anything anyone has already done? > > Thanks, > Sean > > ______________________________________________ > 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 > > > ______________________________________________ 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
