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
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