Notational confusion: At the end of my last post on this subject, I wrote: << The TP's are clearly *not* UD if the Q(i,j) have enough 0's among them. But I think in that case all the TP's going to point (i,j) with Q(i,j) > 0 *are* UD, so the TP's that are non-UD would seem to be irrelevant.
but forgot to change the expression Q(i,j) to T(i,j). So it should read: << The TP's are clearly *not* UD if the T(i,j) have enough 0's among them. But I think in that case all the TP's going to point (i,j) with T(i,j) > 0 *are* UD, so the TP's that are non-UD would seem to be irrelevant.
Hope that makes more sense. --Dan ________________________________________________________________________________________ It goes without saying that .