Hello, I got a problem with set defining since I am a beginner and I appreciate if somebody helps me here. I have a data set as below Rank Person1 Next_person Money 1 A B 100 1 A B 120 2 A B 120 1 B C 110 1 B C 120 2 B C 120 I am skiping rest of the table here. First column is rank of the person, second column is the person and the third column is the person next to person1. The last column shows the money person1 s. I already define this set in my optmodel: set<num, str, num> rank_per_mny; rank_per_mny = [Rank Person1 Money] Then I need to have kind of a product of this set with itself to give me a set as : {Rank,Person1,Money(for person1),Money(for Next_person)} Basically, I want to add the next_person money to the previous set (for the same rank) and I think it is a product between this set and itself. For this example the set I need will be this: {1,A,100,110}, {1,A,100,120}, , {1,A,120,110}, , {1,A,100,120}, , {2,A,120,120}, I wrote the followingcode but I it does not get the correct values. Like it should start the Money for next_person from 110 but it starts from 100 again. I appreciate your help. proc optmodel; set<num, str, num> rank_per_mny; rank_per_mny = [Rank Person1 Money]; set<num, str,str, num> rank_per_mny_mny; rank_per_mny_mny = [Rank Person1 Next_person Money]; set< number> money; set< num, str, num > assign; set< num, str, num,number> cross; for {< Rank, Person1, Next_person, Money > in rank_per_mny_mny } money = setof{< Rank Next_person Money > in rank_per_mny } Money ; assign = setof{< Rank Person1 Money > in rank_per_mny }{<Rank Person1 Money>; cross = cross union (assign cross price); Thank you!
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