Suppose I have two sets: n1 and n2, where card(n1) > card(n2). And we have two set of variables x(n1) and y(n2). Furthermore, I have a set nn(n1) (i.e., nn is a subset of n1), in which the number of yes's is equal to card(n2).
I want to define the set of constraints x(nn) = y(n2). In other words, a subset of vector x is to be equal to vector y. I couldn't manage to do that. I naively tried:
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Set nn(n1); nn(n1)$(n1.pos > 96 and n1.pos <= 2*96) = yes; Equations p_coup(n2,n1) ; p_coup(nn,n1).. x(n1) =e= y(n2) ;
which gives my favorite error: uncontrolled set entered as a constant. Anybody can help me about this?