Dollar control over the domain of definition of equations

GAMS
1

Hi,

I used the dollar control over the domain of definition of the
equation as follow:

volumebalance(j)$l(j,k) … sum(l(i,j),v(l)) + sum(w(j,n),q(w))=e= sum(l
(j,k),v(l));

but then it announced the error of ‘Uncontrolled set entered as
constant’ at that dollar control. Why did that happen and how can I
fix it? Please help.

Thank you very much.

Sonny
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2

Hi sonny,
your equation volumebalance(j) is defined only over “i” set and the definition of the equation is controlling i,k

you should try redefine your equation like this:

volumebalance(j,k)$l(j,k) … sum(l(i,j),v(l)) + sum(w(j,n),q(w))=e= sum(l
(j,k),v(l));

Hope this helps

Best Regards

2009/3/2 sonny


Hi,

I used the dollar control over the domain of definition of the
equation as follow:

volumebalance(j)$l(j,k) … sum(l(i,j),v(l)) + sum(w(j,n),q(w))=e= sum(l
(j,k),v(l));

but then it announced the error of ‘Uncontrolled set entered as
constant’ at that dollar control. Why did that happen and how can I
fix it? Please help.

Thank you very much.

Sonny



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Daniel Andrés Navia López
Ingeniero Civil Químico
Mg.Sc.Ciencias de la Ingeniería, Mención Ingeniería Química
626752875

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