GAMS World Forum

Hi As you don't seem to scale the model 1E-5 is negligible. However, not that convergence will probably only to this level. Some notes to your model: - You don't have to fix the variables to check the model. The better and more efficient way is to set the iteration limit to zero (cge.iterlim = 0) an...

Hi Simon
I am at a loss. But it isn't very important as you read lsl correctly defined over the sets.
Cheers
Renger

Hi Ashraf

If you want the help of people in the forum, please read the "Rules" of this forum and formulate your question according to these rules.
Cheers
Renger

Hi Simon

Could you attach your excel sheet, so I can check what the problem is.?

Cheers
Renger

Hi

You can use $-operators in equations, however, you can't, in an MCP model, use variables in the $-conditions. You should replace QA by QA0.
Read my answers to this topic this.

Cheers
Renger

Hi The error means that you have declared a parameter, variable or set within the loop. Assignments (... = ...;) are allowed but declaration are not. YOu have to put the declarations before the loop starts. Renger PS. Your code doesn't reproduce this error. Next time, please add the code that reprod...

There is a button "new topic" in every board ("syntax", "solvers", etc.) .
Cheers
Renger

Hi

You can add the dollar constraint like this:

Code: Select all

deltaCET(a)$(PDA0(a) > 0 and QE(0) > 0) =PDA0(a)*QDA0(a)**(1-rhoCET(a))/(PDA0(a)*QDA0(a)**(1-rhoCET(a))+PE0(a)*QE0(a)**(1-rhoCET(a)));

Cheers
Renger

Hi This kind of error is mostly due to having no starting values for the variables. Gams assumes in that case 0, causing an error in the power function. As your model is a CGE model, you should start with an equilibrium based on your SAM data. This means if you plug in all the values of your SAM and...

Hi Jan

Here a trick to do that:

Code: Select all

* Ad the following to your code
parameter counter /0/;

repeat
   counter = counter + 1;
...

      results4(solu,k,"z")$(solu.val = counter) = Z.L(k);
      results3(solu,j, "X")$(solu.val = counter) = X.L(j););
...

Cheers
Renger

GAMS World Forum

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