GAMS World Forum

Of course R Hi Roger I was trying to write the Parameter flag2 flag2(nn)$(qr.l(nn) > 0 ) = flag(nn) ; but not using different models, How I supposed to program this, in the same model? It's indicated a error : ( qr.l(nn) ) *** Error 141 in D:\.....gms Symbol neither initialized nor assigned A wild ...

Hi Renger, It it possible to do this same idea, using all the equation at the same model? Hi qr is a variable, so one should use qr.L in the parameter and you should stage it like this (don't repeat the line with the definition of the parameter). If you still have a division by zero, this can be cau...

Thank you very much Renger,
it helped me a lot.
it still hasn't solved my problem, but for what I'm trying to do, it worked really well.

Thank you very much Roger, this is exactly what I wanted. But I think my code is not considering my variable as a SET. For when I insert an error is presented: 472 flag (n, np) $ (qr (n, np)> 0) = 1; **** $143 Did you know how to put this variable as a SET together with the value? so that I can cons...

Hi, I'm with a problem that I have a problem with 2 models. The first is ok, my model optimize the flow at the tubes. At the second I need to use equations, using that flow, but the tubes with no flow (zero), it shod be exclude. But I don't know how to express this condition. My model is showing thi...

Yes, thanks. Hi, you should always check the model and solver status. S O L V E S U M M A R Y MODEL Rede OBJECTIVE cost TYPE MINLP DIRECTION MINIMIZE SOLVER SBB FROM LINE 122 **** SOLVER STATUS 4 Terminated By Solver **** MODEL STATUS 9 Intermediate Non-Integer **** OBJECTIVE VALUE 7.0711 Intermedia...

Hi I have no more ideas to correct my model.
I don't know why my binary variables is not a binary.
The binary result is not a binary, even declaring that as "Binary Variable"

could some one help me with this?

I found a solution, I tried to insert into my code but it not worked, a error is indicated as 250 in the manual have the possibility to work with "Many-to-Many Mapping" I insert the same exemplo of the manual and the error was the same. but I'm using GAMS 22.5, could It (Many-to-Many Mappi...

Hi I with a problem that I don't know how to declare, if is a SET or a PARAMETER. I want that conditions result in a relation of the possibilities (t) with the arcs (nn). Set n nodes / n1 * n3 / nn(n,n) tub t connection type / t1 * t4 / p(n,n,t) connection possibilities of stretches I'd like a relat...

Thanks for your time, and I'm sorry if I was not so clear, Your assumptions is right. Changed the situation but still not working. " ir1 are variables. Do they have any bounds on them? " Yes, here it is: they are too small so I tried the scalar function, explained at the end. Scalars imin ...