GAMS World Forum

Hi, You read text1 as a 5-dimensional set. Hence, given the structure of the data in the csv file, it is expected that the domain sets Dim1,...,Dim5 contain the empty element. If you need to read the sets separately, the only way to do this with csv2gdx is to put them in different csv file. You coul...

Can you share the source file moi.gms?

Fred

There is no problem. It is usual that the initial point is not feasible. Look for example at the trnsport model. The equation listing shows ---- demand =G= satisfy demand at market j demand(new-york).. x(seattle,new-york) + x(san-diego,new-york) =G= 325 ; (LHS = 0, INFES = 325 ****) demand(chicago)....

Hi Teo,

You could use a dollar condition as follows I hope this helps!

Fred

Hi, You are referring to the equation listing which provides information about the generated model before it is solved. Infes=... indicates that the equation is infeasible for the given start point (i.e. based on the current levels of variables when the model is generated). "remaining ... entri...

The screenshot indicates that the job was not yet completed. Otherwise you would see in the log (or some error message if there are any issues).
Can you please share the full log file?

Best,
Fred

Hi Jun Keat,

There are different gdx file created. soleps.gdx seems to have the information you are looking for.

Fred

You could use convert with option CplexLP.

I hope this helps!

Fred

Hi, If all solvers return an optimal solution with objective value 44.2, my guess is that your own "solution" with objective value 43.8 is wrong. One way to go about analyzing this could be to provide your solution to the problem by manually setting the variable level values (x.l(i,j) = .....

Hi,

The error message says it all. You should not type the "?". This was meant as a placeholder for whatever number you would like to enter there for your model.
The documentation might also be helpful: https://www.gams.com/32/docs/UG_GamsCal ... MSAOlimrow

I hope this helps!

Fred