GAMS World Forum

Thank you Atharv!

Hello all, how can I adjust the option optcr in the option file so that I can use a value (scalar) from the gdx file for this? SCALAR rel_opt_tolerance Relative Optimality criterion; $Onecho > cplex.opt threads=1 tilim=120 optcr=rel_opt_tolerance datacheck 2 mipdisplay 4 $Offecho I have attached a p...

Perfect! Thank you

Hello all, How can I generically import the data circled in the image into an emp file? EMP File image.JPG Suppose I load the data (a1=0.3 , a1=0.95, b1=0.5, b2=1, c1=0.2, c2=1.05) from Excel as scalars. As an example serves the model Glad to have your help :) Many greetings Janisch Transport_Stocha...

Thanks for your answer :) Now it works. I had a thinking error when assigning the stages :roll: But i have a second question: :) Is it possible to read in the distribution probabilities and the corresponding discrete demand quantities from Excel? Because these have to be written directly in the foll...

Thanks already! The new constraint works well. But I still have the problem that my ObjFunction should not be in Stage 2. I have kept to the example Transport_Stochastic. In this formulation the target function is also not in Stage 2. How can I reformulate my model so that the equation is assigned t...

Great, thanks for your help. My problem is also that only the ObjFunction("Cost") depends on ud. How can I force that at least the lowest demand is served, if I optimize for example the time as objective function? Because otherwise the individual optimization of the time and the CO2e will ...

So I tried to get the model to run using emp notations. Now a syntax error appears that I don't understand: Error Cannot open parameter file Error Error code = 2 I have attached the adapted code and the error message. I hope somebody can help me with this error AUGMECON_R.gms INPUT.gdx INPUT_scalar....

Hello all, I would like to add a stochastic component to my optimization. More precisely, I would like to make the demand parameter B stochastic. It should fluctuate around the predefined value, which comes from the input GDX file, with a defined maximum percentage deviation. Now my question which a...

Awesome! Thank you