GAMS World Forum

CGE is not a model type in GAMS but a class of economic models (https://en.wikipedia.org/wiki/Computable_general_equilibrium) that are often implemented as MCP or NLP GAMS model types. NLP model types can be combined with discrete variables resulting into the MINLP type. All variable types in GAMS c...

This now sounds like a version mix up. Which GAMS system is active? Why did the GAMS installation files end up in the USER_BASE directory rather than the site-package directory of the conda environment? I also see that you had interaction with GAMS support and ran python setup.py install from the Po...

The trick is to represent x as 2*y + z where y is another integer variable and z a binary. x can even be continuous but will automatically assume integer values. z=1 tells you that x is odd, z=0 tell you that x is even. You can use the binary variable z in some logic constraints to enforce your othe...

Was the "python setup.py install" successful? Perhaps you can share the output of the command. What about setting the SETUPTOOLS_USE_DISTUTILS environment variable? -Michael

What anaconda version, what Python version? See https://conda.io/projects/conda/en/late ... vironments to produce a spec list. Please share this and give the exact sequence of command that resulted in the failure.

-Michael

There is currently no "pip" for the GAMS modules. So not clear what you mean by "pip install". The install of the GAMS modules works by "cd <gams_sysdir>\apifiles\Python\api_39 && python setup.py install" as you can read from https://www.gams.com/latest/docs/API...

If you look at the constraint, it needs to be indexed by t and j. Your GAMS code indexes by t, j, and tp. I see no reason for tp. Moreover, when you sum over a tuple (tp,k) your syntax was just wrong. Here is the (IMHO) correct version of Eqn11: Eqn11(PL(j),t).. sum((tp,k)$(ord(tp)<=ord(t)),NU(j,k,t...

Send the entire model because compilation errors often relate to other code pieces.

-Michael

In the "else" or false_expression part of the function: ifthen(expression, true_expression, false_expression). -Michael

I think this comes pretty close: https://www.gams.com/latest/docs/T_GDXX ... DSHEET_PAR. Experiment and see how to adjust it to your own situation. Good luck.

-Michael