Search found 48 matches

by Clemens
2 years ago
Forum: API
Topic: model2tex
Replies: 4
Views: 2273

Re: model2tex

The overflowing problem is well known to us. Unfortunately so far we do not have a general solution for this. model2tex is written in Python and implements a stack machine that works on the instructions generated by the GAMS compiler. If you put a $debug dmpins at the end of a model you can look at ...
by Clemens
2 years ago
Forum: API
Topic: model2tex
Replies: 4
Views: 2273

Re: model2tex

Hi, This seems to be a bug in model2tex regarding SOS variables. Thank you very much for reporting. For now you could temporarily change your SOS variables to non-SOS variables to see if this lets you generate the LaTeX file. Afterwards you can change them back to SOS variables. The only effect on t...
by Clemens
2 years ago
Forum: API
Topic: GAMS and Python 2
Replies: 2
Views: 1114

Re: GAMS and Python 2

David,

You might want to specify the output argument in GamsJob.run() in order to redirect the GAMS log. Assuming that t1 is an instance of type GamsJob, the following code will print the log to stdout:

Code: Select all

t1.run(output=sys.stdout)
Hope that helps,
Clemens
by Clemens
2 years ago
Forum: API
Topic: GAMS and Python
Replies: 3
Views: 2938

Re: GAMS and Python

David, The return code you receive indicates a compilation error. When an instance of GamsWorkspace is created, the working_directory is set to a temporary directory. The GamsJob.run() call runs the model in this directory. If your model relies on certain other files like include or GDX files, the G...
by Clemens
2 years ago
Forum: API
Topic: model2tex on macOS
Replies: 8
Views: 2103

Re: model2tex on macOS

Hermann,

The use of GAMS singleton sets in your model cause a problem in model2tex. The bug will be fixed in future releases of GAMS. Thank you very much for reporting this!

Best,
Clemens
by Clemens
2 years ago
Forum: API
Topic: model2tex on macOS
Replies: 8
Views: 2103

Re: model2tex on macOS

Hermann, This seems to be related to your model. Is it possible to give me access to your model or to the files generated by the docFile command? A minimal example that generates this error would also be sufficient. GAMS syntax can be quite versatile and most likely there is another bug in model2tex...
by Clemens
2 years ago
Forum: API
Topic: model2tex on macOS
Replies: 8
Views: 2103

Re: model2tex on macOS

Hermann, This is a bug that will be fixed in future releases of GAMS. Thank you very much for reporting this. The actual problem is a wrong library dependency in the file _gdxcc.so . You can fix the problem on your machine by navigating into your GAMS system directory using a Terminal. In a sub dire...
by Clemens
2 years ago
Forum: API
Topic: model2tex on macOS
Replies: 8
Views: 2103

Re: model2tex on macOS

Hermann, The GAMS file you found is part of the GAMS Test Library which is primarily designed to be used for testing by the GAMS staff. Therefore certain models in this library might have specific prerequisites. For model2tex1.gms, an environment variable called PYTHON27 needs to be set to a Python ...
by Clemens
2 years ago
Forum: API
Topic: Python API Installation User Folder
Replies: 1
Views: 1363

Re: Python API Installation User Folder

Hello, Thank you for providing the "--user" problem. We will look into this and see how to fix this. Most likely it is a problem in our setup scripts. Note that you can also always set the PYTHONPATH in order to tell the Python interpreter where to look for modules. The actual problem you are facing...
by Clemens
2 years ago
Forum: API
Topic: Modify multidimensional parameter with Python GamsModelInstance
Replies: 1
Views: 1211

Re: Modify multidimensional parameter with Python GamsModelInstance

Please have a look at the transport7.py example: https://www.gams.com/latest/docs/apis/examples_python/transport7_8py_source.html Although it doesn't show how to modify a two dimensional parameter, it shows both the use of a scalar parameter and a two dimensional variable. Instead of adding a scalar...