ValueError: Constructing SetOperator A with incompatible data with v6.x

[Emmanuel Twum]

Dear Pyomo Team, 

I have an error (it seems to be index set related) popping up from my model instance = model.create_instance(data) when it runs.

I have gone through the error and the class of the base code where it seem to be coming from, but can't seem to figure it out so far. I have solved this model in the Pyomo version 5.x without this issue, so I am not sure this error this time with version 6.x. 

I have attached sample of my model, the excel data file, and details about the error for your reference.

Thank you in advance for the help!

[Sebasta Joséi]

Hi.

You can't do that with excel files. If you want to initialize data in the create_instance function, it should be in .dat format. Here an example:

https://github.com/SebastianJHM/dev/tree/main/Python/Optimization%20Pyomo/Picking

If you want to read data from an external excel file, in your script you need a function that reads this file and saves data in variables. After that, you initialize the model with this information. Here another example:

https://github.com/SebastianJHM/dev/blob/main/Python/Optimization%20Pyomo/Picking%20Read%20and%20Write/PickingRW.py

Regards

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[Emmanuel Twum]

Hi Sebesta, thank you for the response. I am currently reviewing these two resource links to see which one would be best for my use case.

To view this discussion on the web visit https://groups.google.com/d/msgid/pyomo-forum/CACkU_%3D9o6YqNrRoFOcvQZwVj7fKDnktcM3qDmsBESD2q2pa60g%40mail.gmail.com.

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