Removed the initialize argument #40
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Removing the initial value for bigM might not be a good option. Can we try something else? @AlbertLee125 |
The initial parameter for a Suffix object in Pyomo expects a dictionary or a callable (such as a function) that maps components to values. It does not accept a single integer value. |
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Please check how the BigM parameter is initialized in the examples from the Pyomo repo and implement it that way. |
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The example to set values for BigM is here. |
gdplib/biofuel/model.py
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| @@ -52,7 +52,7 @@ def build_model(): | |||
| [2] Chen, Q., & Grossmann, I. E. (2019). Effective generalized disjunctive programming models for modular process synthesis. Industrial & Engineering Chemistry Research, 58(15), 5873-5886. https://doi.org/10.1021/acs.iecr.8b04600 | |||
| """ | |||
| m = ConcreteModel('Biofuel processing network') | |||
| m.bigM = Suffix(direction=Suffix.LOCAL, initialize=7000) | |||
| m.bigM = Suffix(direction=Suffix.LOCAL)#, initialize=7000) # Removed the initialize argument | |||
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We need to provide the same initial guess for the Big-M parameter here
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Testing the model by running it. The error has been resolved. |
The bigM has the initialize argument
resulting me to initialize a Suffix with an integer value, which is not iterable.
I tried to resolve the issue BigM: TypeError: 'int' object is not iterable #31 by removing the initialize parameter.
#31