model.getValues()

回答済み

Fulya Terzi

2020年07月27日 13:47

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Hi,

I need to get the values of decision variables. 

for (Entry<String, Line> lineEntry : optimizationParams.getNetworkElements().getLines().entrySet()) {
       if (LakeId.equals(lineEntry.getValue().getFromLake()) || LakeId.equals(lineEntry.getValue().getToLake())) {
       double[ ]  f = model.getValues(decisionVariables.getFlowVariables().get(lineEntry.getKey()));

}

}

I think there is nothing in Gurobi to get values as in Cplex. I tried  

GRBVar[ ] v = model.getVars(decisionVariables.getFlowVariables().get(lineEntry.getKey()));
double[ ] f = v.X;

but it is NOT Accepted.

The error message is "The method getVars() in the type GRBModel is not applicable for the arguments (GRBVar[])"

I need your advice.

Thank you in advance

 

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  Simranjit Kaur

  • Gurobi Staff

  2025年06月23日 03:09 編集済み

  This post is more than three years old. Some information may not be up to date. For current information, please check the Gurobi Documentation or Knowledge Base. If you need more help, please create a new post in the community forum. Or why not try our AI Gurobot?.
• 

  Eli Towle

  • Gurobi Staff

  2020年07月28日 22:10

  You can use the GRBModel.get() method to retrieve the X variable attributes for an array of GRBVar objects. E.g.:

  double[] vals = model.get(GRB.DoubleAttr.X, model.getVars()); 

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