Relaxed variable in Java API

Answered

A.Omidi

• May 20, 2019 10:42

Hello support team,

I define an integer variable as following:

			GRBVar[][] start = new GRBVar[mach.length][item.length];
			for (int m = 0; m < mach.length; m++) {
				for (int k = 0; k < item.length; k++) {
					start[m][k] = model.addVar(0, 200, 0, GRB.INTEGER, "start" + m + "." + k);
				}
			}

I need to convert the integer variable to the continuous variable without changing in the initial definition.

Would you say that is there any way to cast it?

 

Regards

Omidi. A

0

• Official comment

  

  Michael Winkler

  Gurobi Staff

  • May 23, 2019 15:32

  Hi Abbas,

   

  you can change the type of a variable with by settings it's variable type attribute. E.g., start[0][0].set(GRB.CharAttr.VType, GRB.CONTINUOUS).

   

  Best,

  Michael
• Official comment

  

  Simranjit Kaur

  Gurobi Staff

  • December 06, 2024 00:58

  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?.
• 

  A.Omidi

  • May 23, 2019 20:14

  

  

  

  Hi Michael,

   

  Thanks for your advice. It works fine.

  Regards

  Abbas

  0

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