Using gurobi package in R

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José Brito

2022年03月09日 21:08

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I'm using the gurobi package in R to 
write an integer linear programming model. 
Before running the model, I need to set some 
variables with initial value. How to do this in R?

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  Simranjit Kaur

  • Gurobi Staff

  2025年11月16日 23:42

  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 try Gurobot, our chatbot interface offering instant, expert-level support.
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  Maliheh Aramon

  • Gurobi Staff

  2022年03月09日 21:47

  Hi José 

  To set a MIP start vector in R, you need to use the start model argument. Assuming \(\mathbf{x}\) represent the MIP start vector and \(\texttt{model}\) is the Gurobi model, you can set the start vector as:

  model$start <- x

  Please note that you need to specify a value for each variable in the vector \(\mathbf{x}\). If there is no initial value for a given variable, you can set its start value to NA, which instructs the Gurobi Optimizer to try to fill in a value for that variable.

  Best regards,

  Maliheh

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