UndefVarError: setparams! not defined

Answered

書廷 林

• April 29, 2022 08:11

My computer is MacBook Pro (13-inch, 2019, Two Thunderbolt 3 ports), MacOS Big Sur

Julia : Version 1.7.2

and the following picture is all the packages I used in Julia

While I using setparams! to set up a Gurobi environment, it occurs some problems in the following picture.

How can I fix this?

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• 

  Simon Bowly

  Gurobi Staff

  • April 29, 2022 09:55
  • Edited

  Hi,

  I don't think "setparams!" is part of the JuMP API any more, although I can't figure in which version it was removed. The appropriate functions are "set_optimizer_attribute" (a general JuMP function) or "Gurobi.GRBsetintparam" (part of Gurobi.jl for interacting directly with the solver API).

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  書廷 林

  • April 29, 2022 10:44

  

  

  

  After change to Gurobi.GRBsetintparam. It occurs another problem in the following picture.

  How could I fix this?

  

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  書廷 林

  • April 30, 2022 06:01

  

  

  Did anyone know where my problem is?

  I need this bad

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• 

  Simon Bowly

  Gurobi Staff

  • May 01, 2022 05:57

  GRBsetintparam is a function, not a macro, so it requires a different syntax. Try the following:

  Gurobi.GRBsetintparam(env, "OutputFlag", 0)

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  書廷 林

  • May 02, 2022 05:22

  

  

  thank you !

  It's actually working!!!

  thanks a lot

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