KeyError (-1,-1)

回答済み

Agustín Chiu

• 2019年04月06日 23:53

Hi,

I am trying to make an L-shaped method and when adding an optimality cut the program throws an "Key (-1,-1)" error, can someone help me? Thanks

0

• 

  Michael Winkler

  Gurobi Staff

  • 2019年04月08日 14:55

  Hi, 

   

  I'm not sure how your sets I and J are defined but my current guess is that they start from 0. Then I'm also not sure how your x (variables) are defined. I guess that trying to access x[i-1, j-1] for i = 0 or j = 0 will result in the key error you are experiencing. 

   

  Best,

  Michael

  0

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