How to add a matrix variable to a matrix/array?

Awaiting user input

Jacob Jin

• September 04, 2021 07:31

I have defined an array and a matrix variable in the concrete model. Then I add the constraint below. However,  "Incompatible dimension" is casted. What's wrong with my code?

y_i = [[3, 2, 1, 1, 2],
[3, 2, 1, 1, 2],
[3, 2, 1, 1, 2]]

## y_ii's dimension: B * 1, i = 1, ..., N

y_ii = locals()
for i in range(N):
    y_ii['y_'+str(i+1)+str(i+1)] = m.addMVar(len(B),
                                   name = 'y_{}{}'.format(i+1, i+1))
for i in range(N):
    ### (1c)
    m.addConstr(y_ii['y_'+str(i+1)+str(i+1)] == y_i[i])

0

• Official comment

  

  Simranjit Kaur

  Gurobi Staff

  • December 06, 2024 00:26

  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?.
• 

  Jaromił Najman

  Gurobi Staff

  • September 06, 2021 11:37

  Hi Jacob,

  Please post a minimal working example reproducing this issue. In particular, in your code snippet the values of \(N\) and \(B\) are missing.

  Best regards,
  Jaromił

  0

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