GurobiError: Unsupported type (<class 'numpy.ndarray'>) for LinExpr addition argument

Juan José Valentín Vírseda

2019年09月18日 14:49

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Hello,

 

I am trying to perform an array multiplication within a constraint, which you may check in the code below:

counter = []

m.addConstr(gb.quicksum(r_up[i] - r_down[i] for i in conv_gens) + gb.quicksum(-v_spill[j] for j in VRE_gens)
+ gb.quicksum(l_sh[d] - demands_data[d]['demand'] for d in loads) + gb.quicksum(np.dot(f[l], A[len(counter)]) for l in from_lines),gb.GRB.EQUAL,0)

counter.append(0)

 

How can I perform array multiplication in gurobi? I can't check any site with relevant info addressing the topic.

 

Thanks in adavance

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  Simranjit Kaur

  • Gurobi Staff

  2025年06月23日 03:23 編集済み

  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?.

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