[image] when I code like this , it leads a error [image]

Hi，very thanks for replying，i think the problem is that the P and M are a keysets，so x[p,:] makes a error, i find a method ,change the code P = keys(data[“plants”]) to P = collect(keys(data[“plants”])), so the problem addressed. [image]

A problem with JuMP Tutorial-linear problem-cannery problem

Specific Domains Optimization (Mathematical)

lawless-m March 31, 2022, 2:59pm 2

Positing screenshots of snippets makes it difficult to help

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A problem with JuMP Tutorial-linear problem-cannery problem

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